In SQL Server 2008:

• Right click on table
• Go to design
• Select numeric datatype
• Add Name to the new column
• Make Identity Specification to 'YES'

According to Android Sqlite get last insert row id there is another query:

SELECT rowid from your_table_name order by ROWID DESC limit 1

If column is autoincremented in sql server then to see the current autoincremented value, and if you want to edit that value for that column use the following query.

-- to get current value
select ident_current('Table_Name')

-- to update current value
dbcc checkident ('[Table_Name]',reseed,"Your Value")

This is phpMyAdmin method.

$query = "INSERT INTO myTable
         (mtb_i_idautoinc, mtb_s_string1, mtb_s_string2) 
         VALUES
         (NULL, 'Jagodina', '35000')";

hi If you are still not able to make column as AUTO_INCREMENT while creating table. As a work around first create table that is:

create table student( sid integer NOT NULL sname varchar(30), PRIMARY KEY (sid) );

and then explicitly try to alter column bu using the following

alter table student alter column sid set GENERATED BY DEFAULT AS IDENTITY

Or

alter table student alter column sid set GENERATED BY DEFAULT AS IDENTITY (start with 100)

Create an auto incrementing primary key in postgresql, using a custom sequence:

Step 1, create your sequence:

create sequence splog_adfarm_seq
    start 1
    increment 1
    NO MAXVALUE
    CACHE 1;
ALTER TABLE fact_stock_data_detail_seq
OWNER TO pgadmin;

Step 2, create your table

CREATE TABLE splog_adfarm
(
    splog_key    INT unique not null,
    splog_value  VARCHAR(100) not null
);

Step 3, insert into your table

insert into splog_adfarm values (
    nextval('splog_adfarm_seq'), 
    'Is your family tree a directed acyclic graph?'
);

insert into splog_adfarm values (
    nextval('splog_adfarm_seq'), 
    'Will the smart cookies catch the crumb?  Find out now!'
);

Step 4, observe the rows

el@defiant ~ $ psql -U pgadmin -d kurz_prod -c "select * from splog_adfarm"

splog_key |                            splog_value                             
----------+--------------------------------------------------------------------
        1 | Is your family tree a directed acyclic graph?
        2 | Will the smart cookies catch the crumb?  Find out now!
(3 rows)

The two rows have keys that start at 1 and are incremented by 1, as defined by the sequence.

Bonus Elite ProTip:

Programmers hate typing, and typing out the nextval('splog_adfarm_seq') is annoying. You can type DEFAULT for that parameter instead, like this:

insert into splog_adfarm values (
    DEFAULT, 
    'Sufficient intelligence to outwit a thimble.'
);

For the above to work, you have to define a default value for that key column on splog_adfarm table. Which is prettier.

you can select the ids like so:

set @rank = 0;
select id, @rank:=@rank+1 from tbl order by id

the result is a list of ids, and their positions in the sequence.

you can also reset the ids like so:

set @rank = 0;
update tbl a join (select id, @rank:=@rank+1 as rank from tbl order by id) b
  on a.id = b.id set a.id = b.rank;

you could also just print out the first unused id like so:

select min(id) as next_id from ((select a.id from (select 1 as id) a
  left join tbl b on a.id = b.id where b.id is null) union
  (select min(a.id) + 1 as id from tbl a left join tbl b on a.id+1 = b.id
  where b.id is null)) c;

after each insert, you can reset the auto_increment:

alter table tbl auto_increment = 16

or explicitly set the id value when doing the insert:

insert into tbl values (16, 'something');

typically this isn't necessary, you have count(*) and the ability to create a ranking number in your result sets. a typical ranking might be:

set @rank = 0;
select a.name, a.amount, b.rank from cust a,
  (select amount, @rank:=@rank+1 as rank from cust order by amount desc) b
  where a.amount = b.amount

customers ranked by amount spent.

Several answers recommend using a statement something like this:

DBCC CHECKIDENT (mytable, RESEED, 0)

But the OP said "deleted some records", which may not be all of them, so a value of 0 is not always the right one. Another answer suggested automatically finding the maximum current value and reseeding to that one, but that runs into trouble if there are no records in the table, and thus max() will return NULL. A comment suggested using simply

DBCC CHECKIDENT (mytable)

to reset the value, but another comment correctly stated that this only increases the value to the maximum already in the table; this will not reduce the value if it is already higher than the maximum in the table, which is what the OP wanted to do.

A better solution combines these ideas. The first CHECKIDENT resets the value to 0, and the second resets it to the highest value currently in the table, in case there are records in the table:

DBCC CHECKIDENT (mytable, RESEED, 0)
DBCC CHECKIDENT (mytable)

As multiple comments have indicated, make sure there are no foreign keys in other tables pointing to the deleted records. Otherwise those foreign keys will point at records you create after reseeding the table, which is almost certainly not what you had in mind.

Here what you are looking for !!!

select LAST_INSERT_ID()

This is the best alternative of SCOPE_IDENTITY() function being used in SQL Server.

You also need to keep in mind that this will only work if Last_INSERT_ID() is fired following by your Insert query. That is the query returns the id inserted in the schema. You can not get specific table's last inserted id.

For more details please go through the link The equivalent of SQLServer function SCOPE_IDENTITY() in mySQL?

You can have an auto-Incrementing column that is not the PRIMARY KEY, as long as there is an index (key) on it:

CREATE TABLE members ( 
  id int(11)  UNSIGNED NOT NULL AUTO_INCREMENT,
  memberid VARCHAR( 30 ) NOT NULL , 
  `time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP , 
  firstname VARCHAR( 50 ) NULL , 
  lastname VARCHAR( 50 ) NULL , 
  PRIMARY KEY (memberid) ,
  KEY (id)                          --- or:    UNIQUE KEY (id)
) ENGINE = MYISAM; 

Create a table with a normal numeric auto_increment ID, but either define it with ZEROFILL, or use LPAD to add zeroes when selecting. Then CONCAT the values to get your intended behavior. Example #1:

create table so (
 id int(3) unsigned zerofill not null auto_increment primary key,
 name varchar(30) not null
);

insert into so set name = 'John';
insert into so set name = 'Mark';

select concat('LHPL', id) as id, name from so;
+---------+------+
| id      | name |
+---------+------+
| LHPL001 | John |
| LHPL002 | Mark |
+---------+------+

Example #2:

create table so (
 id int unsigned not null auto_increment primary key,
 name varchar(30) not null
);

insert into so set name = 'John';
insert into so set name = 'Mark';

select concat('LHPL', LPAD(id, 3, 0)) as id, name from so;
+---------+------+
| id      | name |
+---------+------+
| LHPL001 | John |
| LHPL002 | Mark |
+---------+------+

I googled and found this question, but the answer I am really looking for fulfils two criteria:

1. using purely MySQL queries
2. reset an existing table auto-increment to max(id) + 1

Since I couldn't find exactly what I want here, I have cobbled the answer from various answers and sharing it here.

Few things to note:

1. the table in question is InnoDB
2. the table uses the field id with type as int as primary key
3. the only way to do this purely in MySQL is to use stored procedure
4. my images below are using SequelPro as the GUI. You should be able to adapt it based on your preferred MySQL editor
5. I have tested this on MySQL Ver 14.14 Distrib 5.5.61, for debian-linux-gnu

Step 1: Create Stored Procedure

create a stored procedure like this:

DELIMITER //
CREATE PROCEDURE reset_autoincrement(IN tablename varchar(200))
BEGIN

      SET @get_next_inc = CONCAT('SELECT @next_inc := max(id) + 1 FROM ',tablename,';');
      PREPARE stmt FROM @get_next_inc; 
      EXECUTE stmt; 
      SELECT @next_inc AS result;
      DEALLOCATE PREPARE stmt; 

      set @alter_statement = concat('ALTER TABLE ', tablename, ' AUTO_INCREMENT = ', @next_inc, ';');
      PREPARE stmt FROM @alter_statement;
      EXECUTE stmt;
      DEALLOCATE PREPARE stmt;
END //
DELIMITER ;

Then run it.

Before run, it looks like this when you look under Stored Procedures in your database.

When I run, I simply select the stored procedure and press Run Selection

Note: the delimiters part are crucial. Hence if you copy and paste from the top selected answers in this question, they tend not to work for this reason.

After I run, I should see the stored procedure

If you need to change the stored procedure, you need to delete the stored procedure, then select to run again.

Step 2: Call the stored procedure

This time you can simply use normal MySQL queries.

call reset_autoincrement('products');

Originally from my own SQL queries notes in https://simkimsia.com/library/sql-queries/#mysql-reset-autoinc and adapted for StackOverflow

MySQL - Setup an auto-incrementing primary key that starts at 1001:

Step 1, create your table:

create table penguins(
  my_id       int(16) auto_increment, 
  skipper     varchar(4000),
  PRIMARY KEY (my_id)
)

Step 2, set the start number for auto increment primary key:

ALTER TABLE penguins AUTO_INCREMENT=1001;

Step 3, insert some rows:

insert into penguins (skipper) values("We need more power!");
insert into penguins (skipper) values("Time to fire up");
insert into penguins (skipper) values("kowalski's nuclear reactor.");

Step 4, interpret the output:

select * from penguins

prints:

'1001', 'We need more power!'
'1002', 'Time to fire up'
'1003', 'kowalski\'s nuclear reactor'

The following command does this automatically for you: This will also delete all the data in the table. So be careful.

TRUNCATE TABLE someTable RESTART IDENTITY;

As long as you have unique integers (or some unique value) in the current PK, you could create a new table, and insert into it with IDENTITY INSERT ON. Then drop the old table, and rename the new table.

Don't forget to recreate any indexes.

First Record should be add

"_id" = 1    in your db

$database = "demo";
$collections ="democollaction";
echo getnextid($database,$collections);

function getnextid($database,$collections){

     $m = new MongoClient();
    $db = $m->selectDB($database);
    $cursor = $collection->find()->sort(array("_id" => -1))->limit(1);
    $array = iterator_to_array($cursor);

    foreach($array as $value){



        return $value["_id"] + 1;

    }
 }

The auto_increment property only works for numeric columns (integer and floating point), not char columns:

CREATE TABLE discussion_topics (
    topic_id INT NOT NULL AUTO_INCREMENT,
    project_id char(36) NOT NULL,
    topic_subject VARCHAR(255) NOT NULL,
    topic_content TEXT default NULL,
    date_created DATETIME NOT NULL,
    date_last_post DATETIME NOT NULL,
    created_by_user_id char(36) NOT NULL,
    last_post_user_id char(36) NOT NULL,
    posts_count char(36) default NULL,
    PRIMARY KEY (topic_id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1;

DECLARE @id INT 
SET @id = 0 
UPDATE cartemp
SET @id = CarmasterID = @id + 1 
GO

I managed to do this with the following code:

ALTER TABLE `table_name`
CHANGE COLUMN `colum_name` `colum_name` INT(11) NOT NULL AUTO_INCREMENT FIRST;

This is the only way I could make a column auto increment.

INT(11) shows that the maximum int length is 11, you can skip it if you want.

For PostgreSQL you have to use SERIAL instead of auto_increment.

ALTER TABLE your_table_name ADD COLUMN id SERIAL NOT NULL PRIMARY KEY

ALTER TABLE test1 ADD COLUMN id SERIAL PRIMARY KEY;

This is all you need to:

1. Add the id column
2. Populate it with a sequence from 1 to count(*).
3. Set it as primary key / not null.

Credit is given to @resnyanskiy who gave this answer in a comment.

Just add the column names, yes you can use Null instead but is is a very bad idea to not use column names in any insert, ever.

It is ugly and performs badly, but technically this works on any table with at least one unique field AND works in SQL 2000.

SELECT (SELECT COUNT(*) FROM myTable T1 WHERE T1.UniqueField<=T2.UniqueField) as RowNum, T2.OtherField
FROM myTable T2
ORDER By T2.UniqueField

Note: If you use this approach and add a WHERE clause to the outer SELECT, you have to added it to the inner SELECT also if you want the numbers to be continuous.

I needed to get the last id way after inserting it, so

$lastid = $wpdb->insert_id;

Was not an option.

Did the follow:

global $wpdb;
$id = $wpdb->get_var( 'SELECT id FROM ' . $wpdb->prefix . 'table' . ' ORDER BY id DESC LIMIT 1');

Found a way of setting auto increment in netbeans 8.0.1 here on StackoOverflow Screenshot below:

You can use any other integer data type, such as smallint.

Example :

CREATE SEQUENCE user_id_seq;
CREATE TABLE user (
    user_id smallint NOT NULL DEFAULT nextval('user_id_seq')
);
ALTER SEQUENCE user_id_seq OWNED BY user.user_id;

Better to use your own data type, rather than user serial data type.

There is no such thing as "auto_increment" or "identity" columns in Oracle as of Oracle 11g. However, you can model it easily with a sequence and a trigger:

Table definition:

CREATE TABLE departments (
  ID           NUMBER(10)    NOT NULL,
  DESCRIPTION  VARCHAR2(50)  NOT NULL);

ALTER TABLE departments ADD (
  CONSTRAINT dept_pk PRIMARY KEY (ID));

CREATE SEQUENCE dept_seq START WITH 1;

Trigger definition:

CREATE OR REPLACE TRIGGER dept_bir 
BEFORE INSERT ON departments 
FOR EACH ROW

BEGIN
  SELECT dept_seq.NEXTVAL
  INTO   :new.id
  FROM   dual;
END;
/

UPDATE:

IDENTITY column is now available on Oracle 12c:

create table t1 (
    c1 NUMBER GENERATED by default on null as IDENTITY,
    c2 VARCHAR2(10)
    );

or specify starting and increment values, also preventing any insert into the identity column (GENERATED ALWAYS) (again, Oracle 12c+ only)

create table t1 (
    c1 NUMBER GENERATED ALWAYS as IDENTITY(START with 1 INCREMENT by 1),
    c2 VARCHAR2(10)
    );

Alternatively, Oracle 12 also allows to use a sequence as a default value:

CREATE SEQUENCE dept_seq START WITH 1;

CREATE TABLE departments (
  ID           NUMBER(10)    DEFAULT dept_seq.nextval NOT NULL,
  DESCRIPTION  VARCHAR2(50)  NOT NULL);

ALTER TABLE departments ADD (
  CONSTRAINT dept_pk PRIMARY KEY (ID));

FYI

Using netbeans New Entity Classes from Database with a mysql *auto_increment* column, creates you an attribute with the following annotations:

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Basic(optional = false)
@Column(name = "id")
@NotNull
private Integer id;

This was getting me the same an error saying the column must not be null, so i simply removed the @NotNull anotation leaving the attribute null, and it works!

If you want to do this via the designer you can do it by following the instructions here "Save changes is not permitted" when changing an existing column to be nullable

CAST(QuantityLevel AS NUMERIC(18,2))

Add the right lines this way and and the horizontal borders using HR or border-bottom or .col-right-line:after. Don't forget media queries to get rid of the lines on small devices.

.col-right-line:before {
  position: absolute;
  content: " ";
  top: 0;
  right: 0;
  height: 100%;
  width: 1px;
  background-color: @color-neutral;
}

Are you sure you are on the local an-other-branch when you merge?

git fetch origin an-other-branch
git checkout an-other-branch
git merge origin/an-other-branch

The other explanation:

all the changes from the branch you’re trying to merge have already been merged to the branch you’re currently on.
More specifically it means that the branch you’re trying to merge is a parent of your current branch

if you're ahead of the remote repo by one commit, it's the remote repo that's out of date, not you.

But in your case, if git pull works, that just means you are not on the right branch.

You don't need the jsp:useBean to set the model if you already have a controller which prepared the model.

Just access it plain by EL:

<p>${Questions.questionPaperID}</p>
<p>${Questions.question}</p>

or by JSTL <c:out> tag if you'd like to HTML-escape the values or when you're still working on legacy Servlet 2.3 containers or older when EL wasn't supported in template text yet:

<p><c:out value="${Questions.questionPaperID}" /></p>
<p><c:out value="${Questions.question}" /></p>

See also:

• Our Servlets wiki page

Unrelated to the problem, the normal practice is by the way to start attribute name with a lowercase, like you do with normal variable names.

session.setAttribute("questions", questions);

and alter EL accordingly to use ${questions}.

Also note that you don't have any JSTL tag in your code. It's all plain JSP.

To elaborate slightly on @erikkallen's excellent answer, here is a function that allows all keyboard-based input types, including those introduced in HTML5:

$(document).unbind('keydown').bind('keydown', function (event) {
    var doPrevent = false;
    var INPUTTYPES = [
        "text", "password", "file", "date", "datetime", "datetime-local",
        "month", "week", "time", "email", "number", "range", "search", "tel",
        "url"];
    var TEXTRE = new RegExp("^" + INPUTTYPES.join("|") + "$", "i");
    if (event.keyCode === 8) {
        var d = event.srcElement || event.target;
        if ((d.tagName.toUpperCase() === 'INPUT' && d.type.match(TEXTRE)) ||
             d.tagName.toUpperCase() === 'TEXTAREA') {
            doPrevent = d.readOnly || d.disabled;
        } else {
            doPrevent = true;
        }
    }
    if (doPrevent) {
        event.preventDefault();
    }
});

tabs = {}

def new_tab():
    global browser
    hpos = browser.window_handles.index(browser.current_window_handle)
    browser.execute_script("window.open('');")
    browser.switch_to.window(browser.window_handles[hpos + 1])
    return(browser.current_window_handle)
    
def switch_tab(name):
    global tabs
    global browser
    if not name in tabs.keys():
        tabs[name] = {'window_handle': new_tab(), 'url': url+name}
        browser.get(tabs[name]['url'])
    else:
        browser.switch_to.window(tabs[name]['window_handle'])

Simple and with little changes. And also hide load more when entire list is loaded.

jsFiddle here.

$(document).ready(function () {
    // Load the first 3 list items from another HTML file
    //$('#myList').load('externalList.html li:lt(3)');
    $('#myList li:lt(3)').show();
    $('#showLess').hide();
    var items =  25;
    var shown =  3;
    $('#loadMore').click(function () {
        $('#showLess').show();
        shown = $('#myList li:visible').size()+5;
        if(shown< items) {$('#myList li:lt('+shown+')').show();}
        else {$('#myList li:lt('+items+')').show();
             $('#loadMore').hide();
             }
    });
    $('#showLess').click(function () {
        $('#myList li').not(':lt(3)').hide();
    });
});

You can just ask for cancellation but not really terminate it. See this answer.

Sometimes you have to use @import as opposed to inline . If you are working on a complex application that has 32 or more css files and you must support IE9 there is no choice. IE9 ignores any css file after the first 31 and this includes and inline css. However, each sheet can import 31 others.

How about "TIMESTAMPDIFF":

SELECT TIMESTAMPDIFF(SECOND,'2009-05-18','2009-07-29') from `post_statistics`

https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_timestampdiff

You could add android:textAllCaps="false" to the button.

The button text might be transformed to uppercase by your app's theme that applies to all buttons. Check themes / styles files for setting the attribute android:textAllCaps.

As answered above, the right answer is to compile everything with VS2015, but for interest the following is my analysis of the problem.

This symbol does not appear to be defined in any static library provided by Microsoft as part of VS2015, which is rather peculiar since all others are. To discover why, we need to look at the declaration of that function and, more importantly, how it's used.

Here's a snippet from the Visual Studio 2008 headers:

_CRTIMP FILE * __cdecl __iob_func(void);
#define stdin (&__iob_func()[0])
#define stdout (&__iob_func()[1])
#define stderr (&__iob_func()[2])

So we can see that the job of the function is to return the start of an array of FILE objects (not handles, the "FILE *" is the handle, FILE is the underlying opaque data structure storing the important state goodies). The users of this function are the three macros stdin, stdout and stderr which are used for various fscanf, fprintf style calls.

Now let's take a look at how Visual Studio 2015 defines the same things:

_ACRTIMP_ALT FILE* __cdecl __acrt_iob_func(unsigned);
#define stdin (__acrt_iob_func(0))
#define stdout (__acrt_iob_func(1))
#define stderr (__acrt_iob_func(2))

So the approach has changed for the replacement function to now return the file handle rather than the address of the array of file objects, and the macros have changed to simply call the function passing in an identifying number.

So why can't they/we provide a compatible API? There are two key rules which Microsoft can't contravene in terms of their original implementation via __iob_func:

1. There must be an array of three FILE structures which can be indexed in the same manner as before.
2. The structural layout of FILE cannot change.

Any change in either of the above would mean existing compiled code linked against that would go badly wrong if that API is called.

Let's take a look at how FILE was/is defined.

First the VS2008 FILE definition:

struct _iobuf {
        char *_ptr;
        int   _cnt;
        char *_base;
        int   _flag;
        int   _file;
        int   _charbuf;
        int   _bufsiz;
        char *_tmpfname;
        };
typedef struct _iobuf FILE;

And now the VS2015 FILE definition:

typedef struct _iobuf
{
    void* _Placeholder;
} FILE;

So there is the crux of it: the structure has changed shape. Existing compiled code referring to __iob_func relies upon the fact that the data returned is both an array that can be indexed and that in that array the elements are the same distance apart.

The possible solutions mentioned in the answers above along these lines would not work (if called) for a few reasons:

FILE _iob[] = {*stdin, *stdout, *stderr};

extern "C" FILE * __cdecl __iob_func(void)
{
    return _iob;
}

The FILE array _iob would be compiled with VS2015 and so it would be laid out as a block of structures containing a void*. Assuming 32-bit alignment, these elements would be 4 bytes apart. So _iob[0] is at offset 0, _iob[1] is at offset 4 and _iob[2] is at offset 8. The calling code will instead expect FILE to be much longer, aligned at 32 bytes on my system, and so it will take the address of the returned array and add 0 bytes to get to element zero (that one is okay), but for _iob[1] it will deduce that it needs to add 32 bytes and for _iob[2] it will deduce that it needs to add 64-bytes (because that's how it looked in the VS2008 headers). And indeed the disassembled code for VS2008 demonstrates this.

A secondary issue with the above solution is that it copies the content of the FILE structure (*stdin), not the FILE * handle. So any VS2008 code would be looking at a different underlying structure to VS2015. This might work if the structure only contained pointers, but that's a big risk. In any case the first issue renders this irrelevant.

The only hack I've been able to dream up is one in which __iob_func walks the call stack to work out which actual file handle they are looking for (based on the offset added to the returned address) and returns a computed value such that it gives the right answer. This is every bit as insane as it sounds, but the prototype for x86 only (not x64) is listed below for your amusement. It worked okay in my experiments, but your mileage may vary - not recommended for production use!

#include <windows.h>
#include <stdio.h>
#include <dbghelp.h>

/* #define LOG */

#if defined(_M_IX86)

#define GET_CURRENT_CONTEXT(c, contextFlags) \
  do { \
    c.ContextFlags = contextFlags; \
    __asm    call x \
    __asm x: pop eax \
    __asm    mov c.Eip, eax \
    __asm    mov c.Ebp, ebp \
    __asm    mov c.Esp, esp \
  } while(0);

#else

/* This should work for 64-bit apps, but doesn't */
#define GET_CURRENT_CONTEXT(c, contextFlags) \
  do { \
    c.ContextFlags = contextFlags; \
    RtlCaptureContext(&c); \
} while(0);

#endif

FILE * __cdecl __iob_func(void)
{
    CONTEXT c = { 0 };
    STACKFRAME64 s = { 0 };
    DWORD imageType;
    HANDLE hThread = GetCurrentThread();
    HANDLE hProcess = GetCurrentProcess();

    GET_CURRENT_CONTEXT(c, CONTEXT_FULL);

#ifdef _M_IX86
    imageType = IMAGE_FILE_MACHINE_I386;
    s.AddrPC.Offset = c.Eip;
    s.AddrPC.Mode = AddrModeFlat;
    s.AddrFrame.Offset = c.Ebp;
    s.AddrFrame.Mode = AddrModeFlat;
    s.AddrStack.Offset = c.Esp;
    s.AddrStack.Mode = AddrModeFlat;
#elif _M_X64
    imageType = IMAGE_FILE_MACHINE_AMD64;
    s.AddrPC.Offset = c.Rip;
    s.AddrPC.Mode = AddrModeFlat;
    s.AddrFrame.Offset = c.Rsp;
    s.AddrFrame.Mode = AddrModeFlat;
    s.AddrStack.Offset = c.Rsp;
    s.AddrStack.Mode = AddrModeFlat;
#elif _M_IA64
    imageType = IMAGE_FILE_MACHINE_IA64;
    s.AddrPC.Offset = c.StIIP;
    s.AddrPC.Mode = AddrModeFlat;
    s.AddrFrame.Offset = c.IntSp;
    s.AddrFrame.Mode = AddrModeFlat;
    s.AddrBStore.Offset = c.RsBSP;
    s.AddrBStore.Mode = AddrModeFlat;
    s.AddrStack.Offset = c.IntSp;
    s.AddrStack.Mode = AddrModeFlat;
#else
#error "Platform not supported!"
#endif

    if (!StackWalk64(imageType, hProcess, hThread, &s, &c, NULL, SymFunctionTableAccess64, SymGetModuleBase64, NULL))
    {
#ifdef LOG
        printf("Error: 0x%08X (Address: %p)\n", GetLastError(), (LPVOID)s.AddrPC.Offset);
#endif
        return NULL;
    }

    if (s.AddrReturn.Offset == 0)
    {
        return NULL;
    }

    {
        unsigned char const * assembly = (unsigned char const *)(s.AddrReturn.Offset);
#ifdef LOG
        printf("Code bytes proceeding call to __iob_func: %p: %02X,%02X,%02X\n", assembly, *assembly, *(assembly + 1), *(assembly + 2));
#endif
        if (*assembly == 0x83 && *(assembly + 1) == 0xC0 && (*(assembly + 2) == 0x20 || *(assembly + 2) == 0x40))
        {
            if (*(assembly + 2) == 32)
            {
                return (FILE*)((unsigned char *)stdout - 32);
            }
            if (*(assembly + 2) == 64)
            {
                return (FILE*)((unsigned char *)stderr - 64);
            }

        }
        else
        {
            return stdin;
        }
    }
    return NULL;
}

ncftp -u <user> -p <pass> <server>
ncftp> mget directory

I had this situation before my solution was to override the pre_save() method of the target field class it will be called only if the field has been changed
useful with FileField example:

class PDFField(FileField):
    def pre_save(self, model_instance, add):
        # do some operations on your file 
        # if and only if you have changed the filefield

disadvantage:
not useful if you want to do any (post_save) operation like using the created object in some job (if certain field has changed)

I found a solution for Chrome with CSS this following selector without bypassing the native verification form which could be very useful.

form input::-webkit-validation-bubble-message, 
form select::-webkit-validation-bubble-message,
form textarea::-webkit-validation-bubble-message {
    display:none;
} 

By this way, you can also customise your message...

I got the solution on this page : http://trac.webkit.org/wiki/Styling%20Form%20Controls

function sortArgs(){ return [].slice.call(arguments).sort() }

// Returns the arguments object itself
function sortArgs(){ return [].sort.call(arguments) }

Some array methods are intentionally made not to require the target object to be an actual array. They only require the target to have a property named length and indices (which must be zero or larger integers).

[].sort.call({0:1, 1:0, length:2}) // => ({0:0, 1:1, length:2})

I prefer foxy's answer because we should never use javascript when existing css properties are made for the job.

Don't forget to add display: block ; in .menuItem, so height and width are taken into account.

edit : for better script/look&feel decoupling, if you ever need to change style through jQuery I'd define an additional css class and use $(...).addClass("myclass") and $(...).removeClass("myclass")

For anyone who wants to ignore files locally in a submodule:

Edit my-parent-repo/.git/modules/my-submodule/info/exclude with the same format as a .gitignore file.

Just try this :

ArrayList<SomeClass> arrayList;

 public SomeConstructor(List<SomeClass> listData) {
        arrayList.addAll(listData);
}

Centos 7 php install comes with the ModSecurity package installed and enabled which prevents web access to phpMyAdmin. At the end of phpMyAdmin.conf, you should find

# This configuration prevents mod_security at phpMyAdmin directories from
# filtering SQL etc.  This may break your mod_security implementation.
#
#<IfModule mod_security.c>
#    <Directory /usr/share/phpMyAdmin/>
#        SecRuleInheritance Off
#    </Directory>
#</IfModule>

which gives you the answer to the problem. By adding

    SecRuleEngine Off

in the block "Directory /usr/share/phpMyAdmin/", you can solve the 'denied access' to phpmyadmin, but you may create security issues.

You can also have each tab run a set command.

gnome-terminal --tab -e "tail -f somefile" --tab -e "some_other_command"

Alex Answer is pretty neat but when using context rotate it can be hard to trace x,y coordinates, so I have made a Demo showing how to keep track of that.

Basically I am using this function & giving it the angle & the amount of distance traveled in that angel before drawing object.

function rotCor(angle, length){
    var cos = Math.cos(angle);
    var sin = Math.sin(angle);

    var newx = length*cos;
    var newy = length*sin;

    return {
        x : newx,
        y : newy
    };
}

git pull origin master

this will sync your master to the central repo and if new branches are pushed to the central repo it will also update your clone copy.

Try using IgnoreDataMember property

public class Foo
    {
        [IgnoreDataMember]
        public int Id { get; set; }
        public string Name { get; set; }
    }

Using the -n /usr/local/bin flag does work, BUT I had to come back to this page every time I wanted to update a package again. So I figured out a permanent fix for this.

For those interested in fixing this permanently:

Create a ~/.gemrc file

vim .gemrc

With the following content:

:gemdir:
   - ~/.gem/ruby
install: -n /usr/local/bin

Now you can run your command normally without the -n flag.

Enjoy!

You should put your processing into the class constructor or an OnInit hook method.

You could use commons lang's ArrayUtils.

array = ArrayUtils.removeElement(array, element)

commons.apache.org library:Javadocs

MYSQL: To get column values as one comma separated value use GROUP_CONCAT( ) function as

GROUP_CONCAT(  `column_name` )

for example

SELECT GROUP_CONCAT(  `column_name` ) 
FROM  `table_name` 
WHERE 1 
LIMIT 0 , 30

Try this:

<?php

 # Init the MySQL Connection
  if( !( $db = mysql_connect( 'localhost' , 'root' , '' ) ) )
    die( 'Failed to connect to MySQL Database Server - #'.mysql_errno().': '.mysql_error();
  if( !mysql_select_db( 'ram' ) )
    die( 'Connected to Server, but Failed to Connect to Database - #'.mysql_errno().': '.mysql_error();

 # Prepare the INSERT Query
  $insertTPL = 'INSERT INTO `name` VALUES( "%s" , "%s" , "%s" , "%s" )';
  $insertSQL = sprintf( $insertTPL ,
                 mysql_real_escape_string( $name ) ,
                 mysql_real_escape_string( $add1 ) ,
                 mysql_real_escape_string( $add2 ) ,
                 mysql_real_escape_string( $mail ) );
 # Execute the INSERT Query
  if( !( $insertRes = mysql_query( $insertSQL ) ) ){
    echo '<p>Insert of Row into Database Failed - #'.mysql_errno().': '.mysql_error().'</p>';
  }else{
    echo '<p>Person\'s Information Inserted</p>'
  }

 # Prepare the SELECT Query
  $selectSQL = 'SELECT * FROM `names`';
 # Execute the SELECT Query
  if( !( $selectRes = mysql_query( $selectSQL ) ) ){
    echo 'Retrieval of data from Database Failed - #'.mysql_errno().': '.mysql_error();
  }else{
    ?>
<table border="2">
  <thead>
    <tr>
      <th>Name</th>
      <th>Address Line 1</th>
      <th>Address Line 2</th>
      <th>Email Id</th>
    </tr>
  </thead>
  <tbody>
    <?php
      if( mysql_num_rows( $selectRes )==0 ){
        echo '<tr><td colspan="4">No Rows Returned</td></tr>';
      }else{
        while( $row = mysql_fetch_assoc( $selectRes ) ){
          echo "<tr><td>{$row['name']}</td><td>{$row['addr1']}</td><td>{$row['addr2']}</td><td>{$row['mail']}</td></tr>\n";
        }
      }
    ?>
  </tbody>
</table>
    <?php
  }

?>

Notes, Cautions and Caveats

Your initial solution did not show any obvious santisation of the values before passing them into the Database. This is how SQL Injection attacks (or even un-intentional errors being passed through SQL) occur. Don't do it!

Your database does not seem to have a Primary Key. Whilst these are not, technically, necessary in all usage, they are a good practice, and make for a much more reliable way of referring to a specific row in a table, whether for adding related tables, or for making changes within that table.

You need to check every action, at every stage, for errors. Most PHP functions are nice enough to have a response they will return under an error condition. It is your job to check for those conditions as you go - never assume that PHP will do what you expect, how you expect, and in the order you expect. This is how accident happen...

My provided code above contains alot of points where, if an error has occured, a message will be returned. Try it, see if any error messages are reported, look at the Error Message, and, if applicable, the Error Code returned and do some research.

Good luck.

The accepted (and correct) answer says that "you can include this [Constants.h] file... in the pre-compiled header for the project."

As a novice, I had difficulty doing this without further explanation -- here's how: In your YourAppNameHere-Prefix.pch file (this is the default name for the precompiled header in Xcode), import your Constants.h inside the #ifdef __OBJC__ block.

#ifdef __OBJC__
  #import <UIKit/UIKit.h>
  #import <Foundation/Foundation.h>
  #import "Constants.h"
#endif

Also note that the Constants.h and Constants.m files should contain absolutely nothing else in them except what is described in the accepted answer. (No interface or implementation).

git pull do below operation.

i. git fetch

ii. git merge

To undo pull do any operation:

i. git reset --hard --- its revert all local change also

or

ii. git reset --hard master@{5.days.ago} (like 10.minutes.ago, 1.hours.ago, 1.days.ago ..) to get local changes.

or

iii. git reset --hard commitid

Improvement:

Next time use git pull --rebase instead of git pull.. its sync server change by doing ( fetch & merge).

very simple one line solution:

<body onLoad="document.getElementById('myinputbox').focus();">

From Eclipse

• Go to Help
• Eclipse Marketplace
• Search for m2e or maven integration for eclipse
• click on Install against - 'Maven Integration for Eclipse (Juno and newer) 1.4'
• Restart and Enjoy!!!

You can use the following:

import json

 with open('<yourFile>.json', 'r') as JSON:
       json_dict = json.load(JSON)

 # Now you can use it like dictionary
 # For example:

 print(json_dict["username"])

My problem was in add some library from tomcat to eclipse class path i just going to eclipse click right to project and going to debug configuration -> classpath -> Add External JARs add all jars files from apache-tomcat-7.0.35\bin this was my problem and it's worked for me .

perhaps this is what you're looking for: https://github.com/android/platform_frameworks_base/blob/master/core/res/res/values/colors.xml

Confirmed my fix:

In your web.config file you should configure it to look as such:

<system.serviceModel >
    <serviceHostingEnvironment configSource=".\Configurations\ServiceHosting.config" />
    ...

Then, build a folder structure that looks like this:

/web.config
/Configurations/ServiceHosting.config
/Configurations/Deploy/ServiceHosting.config

The base serviceHosting.config should look like this:

<?xml version="1.0"?>
<serviceHostingEnvironment aspNetCompatibilityEnabled="true">
    <baseAddressPrefixFilters>
    </baseAddressPrefixFilters>
</serviceHostingEnvironment>

while the one in /Deploy looks like this:

<serviceHostingEnvironment aspNetCompatibilityEnabled="true">
    <baseAddressPrefixFilters>
        <add prefix="http://myappname.web707.discountasp.net"/>
    </baseAddressPrefixFilters>
</serviceHostingEnvironment>

Beyond this, you need to add a manual or automated deployment step to copy the file from /Deploy overtop the one in /Configurations. This works incredibly well for service address and connection strings, and saves effort doing other workarounds.

If you don't like this approach (which scales well to farms, but is weaker on single machine), you might consider adding a web.config file a level up from the service deployment on the host's machine and put the serviceHostingEnvironment node there. It should cascade for you.

I have merged some solutions to make a complete util for picking an image from Gallery or Camera. These are the features of ImagePicker util gist (also in a Github lib):

• Merged intents for Gallery and Camera resquests.
• Resize selected big images (e.g.: 2500 x 1600)
• Rotate image if necesary

Screenshot:

Edit: Here is a fragment of code to get a merged Intent for Gallery and Camera apps together. You can see the full code at ImagePicker util gist (also in a Github lib):

public static Intent getPickImageIntent(Context context) {
    Intent chooserIntent = null;

    List<Intent> intentList = new ArrayList<>();

    Intent pickIntent = new Intent(Intent.ACTION_PICK,
            android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    takePhotoIntent.putExtra("return-data", true);
    takePhotoIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(getTempFile(context)));
    intentList = addIntentsToList(context, intentList, pickIntent);
    intentList = addIntentsToList(context, intentList, takePhotoIntent);

    if (intentList.size() > 0) {
        chooserIntent = Intent.createChooser(intentList.remove(intentList.size() - 1),
                context.getString(R.string.pick_image_intent_text));
        chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentList.toArray(new Parcelable[]{}));
    }

    return chooserIntent;
}

private static List<Intent> addIntentsToList(Context context, List<Intent> list, Intent intent) {
    List<ResolveInfo> resInfo = context.getPackageManager().queryIntentActivities(intent, 0);
    for (ResolveInfo resolveInfo : resInfo) {
        String packageName = resolveInfo.activityInfo.packageName;
        Intent targetedIntent = new Intent(intent);
        targetedIntent.setPackage(packageName);
        list.add(targetedIntent);
    }
    return list;
}

Conda can also be used as package manager. It can be installed from Anaconda.

Alternatively, a free minimal installer is Miniconda.

According to the latest documentation about PyMongo titled Insert a Document (insert is deprecated) and following defensive approach, you should insert and update as follows:

result = mycollection.insert_one(post)
post = mycollection.find_one({'_id': result.inserted_id})

if post is not None:
    post['newfield'] = "abc"
    mycollection.save(post)

Late but this is what I use

 public static string ConvertDataTableToString(DataTable dataTable)
    {
        var output = new StringBuilder();

        var columnsWidths = new int[dataTable.Columns.Count];

        // Get column widths
        foreach (DataRow row in dataTable.Rows)
        {
           for(int i = 0; i < dataTable.Columns.Count; i++)
           {
               var length = row[i].ToString().Length;
               if (columnsWidths[i] < length)
                   columnsWidths[i] = length;
           }     
        }

        // Get Column Titles
        for (int i = 0; i < dataTable.Columns.Count; i++)
        {
            var length = dataTable.Columns[i].ColumnName.Length;
               if (columnsWidths[i] < length)
                   columnsWidths[i] = length;
        }

        // Write Column titles
        for (int i = 0; i < dataTable.Columns.Count; i++)
        {
            var text = dataTable.Columns[i].ColumnName;
            output.Append("|" + PadCenter(text, columnsWidths[i] + 2));
        }
        output.Append("|\n" + new string('=', output.Length) + "\n");

        // Write Rows
        foreach (DataRow row in dataTable.Rows)
        {
            for (int i = 0; i < dataTable.Columns.Count; i++)
            {
                var text = row[i].ToString();
                output.Append("|" + PadCenter(text,columnsWidths[i] + 2));
            }
            output.Append("|\n");
        }
        return output.ToString();
    }

    private static string PadCenter(string text, int maxLength)
    {
        int diff = maxLength - text.Length;
        return new string(' ', diff/2) + text + new string(' ', (int) (diff / 2.0 + 0.5));

    } 

another solution using awk script:

last 1 char:

echo $str | awk '{print substr($0,length,1)}'

last 5 chars:

echo $str | awk '{print substr($0,length-5,5)}'

If you want just a simple reader without sections and any other dlls here is simple solution:

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Tool
{
    public class Config
    {
        Dictionary <string, string> values;
        public Config (string path)
        {
            values = File.ReadLines(path)
            .Where(line => (!String.IsNullOrWhiteSpace(line) && !line.StartsWith("#")))
            .Select(line => line.Split(new char[] { '=' }, 2, 0))
            .ToDictionary(parts => parts[0].Trim(), parts => parts.Length>1?parts[1].Trim():null);
        }
        public string Value (string name, string value=null)
        {
            if (values!=null && values.ContainsKey(name))
            {
                return values[name];
            }
            return value;
        }
    }
}

Usage sample:

    file = new Tool.Config (Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location) + "\\config.ini");
    command = file.Value ("command");
    action = file.Value ("action");
    string value;
    //second parameter is default value if no key found with this name
    value = file.Value("debug","true");
    this.debug = (value.ToLower()=="true" || value== "1");
    value = file.Value("plain", "false");
    this.plain = (value.ToLower() == "true" || value == "1");

Config file content meanwhile (as you see supports # symbol for line comment):

#command to run
command = php

#default script
action = index.php

#debug mode
#debug = true

#plain text mode
#plain = false

#icon = favico.ico

Usually I override my compareTo() method like this whenever I have to do multilevel sorting.

public int compareTo(Song o) {
    // TODO Auto-generated method stub
    int comp1 = 10000000*(movie.compareTo(o.movie))+1000*(artist.compareTo(o.artist))+songLength;
    int comp2 = 10000000*(o.movie.compareTo(movie))+1000*(o.artist.compareTo(artist))+o.songLength;
    return comp1-comp2;
} 

Here first preference is given to movie name then to artist and lastly to songLength. You just have to make sure that those multipliers are distant enough to not cross each other's boundaries.

To had to distinct by two fields (derivative_id & vehicle_type) and to sort by cheapest car. Had to nest aggs.

GET /cars/_search
{
  "size": 0,
  "aggs": {
    "distinct_by_derivative_id": {
      "terms": { 
        "field": "derivative_id"
      },
      "aggs": {
        "vehicle_type": {
          "terms": {
            "field": "vehicle_type"
          },
          "aggs": {
            "cheapest_vehicle": {
              "top_hits": {
                "sort": [
                  { "rental": { "order": "asc" } }
                ],
                "_source": { "includes": [ "manufacturer_name",
                  "rental",
                  "vehicle_type" 
                  ]
                },
                "size": 1
              }
            }
          }
        }
      }
    }
  }
}

Result:

{
  "took" : 3,
  "timed_out" : false,
  "_shards" : {
    "total" : 5,
    "successful" : 5,
    "skipped" : 0,
    "failed" : 0
  },
  "hits" : {
    "total" : {
      "value" : 8,
      "relation" : "eq"
    },
    "max_score" : null,
    "hits" : [ ]
  },
  "aggregations" : {
    "distinct_by_derivative_id" : {
      "doc_count_error_upper_bound" : 0,
      "sum_other_doc_count" : 0,
      "buckets" : [
        {
          "key" : "04",
          "doc_count" : 3,
          "vehicle_type" : {
            "doc_count_error_upper_bound" : 0,
            "sum_other_doc_count" : 0,
            "buckets" : [
              {
                "key" : "CAR",
                "doc_count" : 2,
                "cheapest_vehicle" : {
                  "hits" : {
                    "total" : {
                      "value" : 2,
                      "relation" : "eq"
                    },
                    "max_score" : null,
                    "hits" : [
                      {
                        "_index" : "cars",
                        "_type" : "_doc",
                        "_id" : "8",
                        "_score" : null,
                        "_source" : {
                          "vehicle_type" : "CAR",
                          "manufacturer_name" : "Renault",
                          "rental" : 89.99
                        },
                        "sort" : [
                          89.99
                        ]
                      }
                    ]
                  }
                }
              },
              {
                "key" : "LCV",
                "doc_count" : 1,
                "cheapest_vehicle" : {
                  "hits" : {
                    "total" : {
                      "value" : 1,
                      "relation" : "eq"
                    },
                    "max_score" : null,
                    "hits" : [
                      {
                        "_index" : "cars",
                        "_type" : "_doc",
                        "_id" : "7",
                        "_score" : null,
                        "_source" : {
                          "vehicle_type" : "LCV",
                          "manufacturer_name" : "Ford",
                          "rental" : 99.99
                        },
                        "sort" : [
                          99.99
                        ]
                      }
                    ]
                  }
                }
              }
            ]
          }
        },
        {
          "key" : "01",
          "doc_count" : 2,
          "vehicle_type" : {
            "doc_count_error_upper_bound" : 0,
            "sum_other_doc_count" : 0,
            "buckets" : [
              {
                "key" : "CAR",
                "doc_count" : 1,
                "cheapest_vehicle" : {
                  "hits" : {
                    "total" : {
                      "value" : 1,
                      "relation" : "eq"
                    },
                    "max_score" : null,
                    "hits" : [
                      {
                        "_index" : "cars",
                        "_type" : "_doc",
                        "_id" : "1",
                        "_score" : null,
                        "_source" : {
                          "vehicle_type" : "CAR",
                          "manufacturer_name" : "Ford",
                          "rental" : 599.99
                        },
                        "sort" : [
                          599.99
                        ]
                      }
                    ]
                  }
                }
              },
              {
                "key" : "LCV",
                "doc_count" : 1,
                "cheapest_vehicle" : {
                  "hits" : {
                    "total" : {
                      "value" : 1,
                      "relation" : "eq"
                    },
                    "max_score" : null,
                    "hits" : [
                      {
                        "_index" : "cars",
                        "_type" : "_doc",
                        "_id" : "2",
                        "_score" : null,
                        "_source" : {
                          "vehicle_type" : "LCV",
                          "manufacturer_name" : "Ford",
                          "rental" : 599.99
                        },
                        "sort" : [
                          599.99
                        ]
                      }
                    ]
                  }
                }
              }
            ]
          }
        },
        {
          "key" : "02",
          "doc_count" : 2,
          "vehicle_type" : {
            "doc_count_error_upper_bound" : 0,
            "sum_other_doc_count" : 0,
            "buckets" : [
              {
                "key" : "CAR",
                "doc_count" : 2,
                "cheapest_vehicle" : {
                  "hits" : {
                    "total" : {
                      "value" : 2,
                      "relation" : "eq"
                    },
                    "max_score" : null,
                    "hits" : [
                      {
                        "_index" : "cars",
                        "_type" : "_doc",
                        "_id" : "4",
                        "_score" : null,
                        "_source" : {
                          "vehicle_type" : "CAR",
                          "manufacturer_name" : "Audi",
                          "rental" : 499.99
                        },
                        "sort" : [
                          499.99
                        ]
                      }
                    ]
                  }
                }
              }
            ]
          }
        },
        {
          "key" : "03",
          "doc_count" : 1,
          "vehicle_type" : {
            "doc_count_error_upper_bound" : 0,
            "sum_other_doc_count" : 0,
            "buckets" : [
              {
                "key" : "CAR",
                "doc_count" : 1,
                "cheapest_vehicle" : {
                  "hits" : {
                    "total" : {
                      "value" : 1,
                      "relation" : "eq"
                    },
                    "max_score" : null,
                    "hits" : [
                      {
                        "_index" : "cars",
                        "_type" : "_doc",
                        "_id" : "5",
                        "_score" : null,
                        "_source" : {
                          "vehicle_type" : "CAR",
                          "manufacturer_name" : "Audi",
                          "rental" : 399.99
                        },
                        "sort" : [
                          399.99
                        ]
                      }
                    ]
                  }
                }
              }
            ]
          }
        }
      ]
    }
  }
}

I agree with the other answers that point you to app.config. However, rather than reading values directly from app.config, you should create a utility class (AppSettings is the name I use) to read them and expose them as properties. The AppSettings class can be used to aggregate settings from several stores, such as values from app.config and application version info from the assembly (AssemblyVersion and AssemblyFileVersion).

I think the cleanest way is definitely to go the AOP route. Make a few aspects, add the necessary attributes, and you never have to check thread affinity again.

LDF holds the transaction log. If you set your backups correctly - it will be small. It it grows - you have a very common problem of setting database recovery mode to FULL and then forgetting to backup the transaction log (LDF file). Let me explain how to fix it.

1. If your business can afford to lose a little data between backups, just set the database recovery mode to SIMPLE, then forget about LDF - it will be small. This is the recommended solution for most of the cases.
2. If you have to be able to restore to the exact point in time - use FULL recovery mode. In this case you have to take regular Transaction Log backups. The simplest way to do it is to use a tool like SqlBackupAndFTP (disclosure - I am a developer). The log file will be truncated at this time and would not grow beyond certain limits.

Some would suggest to use SHRINKFILE to trim you log. Note that this is OK only as an exception. If you do it regularly, it defeats the purpose of FULL recovery model: first you go into trouble of saving every single change in the log, then you just dump it. Set recovery mode to SIMPLE instead.

While the OP asks for a CLI command, some of the answers focus on the IDEs. In this answer I just confirm, that the current WebStorm/IntelliJ does allow renaming the component. All that needs to be done is attempting to rename the class in the .ts file. You will be presented with:

and the rename will be performed in all relevant places.

ArrayList<String> listdata = new ArrayList<String>();     
JSONArray jArray = (JSONArray)jsonObject; 
if (jArray != null) { 
 listdata.addAll(jArray);
}

@simplified

Put the select statement in a dynamic PL/SQL block.

CREATE OR REPLACE FUNCTION get_num_of_employees (p_loc VARCHAR2, p_job VARCHAR2) 
RETURN NUMBER
IS
  v_query_str VARCHAR2(1000);
  v_num_of_employees NUMBER;
BEGIN
  v_query_str := 'begin SELECT COUNT(*) INTO :into_bind FROM emp_' 
                 || p_loc
                 || ' WHERE job = :bind_job; end;';
  EXECUTE IMMEDIATE v_query_str
    USING out v_num_of_employees, p_job;
  RETURN v_num_of_employees;
END;
/

Here is a basic example of a global variable that the rest of your functions can access. Here is a live example for you: http://jsfiddle.net/fxCE9/

var myVariable = 'Hello';
alert('value: ' + myVariable);
myFunction1();
alert('value: ' + myVariable);
myFunction2();
alert('value: ' + myVariable);


function myFunction1() {
    myVariable = 'Hello 1';
}

function myFunction2() {
    myVariable = 'Hello 2';
}

If you are doing this within a jQuery ready() function then make sure your variable is inside the ready() function along with your other functions.

I prefer an answer from Best way to print the result of a bool as 'false' or 'true' in c?, just like

printf("%s\n", "false\0true"+6*x);

• x == 0, "false\0true"+ 0" it means "false";
• x == 1, "false\0true"+ 6" it means "true";

Windows users:

Note: Note to Win32 Users In order to enable this module on a Windows environment, libeay32.dll and ssleay32.dll, or, as of OpenSSL 1.1 libcrypto-.dll and libssl-.dll, must be present in your PATH. Also libssh2.dll must be present in your PATH. You don't need libcurl.dll from the cURL site.

https://www.php.net/manual/en/curl.installation.php

Add your C:\wamp\bin\php\php7.1.15 to your PATH

Restart all services

Assuming your div has some CSS classes already...

<div id="classMe" CssClass="first"></div>

The following won't replace existing definitions:

ClassMe.CssClass += " second";

And if you are not sure until the very last moment...

string classes = ClassMe.CssClass;
ClassMe.CssClass += (classes == "") ? "second" : " second";

Try add jQuery to your project, like

npm i jquery --save

or if you use bower

bower i jquery --save

then

import $ from 'jquery'; 

use the android:background attribute in your xml. Easiest way if you want to apply it to a whole activity is to put it in the root of your layout. So if you have a RelativeLayout as the start of your xml, put it in here:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/rootRL"
    android:orientation="vertical" 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" 
    android:background="@drawable/background">
</RelativeLayout>

Here is another way without using additional libraries (no error checking included)

function saveAll( callback ){
  var count = 0;
  docs.forEach(function(doc){
      doc.save(function(err){
          count++;
          if( count == docs.length ){
             callback();
          }
      });
  });
}

I'm writing an updated answer for Python 3 to this question.

How is __eq__ handled in Python and in what order?

a == b

It is generally understood, but not always the case, that a == b invokes a.__eq__(b), or type(a).__eq__(a, b).

Explicitly, the order of evaluation is:

1. if b's type is a strict subclass (not the same type) of a's type and has an __eq__, call it and return the value if the comparison is implemented,
2. else, if a has __eq__, call it and return it if the comparison is implemented,
3. else, see if we didn't call b's __eq__ and it has it, then call and return it if the comparison is implemented,
4. else, finally, do the comparison for identity, the same comparison as is.

We know if a comparison isn't implemented if the method returns NotImplemented.

(In Python 2, there was a __cmp__ method that was looked for, but it was deprecated and removed in Python 3.)

Let's test the first check's behavior for ourselves by letting B subclass A, which shows that the accepted answer is wrong on this count:

class A:
    value = 3
    def __eq__(self, other):
        print('A __eq__ called')
        return self.value == other.value

class B(A):
    value = 4
    def __eq__(self, other):
        print('B __eq__ called')
        return self.value == other.value

a, b = A(), B()
a == b

which only prints B __eq__ called before returning False.

How do we know this full algorithm?

The other answers here seem incomplete and out of date, so I'm going to update the information and show you how how you could look this up for yourself.

This is handled at the C level.

We need to look at two different bits of code here - the default __eq__ for objects of class object, and the code that looks up and calls the __eq__ method regardless of whether it uses the default __eq__ or a custom one.

Default __eq__

Looking __eq__ up in the relevant C api docs shows us that __eq__ is handled by tp_richcompare - which in the "object" type definition in cpython/Objects/typeobject.c is defined in object_richcompare for case Py_EQ:.

    case Py_EQ:
        /* Return NotImplemented instead of False, so if two
           objects are compared, both get a chance at the
           comparison.  See issue #1393. */
        res = (self == other) ? Py_True : Py_NotImplemented;
        Py_INCREF(res);
        break;

So here, if self == other we return True, else we return the NotImplemented object. This is the default behavior for any subclass of object that does not implement its own __eq__ method.

How __eq__ gets called

Then we find the C API docs, the PyObject_RichCompare function, which calls do_richcompare.

Then we see that the tp_richcompare function, created for the "object" C definition is called by do_richcompare, so let's look at that a little more closely.

The first check in this function is for the conditions the objects being compared:

• are not the same type, but
• the second's type is a subclass of the first's type, and
• the second's type has an __eq__ method,

then call the other's method with the arguments swapped, returning the value if implemented. If that method isn't implemented, we continue...

    if (!Py_IS_TYPE(v, Py_TYPE(w)) &&
        PyType_IsSubtype(Py_TYPE(w), Py_TYPE(v)) &&
        (f = Py_TYPE(w)->tp_richcompare) != NULL) {
        checked_reverse_op = 1;
        res = (*f)(w, v, _Py_SwappedOp[op]);
        if (res != Py_NotImplemented)
            return res;
        Py_DECREF(res);

Next we see if we can lookup the __eq__ method from the first type and call it. As long as the result is not NotImplemented, that is, it is implemented, we return it.

    if ((f = Py_TYPE(v)->tp_richcompare) != NULL) {
        res = (*f)(v, w, op);
        if (res != Py_NotImplemented)
            return res;
        Py_DECREF(res);

Else if we didn't try the other type's method and it's there, we then try it, and if the comparison is implemented, we return it.

    if (!checked_reverse_op && (f = Py_TYPE(w)->tp_richcompare) != NULL) {
        res = (*f)(w, v, _Py_SwappedOp[op]);
        if (res != Py_NotImplemented)
            return res;
        Py_DECREF(res);
    }

Finally, we get a fallback in case it isn't implemented for either one's type.

The fallback checks for the identity of the object, that is, whether it is the same object at the same place in memory - this is the same check as for self is other:

    /* If neither object implements it, provide a sensible default
       for == and !=, but raise an exception for ordering. */
    switch (op) {
    case Py_EQ:
        res = (v == w) ? Py_True : Py_False;
        break;

Conclusion

In a comparison, we respect the subclass implementation of comparison first.

Then we attempt the comparison with the first object's implementation, then with the second's if it wasn't called.

Finally we use a test for identity for comparison for equality.

It might be an old question, but as a one liner to get the name of the month when we know the indices, I used

String month = new DateFormatSymbols().getMonths()[monthNumber - 1];

or for short names

String month = new DateFormatSymbols().getShortMonths()[monthNumber - 1];

Please be aware that your monthNumber starts counting from 1 while any of the methods above returns an array so you need to start counting from 0.

Sorry, don't have enough rep, or would have commented on CraigTP's answer.

I found the solution from the 1st link - C# Editable ListView, quite easy to use. The general idea is to:

• identify the SubItem that was selected and overlay a TextBox with the SubItem's text over the SubItem
• give this TextBox focus
• change SubItem's text to that of TextBox's when TextBox loses focus

What a workaround for a seemingly simple operation :-|

"live" is needed when you dynamically generate code. Just look the below example :

$("#div1").find('button').click(function() {_x000D_
    $('<button />')_x000D_
     .text('BUTTON')_x000D_
     .appendTo('#div1')_x000D_
})_x000D_
$("#div2").find('button').live("click", function() {_x000D_
    $('<button />')_x000D_
     .text('BUTTON')_x000D_
     .appendTo('#div2')_x000D_
})

button {_x000D_
  margin: 5px;_x000D_
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.6.0/jquery.min.js"></script>_x000D_
<div id="div1">_x000D_
  <button>Click</button>_x000D_
</div>_x000D_
<div id="div2">_x000D_
  <button>Live</button>_x000D_
</div>

without "live" the click-event occurs only when you click the first button, with "live" the click-event occurs also for the dynamically generated buttons

I tried pretty much every suggestion on this page, but had to delete visual studio 2017 completely off my machine. I reinstalled the latest version (2019) and it magically worked. I hope this helps someone in the future.

Another solution I've used is to just have one button in the form, and fake the other buttons.

Here's an example:

<form>
  <label for="amount">Amount of items</label>
  <input id="amount" type="text" name="amount" />
  <span id="checkStock" class="buttonish">Check stock</span>
  <button type="submit" name="action" value="order">Place order</button>
</form>

I then style the span elements to look like a button. A JS listener observes the span and performs the desired operation once clicked.

Not necessarily right for all situations, but at least it's pretty easy to do.

@S-Lott gives the right procedure, but expanding on the Unicode issues, the Python interpreter can provide more insights.

Jon Skeet is right (unusual) about the codecs module - it contains byte strings:

>>> import codecs
>>> codecs.BOM
'\xff\xfe'
>>> codecs.BOM_UTF8
'\xef\xbb\xbf'
>>> 

Picking another nit, the BOM has a standard Unicode name, and it can be entered as:

>>> bom= u"\N{ZERO WIDTH NO-BREAK SPACE}"
>>> bom
u'\ufeff'

It is also accessible via unicodedata:

>>> import unicodedata
>>> unicodedata.lookup('ZERO WIDTH NO-BREAK SPACE')
u'\ufeff'
>>> 

All of the current answers are addressing the symptom (shared memory pool exhaustion), and not the problem, which is likely not using bind variables in your sql \ JDBC queries, even when it does not seem necessary to do so. Passing queries without bind variables causes Oracle to "hard parse" the query each time, determining its plan of execution, etc.

https://asktom.oracle.com/pls/asktom/f?p=100:11:0::::p11_question_id:528893984337

Some snippets from the above link:

"Java supports bind variables, your developers must start using prepared statements and bind inputs into it. If you want your system to ultimately scale beyond say about 3 or 4 users -- you will do this right now (fix the code). It is not something to think about, it is something you MUST do. A side effect of this - your shared pool problems will pretty much disappear. That is the root cause. "

"The way the Oracle shared pool (a very important shared memory data structure) operates is predicated on developers using bind variables."

" Bind variables are SO MASSIVELY important -- I cannot in any way shape or form OVERSTATE their importance. "

If you want them to be displayed side by side, why is sideContent the child of mainContent? make them siblings then use:

float:left; display:inline; width: 49%;

on both of them.

#mainContent, #sideContent {float:left; display:inline; width: 49%;}

Here is a literal pure Python translation of the Welford's algorithm implementation from http://www.johndcook.com/standard_deviation.html:

https://github.com/liyanage/python-modules/blob/master/running_stats.py

import math

class RunningStats:

    def __init__(self):
        self.n = 0
        self.old_m = 0
        self.new_m = 0
        self.old_s = 0
        self.new_s = 0

    def clear(self):
        self.n = 0

    def push(self, x):
        self.n += 1

        if self.n == 1:
            self.old_m = self.new_m = x
            self.old_s = 0
        else:
            self.new_m = self.old_m + (x - self.old_m) / self.n
            self.new_s = self.old_s + (x - self.old_m) * (x - self.new_m)

            self.old_m = self.new_m
            self.old_s = self.new_s

    def mean(self):
        return self.new_m if self.n else 0.0

    def variance(self):
        return self.new_s / (self.n - 1) if self.n > 1 else 0.0

    def standard_deviation(self):
        return math.sqrt(self.variance())

Usage:

rs = RunningStats()
rs.push(17.0)
rs.push(19.0)
rs.push(24.0)

mean = rs.mean()
variance = rs.variance()
stdev = rs.standard_deviation()

print(f'Mean: {mean}, Variance: {variance}, Std. Dev.: {stdev}')

If you want to remove all added files from git for commit

git reset

If you want to remove an individual file

git rm <file>

UPDATE

I found this interesting link how to solve your problem in PHP. I think you forgot to replace space by +as shown in the link.

I took this circle from http://images-mediawiki-sites.thefullwiki.org/04/1/7/5/6204600836255205.png as sample which looks like:

Next I put it through http://www.greywyvern.com/code/php/binary2base64 which returned me:

data:image/png;base64,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

saved this string to base64 which I read from in my code.

var fs      = require('fs'),
data        = fs.readFileSync('base64', 'utf8'),
base64Data,
binaryData;

base64Data  =   data.replace(/^data:image\/png;base64,/, "");
base64Data  +=  base64Data.replace('+', ' ');
binaryData  =   new Buffer(base64Data, 'base64').toString('binary');

fs.writeFile("out.png", binaryData, "binary", function (err) {
    console.log(err); // writes out file without error, but it's not a valid image
});

I get a circle back, but the funny thing is that the filesize has changed :)...

END

When you read back image I think you need to setup headers

Take for example imagepng from PHP page:

<?php
$im = imagecreatefrompng("test.png");

header('Content-Type: image/png');

imagepng($im);
imagedestroy($im);
?>

I think the second line header('Content-Type: image/png');, is important else your image will not be displayed in browser, but just a bunch of binary data is shown to browser.

In Express you would simply just use something like below. I am going to display your gravatar which is located at http://www.gravatar.com/avatar/cabf735ce7b8b4471ef46ea54f71832d?s=32&d=identicon&r=PG and is a jpeg file when you curl --head http://www.gravatar.com/avatar/cabf735ce7b8b4471ef46ea54f71832d?s=32&d=identicon&r=PG. I only request headers because else curl will display a bunch of binary stuff(Google Chrome immediately goes to download) to console:

curl --head "http://www.gravatar.com/avatar/cabf735ce7b8b4471ef46ea54f71832d?s=32&d=identicon&r=PG"
HTTP/1.1 200 OK
Server: nginx
Date: Wed, 03 Aug 2011 12:11:25 GMT
Content-Type: image/jpeg
Connection: keep-alive
Last-Modified: Mon, 04 Oct 2010 11:54:22 GMT
Content-Disposition: inline; filename="cabf735ce7b8b4471ef46ea54f71832d.jpeg"
Access-Control-Allow-Origin: *
Content-Length: 1258
X-Varnish: 2356636561 2352219240
Via: 1.1 varnish
Expires: Wed, 03 Aug 2011 12:16:25 GMT
Cache-Control: max-age=300
Source-Age: 1482

$ mkdir -p ~/tmp/6922728
$ cd ~/tmp/6922728/
$ touch app.js

app.js

var app = require('express').createServer();

app.get('/', function (req, res) {
    res.contentType('image/jpeg');
    res.sendfile('cabf735ce7b8b4471ef46ea54f71832d?s=32&d=identicon&r=PG');
});

app.get('/binary', function (req, res) {
    res.sendfile('cabf735ce7b8b4471ef46ea54f71832d?s=32&d=identicon&r=PG');
});

app.listen(3000);

$ wget "http://www.gravatar.com/avatar/cabf735ce7b8b4471ef46ea54f71832d?s=32&d=identicon&r=PG"
$ node app.js

Replication is not very hard to create.

Here's some good tutorials:

http://www.ghacks.net/2009/04/09/set-up-mysql-database-replication/

http://dev.mysql.com/doc/refman/5.5/en/replication-howto.html

http://www.lassosoft.com/Beginners-Guide-to-MySQL-Replication

Here some simple rules you will have to keep in mind (there's more of course but that is the main concept):

1. Setup 1 server (master) for writing data.
2. Setup 1 or more servers (slaves) for reading data.

This way, you will avoid errors.

For example: If your script insert into the same tables on both master and slave, you will have duplicate primary key conflict.

You can view the "slave" as a "backup" server which hold the same information as the master but cannot add data directly, only follow what the master server instructions.

NOTE: Of course you can read from the master and you can write to the slave but make sure you don't write to the same tables (master to slave and slave to master).

I would recommend to monitor your servers to make sure everything is fine.

Let me know if you need additional help

It's important to note, that NULL doesn't equal NULL.

NULL is not a value, and therefore cannot be compared to another value.

where x is null checks whether x is a null value.

where x = null is checking whether x equals NULL, which will never be true

We've found a simple and decent way to do this. It's cross-browser,degradable, and doesn't break a form post. First set the select box's opacity to 0.

.select { 
    opacity : 0;
    width: 200px;
    height: 15px;
}

<select class='select'>
    <option value='foo'>bar</option>    
</select>

this is so you can still click on it

Then make div with the same dimensions as the select box. The div should lay under the select box as the background. Use { position: absolute } and z-index to achieve this.

.div {
    width: 200px;
    height: 15px;
    position: absolute;
    z-index: 0;
}

<div class='.div'>{the text of the the current selection updated by javascript}</div>
<select class='select'>
    <option value='foo'>bar</option>    
</select>

Update the div's innerHTML with javascript. Easypeasy with jQuery:

$('.select').click(function(event)) { 
    $('.div').html($('.select option:selected').val());
}

That's it! Just style your div instead of the select box. I haven't tested the above code so you'll probably need tweak it. But hopefully you get the gist.

I think this solution beats {-webkit-appearance: none;}. What browsers should do at the very most is dictate interaction with form elements, but definitely not how their initially displayed on the page as that breaks site design.

If you want to fix vbs associations type

regsvr32 vbscript.dll
regsvr32 jscript.dll
regsvr32 wshext.dll
regsvr32 wshom.ocx
regsvr32 wshcon.dll
regsvr32 scrrun.dll

Also if you can't use vbs due to management then convert your script to a vb.net program which is designed to be easy, is easy, and takes 5 minutes.

Big difference is functions and subs are both called using brackets rather than just functions.

So the compilers are installed on all computers with .NET installed.

See this article here on how to make a .NET exe. Note the sample is for a scripting host. You can't use this, you have to put your vbs code in as .NET code.

How can I convert a VBScript to an executable (EXE) file?

Try this below code, Its very short and simple.

transalate_anim.xml

<?xml version="1.0" encoding="utf-8"?><!-- Copyright (C) 2013 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
-->
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:duration="4000"
        android:fromXDelta="0"
        android:fromYDelta="0"
        android:repeatCount="infinite"
        android:toXDelta="0"
        android:toYDelta="-90%p" />

    <alpha xmlns:android="http://schemas.android.com/apk/res/android"
        android:duration="4000"
        android:fromAlpha="0.0"
        android:repeatCount="infinite"
        android:toAlpha="1.0" />
</set>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.naveen.congratulations.MainActivity">


    <ImageView
        android:id="@+id/image_1"
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_marginBottom="8dp"
        android:layout_marginStart="8dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:srcCompat="@drawable/balloons" />
</android.support.constraint.ConstraintLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        final ImageView imageView1 = (ImageView) findViewById(R.id.image_1);
        imageView1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                startBottomToTopAnimation(imageView1);
            }
        });

    }

    private void startBottomToTopAnimation(View view) {
        view.startAnimation(AnimationUtils.loadAnimation(this, R.anim.translate_anim));
    }
}

AutoScroll is really the solution! You just have to set AutoScrollMargin to 0, 1000 or something like this, then use it to scroll down and add buttons and items there!

Depending on your context; this will allow you to update state given the mouseEnter function. Either way, by setting a state value to either true:false you can update that state value given any function by setting it to the opposing value with !this.state.variable

state = {
  hover: false
}

onMouseEnter = () => {
  this.setState({
    hover: !this.state.hover
  });
};

- name: host
   debug: msg="{{ item }}" 
   with_items:
    - "{{ groups['tests'] }}"

This piece of code will give the message:

'10.112.84.122'
'10.112.84.124'

as groups['tests'] basically return a list of unique ip addresses ['10.112.84.122','10.112.84.124'] whereas groups['tomcat'][0] returns 10.112.84.124.

Ensure that your 3rd party jars are in your projects "libs" folder and they will be put in the .apk when you package your application. You may see runtime errors on the device if something in the jar is not supported, but other than that I have had great success with this.

I realize this question was asked a long time ago, but I came here looking for answers and wasn't satisfied with anything I could find. I finally found the answer here:

https://www.tutorialsteacher.com/mvc/htmlhelper-dropdownlist-dropdownlistfor

To get the results from the form, use the FormCollection and then pull each individual value out by it's model name thus:

yourRecord.FieldName = Request.Form["FieldNameInModel"];

As far as I could tell it makes absolutely no difference what argument name you give to the FormCollection - use Request.Form["NameFromModel"] to retrieve it.

No, I did not dig down to see how th4e magic works under the covers. I just know it works...

I hope this helps somebody avoid the hours I spent trying different approaches before I got it working.

Updated:

This answer is simpler than my answer: https://stackoverflow.com/a/21718540/541862

Original answer:

# Create a backup of master branch
git branch backup_master

# Point master to '56e05fce' and
# make working directory the same with '56e05fce'
git reset --hard 56e05fce

# Point master back to 'backup_master' and
# leave working directory the same with '56e05fce'.
git reset --soft backup_master

# Now working directory is the same '56e05fce' and
# master points to the original revision. Then we create a commit.
git commit -a -m "Revert to 56e05fce"

# Delete unused branch
git branch -d backup_master

The two commands git reset --hard and git reset --soft are magic here. The first one changes the working directory, but it also changes head (the current branch) too. We fix the head by the second one.

Adding ->getContents() doesn't return jSON response, instead it returns as text.

You can simply use json_decode

I've found different compilers return different results on true. I've also found that one is almost always better off comparing a bool to a bool instead of an int. Those ints tend to change value over time as your program evolves and if you assume true as 1, you can get bitten by an unrelated change elsewhere in your code.

You can use ARG - see https://docs.docker.com/engine/reference/builder/#arg

The ARG instruction defines a variable that users can pass at build-time to the builder with the docker build command using the --build-arg <varname>=<value> flag. If a user specifies a build argument that was not defined in the Dockerfile, the build outputs an error.

i faced the same issue few days earlier for my IONIC 4 Project. when i uploaded my IPA, i got this warnings from App Store Connect.

I fixed the "Missing Purpose String in info.plist" issue, by the following steps. hope it will also work for you.

1. Goto your "info.plist" file.

2. Find this key, called Privacy - Photo Library Usage Description. if it's not present there, add a new one and it's value, like below image.

Thanks.

Update 2016:

Google Chrome released the storage API: http://developer.chrome.com/extensions/storage.html

It is pretty easy to use like the other Chrome APIs and you can use it from any page context within Chrome.

    // Save it using the Chrome extension storage API.
    chrome.storage.sync.set({'foo': 'hello', 'bar': 'hi'}, function() {
      console.log('Settings saved');
    });

    // Read it using the storage API
    chrome.storage.sync.get(['foo', 'bar'], function(items) {
      message('Settings retrieved', items);
    });

To use it, make sure you define it in the manifest:

    "permissions": [
      "storage"
    ],

There are methods to "remove", "clear", "getBytesInUse", and an event listener to listen for changed storage "onChanged"

Using native localStorage (old reply from 2011)

Content scripts run in the context of webpages, not extension pages. Therefore, if you're accessing localStorage from your contentscript, it will be the storage from that webpage, not the extension page storage.

Now, to let your content script to read your extension storage (where you set them from your options page), you need to use extension message passing.

The first thing you do is tell your content script to send a request to your extension to fetch some data, and that data can be your extension localStorage:

contentscript.js

chrome.runtime.sendMessage({method: "getStatus"}, function(response) {
  console.log(response.status);
});

background.js

chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
    if (request.method == "getStatus")
      sendResponse({status: localStorage['status']});
    else
      sendResponse({}); // snub them.
});

You can do an API around that to get generic localStorage data to your content script, or perhaps, get the whole localStorage array.

I hope that helped solve your problem.

To be fancy and generic ...

contentscript.js

chrome.runtime.sendMessage({method: "getLocalStorage", key: "status"}, function(response) {
  console.log(response.data);
});

background.js

chrome.runtime.onMessage.addListener(function(request, sender, sendResponse) {
    if (request.method == "getLocalStorage")
      sendResponse({data: localStorage[request.key]});
    else
      sendResponse({}); // snub them.
});

Beyond compare allows you to do that and much more.

It's one of those tools I can't live without.
Take a look here for a reference on the scripting options

I'd like to extend the paulalexandru's answer and put here complete solution that works generally with bootstrap dropdowns and updating main button's content and also the value from selected option.

The bootstrap dropdown is defined this way:

<div class="btn-group" role="group">
  <button type="button" data-toggle="dropdown" value="1" class="btn btn-default btn-sm dropdown-toggle">
    Option 1 <span class="caret"></span>
  </button>
  <ul class="dropdown-menu">
    <li><a href="#" data-value="1">Option 1</a></li>
    <li><a href="#" data-value="2">Option 2</a></li>
    <li><a href="#" data-value="3">Option 3</a></li>
  </ul>
</div> 

Additional to standard bootstrap dropdown code, there is data-value attribute for storing the values in every dropdown option (in <a> element).

Now the JS code. I crated function that handle the dropdowns:

function dropdownToggle() {
    // select the main dropdown button element
    var dropdown = $(this).parent().parent().prev();

    // change the CONTENT of the button based on the content of selected option
    dropdown.html($(this).html() + '&nbsp;</i><span class="caret"></span>');

    // change the VALUE of the button based on the data-value property of selected option
    dropdown.val($(this).prop('data-value'));
}

And of course we need to add event listener:

$(document).ready(function(){
    $('.dropdown-menu a').on('click', dropdownToggle);
}

You could just change the shebang line. I do this all the time on new systems.

If you want pip to install to a current version of Python installed just update the shebang line to the correct version of pythons path.

For example, to change pip (not pip3) to install to Python 3:

#!/usr/bin/python

To:

#!/usr/bin/python3

Any module you install using pip should install to Python not Python.

Or you could just change the path.

There is another solution.

Implement IFormatProvider to return a ICustomFormatter that will be passed to string.Format :

public class StringPadder : ICustomFormatter
{
  public string Format(string format, object arg,
       IFormatProvider formatProvider)
  {
     // do padding for string arguments
     // use default for others
  }
}

public class StringPadderFormatProvider : IFormatProvider
{
  public object GetFormat(Type formatType)
  { 
     if (formatType == typeof(ICustomFormatter))
        return new StringPadder();

     return null;
  }
  public static readonly IFormatProvider Default =
     new StringPadderFormatProvider();
}

Then you can use it like this :

string.Format(StringPadderFormatProvider.Default, "->{0:x20}<-", "Hello");

You are mixing the 1.5.6 version of the jcl bridge with the 1.6.0 version of the slf4j-api; this won't work because of a few changes in 1.6.0. Use the same versions for both, i.e. 1.6.1 (the latest). I use the jcl-over-slf4j bridge all the time and it works fine.

Quite an old question, but might be helpful to somebody in need.

If you know the url, 1. open the chrome browser, 2. open developer tools in chrome , 3. Put the url in search bar and hit enter 4. look in network tab, you will see the ip and port both

Maybe someone finds this useful when working with React/Node/Axios. I used this for my Cloudinary image upload feature with react-dropzone on the UI.

    axios({
        method: 'get',
        url: file[0].preview, // blob url eg. blob:http://127.0.0.1:8000/e89c5d87-a634-4540-974c-30dc476825cc
        responseType: 'blob'
    }).then(function(response){
         var reader = new FileReader();
         reader.readAsDataURL(response.data); 
         reader.onloadend = function() {
             var base64data = reader.result;
             self.props.onMainImageDrop(base64data)
         }

    })

For anyone else that comes across this post and might find it useful... There is actually nothing wrong with my code. I made the mistake of requesting client_credentials type access code instead of password access code (#facepalms). FYI I am using urlencoded post hence the use of querystring.. So for those that may be looking for some example code.. here is my full request

Big thanks to @swapnil for trying to help me debug this.

   const data = {
      grant_type: USER_GRANT_TYPE,
      client_id: CLIENT_ID,
      client_secret: CLIENT_SECRET,
      scope: SCOPE_INT,
      username: DEMO_EMAIL,
      password: DEMO_PASSWORD
    };



  axios.post(TOKEN_URL, Querystring.stringify(data))   
   .then(response => {
      console.log(response.data);
      USER_TOKEN = response.data.access_token;
      console.log('userresponse ' + response.data.access_token); 
    })   
   .catch((error) => {
      console.log('error ' + error);   
   });



const AuthStr = 'Bearer '.concat(USER_TOKEN); 
axios.get(URL, { headers: { Authorization: AuthStr } })
 .then(response => {
     // If request is good...
     console.log(response.data);
  })
 .catch((error) => {
     console.log('error ' + error);
  });

You can easily do this using node-fetch if you are pulling from http(s) URIs.

From the readme:

fetch('https://assets-cdn.github.com/images/modules/logos_page/Octocat.png')
    .then(res => res.buffer())
    .then(buffer => console.log)

This excerpt from the glibc manual 0.02 may also be relevant when researching the topic:

There is a potential problem with the size_t type and versions of GCC prior to release 2.4. ANSI C requires that size_t always be an unsigned type. For compatibility with existing systems' header files, GCC defines size_t in stddef.h' to be whatever type the system'ssys/types.h' defines it to be. Most Unix systems that define size_t in `sys/types.h', define it to be a signed type. Some code in the library depends on size_t being an unsigned type, and will not work correctly if it is signed.

The GNU C library code which expects size_t to be unsigned is correct. The definition of size_t as a signed type is incorrect. We plan that in version 2.4, GCC will always define size_t as an unsigned type, and the fixincludes' script will massage the system'ssys/types.h' so as not to conflict with this.

In the meantime, we work around this problem by telling GCC explicitly to use an unsigned type for size_t when compiling the GNU C library. `configure' will automatically detect what type GCC uses for size_t arrange to override it if necessary.

Another alternative:

:call cursor('.',strwidth(getline('.')))

This is may be useful if you're writing a function. Another situation would be when I need to open a specific template and jump to end of first line, I can do:

vi +"call cursor('.',strwidth(getline(1)))"  notetaking_template.txt

The above could also be done with

vi +"execute ':normal! $'" notetaking_template.txt

See also:

vim - Get length of the current line

shuf -i 2000-65000 -n 1

Enjoy!

Edit: The range is inclusive.

I don't think there's a standard as to the location of the sitemap. That's the reason why you should specify an arbitrary URL to your sitemap when you're adding one using Google's Webmaster Tools.

The short answer is:

int nBits = ceil(log2(N));

That's simply because pow(2, nBits) is slightly bigger than N.

In compact edition will take size automatically for datetime data type i.e. (8) so no need to set size of field and generate error for this operation...

It is possible to dynamically generate a JavaScript tag and append it to HTML document from inside other JavaScript code. This will load targeted JavaScript file.

function includeJs(jsFilePath) {
    var js = document.createElement("script");

    js.type = "text/javascript";
    js.src = jsFilePath;

    document.body.appendChild(js);
}

includeJs("/path/to/some/file.js");

I had the same problem after a MacOS system upgrade. Solved it by upgrading the postgres with brew. Details: it looks like the system was trying to access Postgres 11 using older Postgres 10 settings. I'm sure it was my mistake somewhere in the past, but luckily it all got sorted out with the upgrade above.

$futureDate=date('Y-m-d', strtotime('+1 year'));

$futureDate is one year from now!

$futureDate=date('Y-m-d', strtotime('+1 year', strtotime($startDate)) );

$futureDate is one year from $startDate!

If the object is created not via a pointer(for example,A a1 = A();),the destructor is called when the object is destructed, always when the function where the object lies is finished.for example:

void func()
{
...
A a1 = A();
...
}//finish

the destructor is called when code is execused to line "finish".

If the object is created via a pointer(for example,A * a2 = new A();),the destructor is called when the pointer is deleted(delete a2;).If the point is not deleted by user explictly or given a new address before deleting it, the memory leak is occured. That is a bug.

In a linked list, if we use std::list<>, we needn't care about the desctructor or memory leak because std::list<> has finished all of these for us. In a linked list written by ourselves, we should write the desctructor and delete the pointer explictly.Otherwise, it will cause memory leak.

We rarely call a destructor manually. It is a function providing for the system.

Sorry for my poor English!

$(this).css('background-color', 'red');

You need to read something about a JSP's lifecycle. Try this: http://en.wikipedia.org/wiki/File:JSPLife.png

JavaScript runs on the client, but in order to change the jsp, you need access to the server. This can be done through Ajax(http://en.wikipedia.org/wiki/Ajax_%28programming%29).

Here are some Ajax-related links: http://www.openjs.com/articles/ajax_xmlhttp_using_post.php

http://www.w3schools.com/ajax/tryit.asp?filename=tryajax_first

In python, you can put ‘j’ or ‘J’ after a number to make it imaginary, so you can write complex literals easily:

>>> 1j
1j
>>> 1J
1j
>>> 1j * 1j
(-1+0j)

The ‘j’ suffix comes from electrical engineering, where the variable ‘i’ is usually used for current. (Reasoning found here.)

The type of a complex number is complex, and you can use the type as a constructor if you prefer:

>>> complex(2,3)
(2+3j)

A complex number has some built-in accessors:

>>> z = 2+3j
>>> z.real
2.0
>>> z.imag
3.0
>>> z.conjugate()
(2-3j)

Several built-in functions support complex numbers:

>>> abs(3 + 4j)
5.0
>>> pow(3 + 4j, 2)
(-7+24j)

The standard module cmath has more functions that handle complex numbers:

>>> import cmath
>>> cmath.sin(2 + 3j)
(9.15449914691143-4.168906959966565j)

var data = (from n in db.users select n);
db.users.RemoveRange(data);
db.SaveChanges();

An other solution rm(list=ls(pattern="temp")), remove all objects matching the pattern.

You can simply handle file uploads through PowerShell, like this. Complete project is available on Github here https://github.com/edouardkombo/PowerShellFtp

#Directory where to find pictures to upload
$Dir= 'c:\fff\medias\'

#Directory where to save uploaded pictures
$saveDir = 'c:\fff\save\'

#ftp server params
$ftp = 'ftp://10.0.1.11:21/'
$user = 'user'
$pass = 'pass'

#Connect to ftp webclient
$webclient = New-Object System.Net.WebClient 
$webclient.Credentials = New-Object System.Net.NetworkCredential($user,$pass)  

#Initialize var for infinite loop
$i=0

#Infinite loop
while($i -eq 0){ 

    #Pause 1 seconde before continue
    Start-Sleep -sec 1

    #Search for pictures in directory
    foreach($item in (dir $Dir "*.jpg"))
    {
        #Set default network status to 1
        $onNetwork = "1"

        #Get picture creation dateTime...
        $pictureDateTime = (Get-ChildItem $item.fullName).CreationTime

        #Convert dateTime to timeStamp
        $pictureTimeStamp = (Get-Date $pictureDateTime).ToFileTime()

        #Get actual timeStamp
        $timeStamp = (Get-Date).ToFileTime() 

        #Get picture lifeTime
        $pictureLifeTime = $timeStamp - $pictureTimeStamp

        #We only treat pictures that are fully written on the disk
        #So, we put a 2 second delay to ensure even big pictures have been fully wirtten   in the disk
        if($pictureLifeTime -gt "2") {    

            #If upload fails, we set network status at 0
            try{

                $uri = New-Object System.Uri($ftp+$item.Name)

                $webclient.UploadFile($uri, $item.FullName)

            } catch [Exception] {

                $onNetwork = "0"
                write-host $_.Exception.Message;
            }

            #If upload succeeded, we do further actions
            if($onNetwork -eq "1"){
                "Copying $item..."
                Copy-Item -path $item.fullName -destination $saveDir$item 

                "Deleting $item..."
                Remove-Item $item.fullName
            }


        }  
    }
}   

A different perspective to the same problem away from Javascript and using php:

<a data-toggle="modal" href="#myModal">LINK</a>

<div class="modal fade" tabindex="-1" aria-labelledby="gridSystemModalLabel" id="myModal" role="dialog" style="max-width: 90%;">
    <div class="modal-dialog" style="text-align: left;">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal">&times;</button>
                <h4 class="modal-title">Title</h4>
            </div>
            <div class="modal-body">
                <?php include( 'remotefile.php'); ?>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
            </div>
        </div>
    </div>
</div>

and put in the remote.php file your basic html source.

Locate the installation path of GlassFish. Then move to domains/domain-dir/logs/ and you'll find there the log files. If you have created the domain with NetBeans, the domain-dir is most probably called domain1.

See this link for the official GlassFish documentation about logging.

For efficiency's sake you want to only hit the data once, as Harper does. However you don't want to use rank() because it will give you ties and further you want to group by language rather than order by language. From there you want add an order by clause to distinguish between rows, but you don't want to actually sort the data. To achieve this I would use "order by null" E.g.

count(*) over (group by language order by null)

Here's another way to force a type-cast even between incompatible types and interfaces where TS compiler normally complains:

export function forceCast<T>(input: any): T {

  // ... do runtime checks here

  // @ts-ignore <-- forces TS compiler to compile this as-is
  return input;
}

Then you can use it to force cast objects to a certain type:

import { forceCast } from './forceCast';

const randomObject: any = {};
const typedObject = forceCast<IToDoDto>(randomObject);

Note that I left out the part you are supposed to do runtime checks before casting for the sake of reducing complexity. What I do in my project is compiling all my .d.ts interface files into JSON schemas and using ajv to validate in runtime.

I sometimes encounter the same issue. I can only answer your second bullet, because I am not as expert in R as I am with other languages. I have found that the standard for loop has some unexpected results. Say x = 0

for (i in 1:x) {
  print(i)
}

The output is

[1] 1
[1] 0

Whereas with python, for example

for i in range(x):
  print i

does nothing. The loop is not entered.

I expected that if x = 0 that in R, the loop would not be entered. However, 1:0 is a valid range of numbers. I have not yet found a good workaround besides having an if statement wrapping the for loop

use spawn

import os
os.spawnlp(os.P_WAIT, 'cp', 'cp', 'index.html', '/dev/null')

Mixed Subtype

The "mixed" subtype of "multipart" is intended for use when the body parts are independent and need to be bundled in a particular order. Any "multipart" subtypes that an implementation does not recognize must be treated as being of subtype "mixed".

Alternative Subtype

The "multipart/alternative" type is syntactically identical to "multipart/mixed", but the semantics are different. In particular, each of the body parts is an "alternative" version of the same information

Source

If using Python 2.5, you may need to import simplejson:

try:
    import json
except ImportError:
    import simplejson as json

JSON is a format that encodes objects in a string. Serialization means to convert an object into that string, and deserialization is its inverse operation (convert string -> object).

When transmitting data or storing them in a file, the data are required to be byte strings, but complex objects are seldom in this format. Serialization can convert these complex objects into byte strings for such use. After the byte strings are transmitted, the receiver will have to recover the original object from the byte string. This is known as deserialization.

Say, you have an object:

{foo: [1, 4, 7, 10], bar: "baz"}

serializing into JSON will convert it into a string:

'{"foo":[1,4,7,10],"bar":"baz"}'

which can be stored or sent through wire to anywhere. The receiver can then deserialize this string to get back the original object. {foo: [1, 4, 7, 10], bar: "baz"}.

Here's one: (check out http://hongouru.blogspot.ie/2011/09/c-ocr-optical-character-recognition.html or http://www.codeproject.com/Articles/41709/How-To-Use-Office-2007-OCR-Using-C for more info)

using MODI;
static void Main(string[] args)
{
    DocumentClass myDoc = new DocumentClass();
    myDoc.Create(@"theDocumentName.tiff"); //we work with the .tiff extension
    myDoc.OCR(MiLANGUAGES.miLANG_ENGLISH, true, true);

    foreach (Image anImage in myDoc.Images)
    {
        Console.WriteLine(anImage.Layout.Text); //here we cout to the console.
    }
}

DIM stands for Declaration In Memory DIM x As New Integer creates a space in memory where the variable x is stored

Here, if you are converting string into byte[].There is a utility code :

    String[] str = result.replaceAll("\\[", "").replaceAll("\\]","").split(", ");
    byte[] dataCopy = new byte[str.length] ;
    int i=0;
    for(String s:str ) {
        dataCopy[i]=Byte.valueOf(s);
        i++;
    }
    return dataCopy;

Some other possibilities:

if (in_array($value, range($min, $max), true)) {
    echo "You can be sure that $min <= $value <= $max";
}

Or:

if ($value === min(max($value, $min), $max)) {
    echo "You can be sure that $min <= $value <= $max";
}

Actually this is what is use to cast a value which is out of the range to the closest end of it.

$value = min(max($value, $min), $max);

Example

/**
 * This is un-sanitized user input.
 */
$posts_per_page = 999;

/**
 * Sanitize $posts_per_page.
 */
$posts_per_page = min(max($posts_per_page, 5), 30);

/**
 * Use.
 */
var_dump($posts_per_page); // Output: int(30)

Looking at the "effective POM" will probably help too. For instance, if you wanted to know what the path is for ${project.build.sourceDirectory}

you would find the related XML in the effective POM, such as: <project> <build> <sourceDirectory>/my/path</sourceDirectory>

Also helpful - you can do a real time evaluation of properties via the command line execution of mvn help:evaluate while in the same dir as the POM.

There is no "convention" that requires table names to be singular.

For example, we had a table called "REJECTS" on a db used by a rating process, containing the records rejected from one run of the program, and I don't see any reason in not using plural for that table (naming it "REJECT" would have been just funny, or too optimistic).

About the other problem (quotes) it depends on the SQL dialect. Oracle doesn't require quotes around table names.

I've created an extension method for this which makes use of SemaphoreSlim and also allows to set maximum degree of parallelism

    /// <summary>
    /// Concurrently Executes async actions for each item of <see cref="IEnumerable<typeparamref name="T"/>
    /// </summary>
    /// <typeparam name="T">Type of IEnumerable</typeparam>
    /// <param name="enumerable">instance of <see cref="IEnumerable<typeparamref name="T"/>"/></param>
    /// <param name="action">an async <see cref="Action" /> to execute</param>
    /// <param name="maxDegreeOfParallelism">Optional, An integer that represents the maximum degree of parallelism,
    /// Must be grater than 0</param>
    /// <returns>A Task representing an async operation</returns>
    /// <exception cref="ArgumentOutOfRangeException">If the maxActionsToRunInParallel is less than 1</exception>
    public static async Task ForEachAsyncConcurrent<T>(
        this IEnumerable<T> enumerable,
        Func<T, Task> action,
        int? maxDegreeOfParallelism = null)
    {
        if (maxDegreeOfParallelism.HasValue)
        {
            using (var semaphoreSlim = new SemaphoreSlim(
                maxDegreeOfParallelism.Value, maxDegreeOfParallelism.Value))
            {
                var tasksWithThrottler = new List<Task>();

                foreach (var item in enumerable)
                {
                    // Increment the number of currently running tasks and wait if they are more than limit.
                    await semaphoreSlim.WaitAsync();

                    tasksWithThrottler.Add(Task.Run(async () =>
                    {
                        await action(item).ContinueWith(res =>
                        {
                            // action is completed, so decrement the number of currently running tasks
                            semaphoreSlim.Release();
                        });
                    }));
                }

                // Wait for all tasks to complete.
                await Task.WhenAll(tasksWithThrottler.ToArray());
            }
        }
        else
        {
            await Task.WhenAll(enumerable.Select(item => action(item)));
        }
    }

Sample Usage:

await enumerable.ForEachAsyncConcurrent(
    async item =>
    {
        await SomeAsyncMethod(item);
    },
    5);

I tried accepted answer and got message saying generated excel file is corrupted when trying to open. I was able to fix it by doing few modifications like adding below line end of the code.

workbookPart.Workbook.Save();

I have posted full code @ Export DataTable to Excel with Open XML in c#

Note that in both CMake and Autotools you don't always have to set the installation path at configure time. You can use DESTDIR at install time (see also here) instead as in:

make DESTDIR=<installhere> install

See also this question which explains the subtle difference between DESTDIR and PREFIX.

This is intended for staged installs and to allow for storing programs in a different location from where they are run e.g. /etc/alternatives via symbolic links.

However, if your package is relocatable and doesn't need any hard-coded (prefix) paths set via the configure stage you may be able to skip it. So instead of:

cmake -DCMAKE_INSTALL_PREFIX=/usr . && make all install

you would run:

cmake . && make DESTDIR=/usr all install

Note that, as user7498341 points out, this is not appropriate for cases where you really should be using PREFIX.

In Server 2008 the startup folder for individual users is here:

C:\Users\username\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup

For All Users it's here:

C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup

Hope that helps

I want to give a shoutout for using re module for this. Specially in the case of case sensitivity.

We use the option re.IGNORECASE while compiling the regex for use of in production environments with large amounts of data.

>>> import re
>>> m = ['isalnum','isalpha', 'isdigit', 'islower', 'isspace', 'istitle', 'isupper', 'ISALNUM', 'ISALPHA', 'ISDIGIT', 'ISLOWER', 'ISSPACE', 'ISTITLE', 'ISUPPER']
>>>
>>>
>>> pattern = re.compile('is')
>>>
>>> [word for word in m if pattern.match(word)]
['isalnum', 'isalpha', 'isdigit', 'islower', 'isspace', 'istitle', 'isupper']

However try to always use the in operator for string comparison as detailed in this post

faster-operation-re-match-or-str

Also detailed in the one of the best books to start learning python with

idiomatic-python

If you have installed GitHubDesktop in Windows 10, then press Ctrl + '. or in the menu go to Repository>Open in command prompt.

In case git is not installed in your machine, you should get a prompt to install git.(I came to know from this that GitHubDesktop and git are different applications). Install git, close your command prompt and open it again.

You can test your installation by typing in git at the command prompt.

99% of the time I would use XMLHttpRequest or fetch for something like this. However, there's an alternative solution which doesn't require javascript...

You could include a hidden iframe on your page and set the target attribute of your form to point to that iframe.

<style>
  .hide { position:absolute; top:-1px; left:-1px; width:1px; height:1px; }
</style>

<iframe name="hiddenFrame" class="hide"></iframe>

<form action="receiver.pl" method="post" target="hiddenFrame">
  <input name="signed" type="checkbox">
  <input value="Save" type="submit">
</form>

There are very few scenarios where I would choose this route. Generally handling it with javascript is better because, with javascript you can...

• gracefully handle errors (e.g. retry)
• provide UI indicators (e.g. loading, processing, success, failure)
• run logic before the request is sent, or run logic after the response is received.

Just for the record in history!

I've come up with a solution for my own work from 5-6 years ago, which is Gradext ( pure javascript and pure css, no dependency ) .

The technical explanation is you can create an element like this:

<span>A</span>

now if you want to make a gradient on text, you need to create some multiple layers, each individually specifically colored and the spectrum created will illustrate the gradient effect.

for example look at this is the word lorem inside of a <span> and will cause a horizontal gradient effect ( check the examples ):

 <span data-i="0" style="color: rgb(153, 51, 34);">L</span>
 <span data-i="1" style="color: rgb(154, 52, 35);">o</span>
 <span data-i="2" style="color: rgb(155, 53, 36);">r</span>
 <span data-i="3" style="color: rgb(156, 55, 38);">e</span>
 <span data-i="4" style="color: rgb(157, 56, 39);">m</span>

and you can continue doing this pattern for a long time and long paragraph as well.

But!

What if you want to create a vertical gradient effect on texts?

Then there's another solution which could be helpful. I will describe in details.

Assuming our first <span> again. but the content shouldn't be the letters individually; the content should be the whole text, and now we're going to copy the same ??<span> again and again ( count of spans will define the quality of your gradient, more span, better result, but poor performance ). have a look at this:

<span data-i="6" style="color: rgb(81, 165, 39); overflow: hidden; height: 11.2px;">Lorem ipsum dolor sit amet, tincidunt ut laoreet dolore magna aliquam erat volutpat.</span>
<span data-i="7" style="color: rgb(89, 174, 48); overflow: hidden; height: 12.8px;">Lorem ipsum dolor sit amet, tincidunt ut laoreet dolore magna aliquam erat volutpat.</span>
<span data-i="8" style="color: rgb(97, 183, 58); overflow: hidden; height: 14.4px;">Lorem ipsum dolor sit amet, tincidunt ut laoreet dolore magna aliquam erat volutpat.</span>
<span data-i="9" style="color: rgb(105, 192, 68); overflow: hidden; height: 16px;">Lorem ipsum dolor sit amet, tincidunt ut laoreet dolore magna aliquam erat volutpat.</span>
<span data-i="10" style="color: rgb(113, 201, 78); overflow: hidden; height: 17.6px;">Lorem ipsum dolor sit amet, tincidunt ut laoreet dolore magna aliquam erat volutpat.</span>
<span data-i="11" style="color: rgb(121, 210, 88); overflow: hidden; height: 19.2px;">Lorem ipsum dolor sit amet, tincidunt ut laoreet dolore magna aliquam erat volutpat.</span>

Again, But!

what if you want to make these gradient effects to move and create an animation out of it?

well, there's another solution for it too. You should definitely check animation: true or even .hoverable() method which will lead to a gradient to start based on cursor position! ( sounds cool xD )

this is simply how we're creating gradients ( linear or radial ) on texts. If you liked the idea or want to know more about it, you should check the links provided.

Maybe this is not the best option, maybe not the best performant way to do this, but it will open up some space to create exciting and delightful animations to inspire some other people for a better solution.

It will allow you to use gradient style on texts, which is supported by even IE8!

Here you can find a working live demo and the original repository is here on GitHub as well, open source and ready to get some updates ( :D )

This is my first time ( yeah, after 5 years, you've heard it right ) to mention this repository anywhere on the Internet, and I'm excited about that!

[Update - 2019 August:] Github removed github-pages demo of that repository because I'm from Iran! Only the source code is available here tho...

I found a fix that while it's not actually using ajax it does allow you to use a javascript call to request the download and then get a callback when the download actually starts. I found this helpful if the link runs a server side script that takes a little bit to compose the file before sending it. so you can alert them that it's processing, and then when it does finally send the file remove that processing notification. which is why I wanted to try to load the file via ajax to begin with so that I could have an event happen when the file is requested and another when it actually starts downloading.

the js on the front page

function expdone()
{
    document.getElementById('exportdiv').style.display='none';
}
function expgo()
{
   document.getElementById('exportdiv').style.display='block';
   document.getElementById('exportif').src='test2.php?arguments=data';
}

the iframe

<div id="exportdiv" style="display:none;">
<img src="loader.gif"><br><h1>Generating Report</h1>
<iframe id="exportif" src="" style="width: 1px;height: 1px; border:0px;"></iframe>
</div>

then the other file:

<!DOCTYPE html>
<html>
<head>
<script>
function expdone()
{
    window.parent.expdone();
}
</script>
</head>
<body>
<iframe id="exportif" src="<?php echo "http://10.192.37.211/npdtracker/exportthismonth.php?arguments=".$_GET["arguments"]; ?>"></iframe>
<script>document.getElementById('exportif').onload= expdone;</script>
</body></html>

I think there's a way to read get data using js so then no php would be needed. but I don't know it off hand and the server I'm using supports php so this works for me. thought I'd share it in case it helps anyone.

This is whole story how date problem was and how Big DBMSs handled these problems.

During the period between 1 A.D. and today, the Western world has actually used two main calendars: the Julian calendar of Julius Caesar and the Gregorian calendar of Pope Gregory XIII. The two calendars differ with respect to only one rule: the rule for deciding what a leap year is. In the Julian calendar, all years divisible by four are leap years. In the Gregorian calendar, all years divisible by four are leap years, except that years divisible by 100 (but not divisible by 400) are not leap years. Thus, the years 1700, 1800, and 1900 are leap years in the Julian calendar but not in the Gregorian calendar, while the years 1600 and 2000 are leap years in both calendars.

When Pope Gregory XIII introduced his calendar in 1582, he also directed that the days between October 4, 1582, and October 15, 1582, should be skipped—that is, he said that the day after October 4 should be October 15. Many countries delayed changing over, though. England and her colonies didn't switch from Julian to Gregorian reckoning until 1752, so for them, the skipped dates were between September 4 and September 14, 1752. Other countries switched at other times, but 1582 and 1752 are the relevant dates for the DBMSs that we're discussing.

Thus, two problems arise with date arithmetic when one goes back many years. The first is, should leap years before the switch be calculated according to the Julian or the Gregorian rules? The second problem is, when and how should the skipped days be handled?

This is how the Big DBMSs handle these questions:

• Pretend there was no switch. This is what the SQL Standard seems to require, although the standard document is unclear: It just says that dates are "constrained by the natural rules for dates using the Gregorian calendar"—whatever "natural rules" are. This is the option that DB2 chose. When there is a pretence that a single calendar's rules have always applied even to times when nobody heard of the calendar, the technical term is that a "proleptic" calendar is in force. So, for example, we could say that DB2 follows a proleptic Gregorian calendar.
• Avoid the problem entirely. Microsoft and Sybase set their minimum date values at January 1, 1753, safely past the time that America switched calendars. This is defendable, but from time to time complaints surface that these two DBMSs lack a useful functionality that the other DBMSs have and that the SQL Standard requires.
• Pick 1582. This is what Oracle did. An Oracle user would find that the date-arithmetic expression October 15 1582 minus October 4 1582 yields a value of 1 day (because October 5–14 don't exist) and that the date February 29 1300 is valid (because the Julian leap-year rule applies). Why did Oracle go to extra trouble when the SQL Standard doesn't seem to require it? The answer is that users might require it. Historians and astronomers use this hybrid system instead of a proleptic Gregorian calendar. (This is also the default option that Sun picked when implementing the GregorianCalendar class for Java—despite the name, GregorianCalendar is a hybrid calendar.)

Source 1 and 2

from ..subpkg2 import mod

Per the Python docs: When inside a package hierarchy, use two dots, as the import statement doc says:

When specifying what module to import you do not have to specify the absolute name of the module. When a module or package is contained within another package it is possible to make a relative import within the same top package without having to mention the package name. By using leading dots in the specified module or package after from you can specify how high to traverse up the current package hierarchy without specifying exact names. One leading dot means the current package where the module making the import exists. Two dots means up one package level. Three dots is up two levels, etc. So if you execute from . import mod from a module in the pkg package then you will end up importing pkg.mod. If you execute from ..subpkg2 import mod from within pkg.subpkg1 you will import pkg.subpkg2.mod. The specification for relative imports is contained within PEP 328.

PEP 328 deals with absolute/relative imports.

>>> source_list = ('1','a'),('2','b'),('3','c'),('4','d')
>>> list1, list2 = zip(*source_list)
>>> list1
('1', '2', '3', '4')
>>> list2
('a', 'b', 'c', 'd')

Edit: Note that zip(*iterable) is its own inverse:

>>> list(source_list) == zip(*zip(*source_list))
True

When unpacking into two lists, this becomes:

>>> list1, list2 = zip(*source_list)
>>> list(source_list) == zip(list1, list2)
True

Addition suggested by rocksportrocker.

had the same problem, according to the MySQL documentation, you can select a Substring of a BLOB:

SELECT id, SUBSTRING(comment,1,2000) FROM t

HTH, glissi

Also, I noticed one more difference between .load and .ready. I am opening a child window and I am performing some work when child window opens. .load is called only first time when I open the window and if I don't close the window then .load will not be called again. however, .ready is called every time irrespective of close the child window or not.

you can use index and columns attributes of pandas.DataFrame. NOTE: number of elements of list must match the number of rows/columns.

#       A   B   C
# ONE   11  12  13
# TWO   21  22  23
# THREE 31  32  33

df.index = [1, 2, 3]
df.columns = ['a', 'b', 'c']
print(df)

#     a   b   c
# 1  11  12  13
# 2  21  22  23
# 3  31  32  33

I assume I have import datetime before running each of the lines of code below

datetime.datetime.strptime("2013-1-25", '%Y-%m-%d').strftime('%m/%d/%y')

prints "01/25/13".

If you can't live with the leading zero, try this:

dt = datetime.datetime.strptime("2013-1-25", '%Y-%m-%d')
print '{0}/{1}/{2:02}'.format(dt.month, dt.day, dt.year % 100)

This prints "1/25/13".

EDIT: This may not work on every platform:

datetime.datetime.strptime("2013-1-25", '%Y-%m-%d').strftime('%m/%d/%y')

step 1: Enter into the MongoDB shell.

mongo

step 2: for the display all the databases.

show dbs;

step 3: for a select database :

use 'databases_name'

step 4: for statistics of your database.

db.stats()

step 5: listing out all the collections(tables).

show collections

step 6:print the data from a particular collection.

db.'collection_name'.find().pretty()

If you don't mind importing the sklearn library, I would recommend the method talked on this blog.

import pandas as pd
from sklearn import preprocessing

data = {'score': [234,24,14,27,-74,46,73,-18,59,160]}
cols = data.columns
df = pd.DataFrame(data)
df

min_max_scaler = preprocessing.MinMaxScaler()
np_scaled = min_max_scaler.fit_transform(df)
df_normalized = pd.DataFrame(np_scaled, columns = cols)
df_normalized

I am using Laravel 5.5.14 and none of the above worked for me. So here are the steps I did to make it work.

1.Install font-awesome by using npm:

   npm install font-awesome --save

2.Move the fonts to your public directory by adding this line in your webpack.mixin.js

mix.copyDirectory('node_modules/font-awesome/fonts', 'public/fonts/font-awesome');

3.Open your app.scss to specify the path of the fonts in your node_modules and which relative path to use for compilation:

$fa-font-path: "../fonts/font-awesome" !default;
@import "~font-awesome/scss/font-awesome.scss";

What you're describing is known as flattening a list, and with this new knowledge you'll be able to find many solutions to this on Google (there is no built-in flatten method). Here is one of them, from http://www.daniel-lemire.com/blog/archives/2006/05/10/flattening-lists-in-python/:

def flatten(x):
    flat = True
    ans = []
    for i in x:
        if ( i.__class__ is list):
            ans = flatten(i)
        else:
            ans.append(i)
    return ans

For one more graphical solution, visdat package offers vis_miss.

library(visdat)
vis_miss(airquality)

Very similar to Amelia output with a small difference of giving %s on missings out of the box.

You get the integer limits in <limits.h> or <climits>. Floating point characteristics are defined in <float.h> for C. In C++, the preferred version is usually std::numeric_limits<double>::max() (for which you #include <limits>).

As to your original question, if you want a larger integer type than long, you should probably consider long long. This isn't officially included in C++98 or C++03, but is part of C99 and C++11, so all reasonably current compilers support it.

The use-case for CORS is simple. Imagine the site alice.com has some data that the site bob.com wants to access. This type of request traditionally wouldn’t be allowed under the browser’s same origin policy. However, by supporting CORS requests, alice.com can add a few special response headers that allows bob.com to access the data. In order to understand it well, please visit this nice tutorial.. How to solve the issue of CORS

I wrote my own, it's short, super simple, and you can copy it if you like: http://www.dmurph.com/2011/01/java-uri-encoder/

For the Platform Independent Users or Windows users, what you can do is:

import runtime:

import (
    "runtime"
    "strings"
)

and then trim the string like this:

if runtime.GOOS == "windows" {
  input = strings.TrimRight(input, "\r\n")
} else {
  input = strings.TrimRight(input, "\n")
}

now you can compare it like that:

if strings.Compare(input, "a") == 0 {
  //....yourCode
}

This is a better approach when you're making use of STDIN on multiple platforms.

Explanation

This happens because on windows lines end with "\r\n" which is known as CRLF, but on UNIX lines end with "\n" which is known as LF and that's why we trim "\n" on unix based operating systems while we trim "\r\n" on windows.

The RestTemplate getForObject() method does not support setting headers. The solution is to use the exchange() method.

So instead of restTemplate.getForObject(url, String.class, param) (which has no headers), use

HttpHeaders headers = new HttpHeaders();
headers.set("Header", "value");
headers.set("Other-Header", "othervalue");
...

HttpEntity entity = new HttpEntity(headers);

ResponseEntity<String> response = restTemplate.exchange(
    url, HttpMethod.GET, entity, String.class, param);

Finally, use response.getBody() to get your result.

This question is similar to this question.

There are two obvious points, as well as the points in the other answer:

• They are exactly equivalent when using sub queries:

  SELECT * FROM table
  WHERE column IN(subquery);
  
  SELECT * FROM table
  WHERE column = ANY(subquery);
  

On the other hand:

• Only the IN operator allows a simple list:

  SELECT * FROM table
  WHERE column IN(… , … , …);
  

Presuming they are exactly the same has caught me out several times when forgetting that ANY doesn’t work with lists.

Here's some code I use with sys.version_info to check the Python installation:

def check_installation(rv):
    current_version = sys.version_info
    if current_version[0] == rv[0] and current_version[1] >= rv[1]:
        pass
    else:
        sys.stderr.write( "[%s] - Error: Your Python interpreter must be %d.%d or greater (within major version %d)\n" % (sys.argv[0], rv[0], rv[1], rv[0]) )
        sys.exit(-1)
    return 0

...

# Calling the 'check_installation' function checks if Python is >= 2.7 and < 3
required_version = (2,7)
check_installation(required_version)

You could leverage the html-to-react npm module.

Note: I'm the author of the module and just published it a few hours ago. Please feel free to report any bugs or usability issues.

None of that solved my problem. but what I did was if click on the pom.xml, there is a tab at the bottom named dependencies. in this tab it is split into 2 section, one called dependencies and one called dependency management. select every thing in the dependency section and click add to be under the dependency management control. close and reopen your project.

Class java.sql.TimeStamp extends from java.util.Date.

You can directly assign a TimeStamp object to Date reference:

TimeStamp timeStamp = //whatever value you have;
Date startDate = timestampValue;

When page IsPostback, the following code work correctly. But when page first loading, there is not multiple newline in the textarea. Bug

textBox1.Text = "Line1\r\n\r\n\r\nLine2";

Laravel ^5.6 - Query Scopes

For readability purposes i use query scope, makes my code more declarative.

scope query

namespace App\Models;

use Illuminate\Support\Carbon;
use Illuminate\Database\Eloquent\Model;

class MyModel extends Model
{
    // ...

    /**
     * Scope a query to only include today's entries.
     *
     * @param  \Illuminate\Database\Eloquent\Builder  $query
     * @return \Illuminate\Database\Eloquent\Builder
     */
    public function scopeCreatedToday($query)
    {
        return $query->where('created_at', '>=', Carbon::today());
    }

    // ...
}

example of usage

MyModel::createdToday()->get()

SQL generated

Sql      : select * from "my_models" where "created_at" >= ?

Bindings : ["2019-10-22T00:00:00.000000Z"]

Hope the following description sums it up well:

There are two things to consider here - variables and objects.

1. If you are passing a variable, then it's pass by value, which means the changes made to the variable within the function are local to that function and hence won't be reflected globally. This is more of a 'C' like behavior.

Example:

def changeval( myvar ):
   myvar = 20; 
   print "values inside the function: ", myvar
   return

myvar = 10;
changeval( myvar );
print "values outside the function: ", myvar

O/P:

values inside the function:  20 
values outside the function:  10

2. If you are passing the variables packed inside a mutable object, like a list, then the changes made to the object are reflected globally as long as the object is not re-assigned.

Example:

def changelist( mylist ):
   mylist2=['a'];
   mylist.append(mylist2);
   print "values inside the function: ", mylist
   return

mylist = [1,2,3];
changelist( mylist );
print "values outside the function: ", mylist

O/P:

values inside the function:  [1, 2, 3, ['a']]
values outside the function:  [1, 2, 3, ['a']]

3. Now consider the case where the object is re-assigned. In this case, the object refers to a new memory location which is local to the function in which this happens and hence not reflected globally.

Example:

def changelist( mylist ):
   mylist=['a'];
   print "values inside the function: ", mylist
   return

mylist = [1,2,3];
changelist( mylist );
print "values outside the function: ", mylist

O/P:

values inside the function:  ['a']
values outside the function:  [1, 2, 3]

I also faced this same issue while working in my development environment, the problem was that I left host: localhost commented out in the config/database.yml file.

So my application could not connect to the PostgreSQL database, simply uncommenting it solved the issue.

development:
  <<: *default
  database: database_name

  username: database_username 

  password: database_password

  host: localhost

That's all.

I hope this helps

You could just use normal Python argument passing syntax to specify your crontab. For example, suppose we define an Event class as below:

from datetime import datetime, timedelta
import time

# Some utility classes / functions first
class AllMatch(set):
    """Universal set - match everything"""
    def __contains__(self, item): return True

allMatch = AllMatch()

def conv_to_set(obj):  # Allow single integer to be provided
    if isinstance(obj, (int,long)):
        return set([obj])  # Single item
    if not isinstance(obj, set):
        obj = set(obj)
    return obj

# The actual Event class
class Event(object):
    def __init__(self, action, min=allMatch, hour=allMatch, 
                       day=allMatch, month=allMatch, dow=allMatch, 
                       args=(), kwargs={}):
        self.mins = conv_to_set(min)
        self.hours= conv_to_set(hour)
        self.days = conv_to_set(day)
        self.months = conv_to_set(month)
        self.dow = conv_to_set(dow)
        self.action = action
        self.args = args
        self.kwargs = kwargs

    def matchtime(self, t):
        """Return True if this event should trigger at the specified datetime"""
        return ((t.minute     in self.mins) and
                (t.hour       in self.hours) and
                (t.day        in self.days) and
                (t.month      in self.months) and
                (t.weekday()  in self.dow))

    def check(self, t):
        if self.matchtime(t):
            self.action(*self.args, **self.kwargs)

(Note: Not thoroughly tested)

Then your CronTab can be specified in normal python syntax as:

c = CronTab(
  Event(perform_backup, 0, 2, dow=6 ),
  Event(purge_temps, 0, range(9,18,2), dow=range(0,5))
)

This way you get the full power of Python's argument mechanics (mixing positional and keyword args, and can use symbolic names for names of weeks and months)

The CronTab class would be defined as simply sleeping in minute increments, and calling check() on each event. (There are probably some subtleties with daylight savings time / timezones to be wary of though). Here's a quick implementation:

class CronTab(object):
    def __init__(self, *events):
        self.events = events

    def run(self):
        t=datetime(*datetime.now().timetuple()[:5])
        while 1:
            for e in self.events:
                e.check(t)

            t += timedelta(minutes=1)
            while datetime.now() < t:
                time.sleep((t - datetime.now()).seconds)

A few things to note: Python's weekdays / months are zero indexed (unlike cron), and that range excludes the last element, hence syntax like "1-5" becomes range(0,5) - ie [0,1,2,3,4]. If you prefer cron syntax, parsing it shouldn't be too difficult however.

It works on ubuntu 16.04. Step 1:

 sudo gedit /home/user_name/.local/bin/pip

a file opens with the content:

#!/usr/bin/python

# -*- coding: utf-8 -*-
import re
import sys

from pip import main

if __name__ == '__main__':
    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
    sys.exit(main())

Change the main to __main__ as it appears below:

#!/usr/bin/python

# -*- coding: utf-8 -*-
import re
import sys

from pip import __main__

if __name__ == '__main__':
    sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
    sys.exit(__main__._main())

Save the file and close it. And you are done!

Is there any way to make a text box fill the width of its container without expanding beyond it?

Yes: by using the CSS3 property ‘box-sizing: border-box’, you can redefine what ‘width’ means to include the external padding and border.

Unfortunately because it's CSS3, support isn't very mature, and as the spec process isn't finished yet, it has different temporary names in browsers in the meantime. So:

input.wide {
    width: 100%;
    box-sizing: border-box;
    -moz-box-sizing: border-box;
    -webkit-box-sizing: border-box;
}

The old-school alternative is simply to put a quantity of ‘padding-right’ on the enclosing <div> or <td> element equal to about how much extra left-and-right padding/border in ‘px’ you think browsers will give the input. (Typically 6px for IE<8.)

This is a variable jQuery uses internally, but had no reason to hide, so it's there to use. Just a heads up, it becomes jquery.ajax.active next release. There's no documentation because it's exposed but not in the official API, lots of things are like this actually, like jQuery.cache (where all of jQuery.data() goes).

I'm guessing here by actual usage in the library, it seems to be there exclusively to support $.ajaxStart() and $.ajaxStop() (which I'll explain further), but they only care if it's 0 or not when a request starts or stops. But, since there's no reason to hide it, it's exposed to you can see the actual number of simultaneous AJAX requests currently going on.

When jQuery starts an AJAX request, this happens:

if ( s.global && ! jQuery.active++ ) {
  jQuery.event.trigger( "ajaxStart" );
}

This is what causes the $.ajaxStart() event to fire, the number of connections just went from 0 to 1 (jQuery.active++ isn't 0 after this one, and !0 == true), this means the first of the current simultaneous requests started. The same thing happens at the other end. When an AJAX request stops (because of a beforeSend abort via return false or an ajax call complete function runs):

if ( s.global && ! --jQuery.active ) {
  jQuery.event.trigger( "ajaxStop" );
}

This is what causes the $.ajaxStop() event to fire, the number of requests went down to 0, meaning the last simultaneous AJAX call finished. The other global AJAX handlers fire in there along the way as well.

With Java 8 we can handle this scenario without any external tools. javapackager tool coming with java 8 provides an option to create self contained application bundles:

-native type Generate self-contained application bundles (if possible). Use the -B option to provide arguments to the bundlers being used. If type is specified, then only a bundle of this type is created. If no type is specified, all is used.

The following values are valid for type:

-native type
Generate self-contained application bundles (if possible). Use the -B option to provide arguments to the bundlers being used. If type is specified, then only a bundle of this type is created. If no type is specified, all is used.

The following values are valid for type:

all: Runs all of the installers for the platform on which it is running, and creates a disk image for the application. This value is used if type is not specified.
installer: Runs all of the installers for the platform on which it is running.
image: Creates a disk image for the application. On OS X, the image is the .app file. On Linux, the image is the directory that gets installed.
dmg: Generates a DMG file for OS X.
pkg: Generates a .pkg package for OS X.
mac.appStore: Generates a package for the Mac App Store.
rpm: Generates an RPM package for Linux.
deb: Generates a Debian package for Linux.

In case of windows refer the following doc we can create msi or exe as needed.

exe: Generates a Windows .exe package.
msi: Generates a Windows Installer package.

The pandas.DataFrame.dropna function removes missing values (e.g. NaN, NaT).

For example the following code would remove any columns from your dataframe, where all of the elements of that column are missing.

df.dropna(how='all', axis='columns')

I would do this the other way round.

In the OnLoad event for your Main form show the Logon form as a dialog. If the dialog result of that is OK then allow Main to continue loading, if the result is authentication failure then abort the load and show the message box.

EDIT Code sample(s)

private void MainForm_Load(object sender, EventArgs e)
{
    this.Hide();

    LogonForm logon = new LogonForm();

    if (logon.ShowDialog() != DialogResult.OK)
    {
        //Handle authentication failures as necessary, for example:
        Application.Exit();
    }
    else
    {
        this.Show();
    }
}

Another solution would be to show the LogonForm from the Main method in program.cs, something like this:

static void Main()
{
    Application.EnableVisualStyles();
    Application.SetCompatibleTextRenderingDefault(false);

    LogonForm logon = new LogonForm();

    Application.Run(logon);

    if (logon.LogonSuccessful)
    {
        Application.Run(new MainForm());
    }
}

In this example your LogonForm would have to expose out a LogonSuccessful bool property that is set to true when the user has entered valid credentials

To emphasize a point made by @MatteoItalia, the efficiency difference is where the data is stored. Heap memory (required with vector) requires a call to the system to allocate memory and this can be expensive if you are counting cycles. Stack memory (possible for array) is virtually "zero-overhead" in terms of time, because the memory is allocated by just adjusting the stack pointer and it is done just once on entry to a function. The stack also avoids memory fragmentation. To be sure, std::array won't always be on the stack; it depends on where you allocate it, but it will still involve one less memory allocation from the heap compared to vector. If you have a

• small "array" (under 100 elements say) - (a typical stack is about 8MB, so don't allocate more than a few KB on the stack or less if your code is recursive)
• the size will be fixed
• the lifetime is in the function scope (or is a member value with the same lifetime as the parent class)
• you are counting cycles,

definitely use a std::array over a vector. If any of those requirements is not true, then use a std::vector.

I know this is really old, but I'm posting my solution anyways since google finds this thread.

background-image: url('./imagefolder/image.jpg');

That is what I do. Two dots means drill back one directory closer to root ".." while one "." should mean start where you are at as if it were root. I was having similar issues but adding that fixed it for me. You can even leave the "." in it when uploading to your host because it should work fine so long as your directory setup is exactly the same.

The code date.to_time.to_i should work fine. The Rails console session below shows an example:

>> Date.new(2009,11,26).to_time
=> Thu Nov 26 00:00:00 -0800 2009
>> Date.new(2009,11,26).to_time.to_i
=> 1259222400
>> Time.at(1259222400)
=> Thu Nov 26 00:00:00 -0800 2009

Note that the intermediate DateTime object is in local time, so the timestamp might be a several hours off from what you expect. If you want to work in UTC time, you can use the DateTime's method "to_utc".

I have discovered that NotePad++ now also creates a subfolder at the file location, called nppBackup. So if your file lived in a folder called c:/thisfolder have a look to see if there's a folder called c:/thisfolder/nppBackup.

Occasionally I couldn't find the backup in AppData\Roaming\Notepad++\backup, but I found it in nppBackup.

The question asks to use datetime specifically.

This is a way that uses datetime only:

year = datetime.now().year
month = datetime.now().month

mysql -u user -h 192.168.1.2 -p

This should be enough for connection to MySQL server. Please, check the firewall of 192.168.1.2 if remote connection to MySQL server is enabled.

Regards

If you want multiple messages from a queue, say 10 messages, the command to use is:

rabbitmqadmin get queue=<QueueName> ackmode=ack_requeue_true count=10

If you don't want the messages requeued, just change ackmode to ack_requeue_false.

Dict.updateValue updates value for existing key from dictionary or adds new new key-value pair if key does not exists.

Example-

var caseStatusParams: [String: AnyObject] = ["userId" : UserDefault.userID ]
caseStatusParams.updateValue("Hello" as AnyObject, forKey: "otherNotes")

Result-

?  : 2 elements
    - key : "userId"
    - value : 866
?  : 2 elements
    - key : "otherNotes"
    - value : "Hello"

In your example, there will be no difference, since both statements appear at the end of the loop. pass is simply a placeholder, in that it does nothing (it passes execution to the next statement). continue, on the other hand, has a definite purpose: it tells the loop to continue as if it had just restarted.

for element in some_list:
    if not element:
        pass
    print element  

is very different from

for element in some_list:
    if not element:
        continue
    print element

You can also install Git Credential Manager for Windows to save Git passwords in Windows credentials manager instead of _netrc. This is a more secure way to store passwords.

For whatever reason $('.panel-collapse').collapse({'toggle': true, 'parent': '#accordion'}); only seems to work the first time and it only works to expand the collapsible. (I tried to start with a expanded collapsible and it wouldn't collapse.)

It could just be something that runs once the first time you initialize collapse with those parameters.

You will have more luck using the show and hide methods.

Here is an example:

$(function() {

  var $active = true;

  $('.panel-title > a').click(function(e) {
    e.preventDefault();
  });

  $('.collapse-init').on('click', function() {
    if(!$active) {
      $active = true;
      $('.panel-title > a').attr('data-toggle', 'collapse');
      $('.panel-collapse').collapse('hide');
      $(this).html('Click to disable accordion behavior');
    } else {
      $active = false;
      $('.panel-collapse').collapse('show');
      $('.panel-title > a').attr('data-toggle','');
      $(this).html('Click to enable accordion behavior');
    }
  });

});

http://bootply.com/98201

Update

Granted KyleMit seems to have a way better handle on this then me. I'm impressed with his answer and understanding.

I don't understand what's going on or why the show seemed to be toggling in some places.

But After messing around for a while.. Finally came with the following solution:

$(function() {
  var transition = false;
  var $active = true;

  $('.panel-title > a').click(function(e) {
    e.preventDefault();
  });

  $('#accordion').on('show.bs.collapse',function(){
    if($active){
        $('#accordion .in').collapse('hide');
    }
  });

  $('#accordion').on('hidden.bs.collapse',function(){
    if(transition){
        transition = false;
        $('.panel-collapse').collapse('show');
    }
  });

  $('.collapse-init').on('click', function() {
    $('.collapse-init').prop('disabled','true');
    if(!$active) {
      $active = true;
      $('.panel-title > a').attr('data-toggle', 'collapse');
      $('.panel-collapse').collapse('hide');
      $(this).html('Click to disable accordion behavior');
    } else {
      $active = false;
      if($('.panel-collapse.in').length){
        transition = true;
        $('.panel-collapse.in').collapse('hide');       
      }
      else{
        $('.panel-collapse').collapse('show');
      }
      $('.panel-title > a').attr('data-toggle','');
      $(this).html('Click to enable accordion behavior');
    }
    setTimeout(function(){
        $('.collapse-init').prop('disabled','');
    },800);
  });
});

http://bootply.com/98239

If you want this behaviour everywhere in your app and don't want to add anything to individual viewDidAppear etc. then you should create a subclass

class QFNavigationController:UINavigationController, UIGestureRecognizerDelegate, UINavigationControllerDelegate{
    override func viewDidLoad() {
        super.viewDidLoad()
        interactivePopGestureRecognizer?.delegate = self
        delegate = self
    }

    override func pushViewController(_ viewController: UIViewController, animated: Bool) {
        super.pushViewController(viewController, animated: animated)
        interactivePopGestureRecognizer?.isEnabled = false
    }

    func navigationController(_ navigationController: UINavigationController, didShow viewController: UIViewController, animated: Bool) {
        interactivePopGestureRecognizer?.isEnabled = true
    }

    // IMPORTANT: without this if you attempt swipe on
    // first view controller you may be unable to push the next one
    func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
        return viewControllers.count > 1
    }

}

Now, whenever you use QFNavigationController you get the desired experience.

You should have if row[2] != "0". Otherwise it's not checking to see if the string value is equal to 0.

You can use Named Sections.

_Layout.cshtml

<head>
    <script type="text/javascript" src="@Url.Content("/Scripts/jquery-1.6.2.min.js")"></script>
    @RenderSection("JavaScript", required: false)
</head>

_SomeView.cshtml

@section JavaScript
{
   <script type="text/javascript" src="@Url.Content("/Scripts/SomeScript.js")"></script>
   <script type="text/javascript" src="@Url.Content("/Scripts/AnotherScript.js")"></script>
}

assertTrue()/assertFalse() : to use only to assert boolean result returned

assertTrue(Iterables.elementsEqual(argumentComponents, returnedComponents));

You want to use Assert.assertTrue() or Assert.assertFalse() as the method under test returns a boolean value.
As the method returns a specific thing such as a List that should contain some expected elements, asserting with assertTrue() in this way : Assert.assertTrue(myActualList.containsAll(myExpectedList) is an anti pattern.
It makes the assertion easy to write but as the test fails, it also makes it hard to debug because the test runner will only say to you something like :

expected true but actual is false

Assert.assertEquals(Object, Object) in JUnit4 or Assertions.assertIterableEquals(Iterable, Iterable) in JUnit 5 : to use only as both equals() and toString() are overrided for the classes (and deeply) of the compared objects

It matters because the equality test in the assertion relies on equals() and the test failure message relies on toString() of the compared objects.
As String overrides both equals() and toString(), it is perfectly valid to assert the List<String> with assertEquals(Object,Object). And about this matter : you have to override equals() in a class because it makes sense in terms of object equality, not only to make assertions easier in a test with JUnit.
To make assertions easier you have other ways (that you can see in the next points of the answer).

Is Guava a way to perform/build unit test assertions ?

Is Google Guava Iterables.elementsEqual() the best way, provided I have the library in my build path, to compare those two lists?

No it is not. Guava is not an library to write unit test assertions.
You don't need it to write most (all I think) of unit tests.

What's the canonical way to compare lists for unit tests?

As a good practice I favor assertion/matcher libraries.

I cannot encourage JUnit to perform specific assertions because this provides really too few and limited features : it performs only an assertion with a deep equals.
Sometimes you want to allow any order in the elements, sometimes you want to allow that any elements of the expected match with the actual, and so for...

So using a unit test assertion/matcher library such as Hamcrest or AssertJ is the correct way.
The actual answer provides a Hamcrest solution. Here is a AssertJ solution.

org.assertj.core.api.ListAssert.containsExactly() is what you need : it verifies that the actual group contains exactly the given values and nothing else, in order as stated :

Verifies that the actual group contains exactly the given values and nothing else, in order.

Your test could look like :

import org.assertj.core.api.Assertions;
import org.junit.jupiter.api.Test;

@Test
void ofComponent_AssertJ() throws Exception {
   MyObject myObject = MyObject.ofComponents("One", "Two", "Three");
   Assertions.assertThat(myObject.getComponents())
             .containsExactly("One", "Two", "Three");
}

A AssertJ good point is that declaring a List as expected is needless : it makes the assertion straighter and the code more readable :

Assertions.assertThat(myObject.getComponents())
         .containsExactly("One", "Two", "Three");

And if the test fails :

// Fail : Three was not expected 
Assertions.assertThat(myObject.getComponents())
          .containsExactly("One", "Two");

you get a very clear message such as :

java.lang.AssertionError:

Expecting:

<["One", "Two", "Three"]>

to contain exactly (and in same order):

<["One", "Two"]>

but some elements were not expected:

<["Three"]>

Assertion/matcher libraries are a must because these will really further

Suppose that MyObject doesn't store Strings but Foos instances such as :

public class MyFooObject {

    private List<Foo> values;
    @SafeVarargs
    public static MyFooObject ofComponents(Foo... values) {
        // ...
    }

    public List<Foo> getComponents(){
        return new ArrayList<>(values);
    }
}

That is a very common need. With AssertJ the assertion is still simple to write. Better you can assert that the list content are equal even if the class of the elements doesn't override equals()/hashCode() while JUnit ways require that :

import org.assertj.core.api.Assertions;
import static org.assertj.core.groups.Tuple.tuple;
import org.junit.jupiter.api.Test;

@Test
void ofComponent() throws Exception {
    MyFooObject myObject = MyFooObject.ofComponents(new Foo(1, "One"), new Foo(2, "Two"), new Foo(3, "Three"));

    Assertions.assertThat(myObject.getComponents())
              .extracting(Foo::getId, Foo::getName)
              .containsExactly(tuple(1, "One"),
                               tuple(2, "Two"),
                               tuple(3, "Three"));
}

In my case, I am using another function.

Function

 function openTab() {
    window.open('https://play.google.com/store/apps/details?id=com.drishya');
  }

  <Link onClick={openTab}></Link>

TL;DR

SELECT json_agg(t) FROM t

for a JSON array of objects, and

SELECT
    json_build_object(
        'a', json_agg(t.a),
        'b', json_agg(t.b)
    )
FROM t

for a JSON object of arrays.

List of objects

This section describes how to generate a JSON array of objects, with each row being converted to a single object. The result looks like this:

[{"a":1,"b":"value1"},{"a":2,"b":"value2"},{"a":3,"b":"value3"}]

9.3 and up

The json_agg function produces this result out of the box. It automatically figures out how to convert its input into JSON and aggregates it into an array.

SELECT json_agg(t) FROM t

There is no jsonb (introduced in 9.4) version of json_agg. You can either aggregate the rows into an array and then convert them:

SELECT to_jsonb(array_agg(t)) FROM t

or combine json_agg with a cast:

SELECT json_agg(t)::jsonb FROM t

My testing suggests that aggregating them into an array first is a little faster. I suspect that this is because the cast has to parse the entire JSON result.

9.2

9.2 does not have the json_agg or to_json functions, so you need to use the older array_to_json:

SELECT array_to_json(array_agg(t)) FROM t

You can optionally include a row_to_json call in the query:

SELECT array_to_json(array_agg(row_to_json(t))) FROM t

This converts each row to a JSON object, aggregates the JSON objects as an array, and then converts the array to a JSON array.

I wasn't able to discern any significant performance difference between the two.

Object of lists

This section describes how to generate a JSON object, with each key being a column in the table and each value being an array of the values of the column. It's the result that looks like this:

{"a":[1,2,3], "b":["value1","value2","value3"]}

9.5 and up

We can leverage the json_build_object function:

SELECT
    json_build_object(
        'a', json_agg(t.a),
        'b', json_agg(t.b)
    )
FROM t

You can also aggregate the columns, creating a single row, and then convert that into an object:

SELECT to_json(r)
FROM (
    SELECT
        json_agg(t.a) AS a,
        json_agg(t.b) AS b
    FROM t
) r

Note that aliasing the arrays is absolutely required to ensure that the object has the desired names.

Which one is clearer is a matter of opinion. If using the json_build_object function, I highly recommend putting one key/value pair on a line to improve readability.

You could also use array_agg in place of json_agg, but my testing indicates that json_agg is slightly faster.

There is no jsonb version of the json_build_object function. You can aggregate into a single row and convert:

SELECT to_jsonb(r)
FROM (
    SELECT
        array_agg(t.a) AS a,
        array_agg(t.b) AS b
    FROM t
) r

Unlike the other queries for this kind of result, array_agg seems to be a little faster when using to_jsonb. I suspect this is due to overhead parsing and validating the JSON result of json_agg.

Or you can use an explicit cast:

SELECT
    json_build_object(
        'a', json_agg(t.a),
        'b', json_agg(t.b)
    )::jsonb
FROM t

The to_jsonb version allows you to avoid the cast and is faster, according to my testing; again, I suspect this is due to overhead of parsing and validating the result.

9.4 and 9.3

The json_build_object function was new to 9.5, so you have to aggregate and convert to an object in previous versions:

SELECT to_json(r)
FROM (
    SELECT
        json_agg(t.a) AS a,
        json_agg(t.b) AS b
    FROM t
) r

or

SELECT to_jsonb(r)
FROM (
    SELECT
        array_agg(t.a) AS a,
        array_agg(t.b) AS b
    FROM t
) r

depending on whether you want json or jsonb.

(9.3 does not have jsonb.)

9.2

In 9.2, not even to_json exists. You must use row_to_json:

SELECT row_to_json(r)
FROM (
    SELECT
        array_agg(t.a) AS a,
        array_agg(t.b) AS b
    FROM t
) r

Documentation

Find the documentation for the JSON functions in JSON functions.

json_agg is on the aggregate functions page.

Design

If performance is important, ensure you benchmark your queries against your own schema and data, rather than trust my testing.

Whether it's a good design or not really depends on your specific application. In terms of maintainability, I don't see any particular problem. It simplifies your app code and means there's less to maintain in that portion of the app. If PG can give you exactly the result you need out of the box, the only reason I can think of to not use it would be performance considerations. Don't reinvent the wheel and all.

Nulls

Aggregate functions typically give back NULL when they operate over zero rows. If this is a possibility, you might want to use COALESCE to avoid them. A couple of examples:

SELECT COALESCE(json_agg(t), '[]'::json) FROM t

Or

SELECT to_jsonb(COALESCE(array_agg(t), ARRAY[]::t[])) FROM t

_{Credit to Hannes Landeholm for pointing this out}

Firstly, the Django docs strongly recommend not using NULL values for string-based fields such as CharField or TextField. Read the documentation for the explanation:

https://docs.djangoproject.com/en/dev/ref/models/fields/#null

Solution: You can also chain together methods on QuerySets, I think. Try this:

Name.objects.exclude(alias__isnull=True).exclude(alias="")

That should give you the set you're looking for.

This needs clarification. Is your server handling a POST that you want to redirect somewhere else? Or are you wanting to redirect a regulatr GET request to another page that is expecting a POST?

In either case what you can do is something like this:

var f = $('<form>');
$('<input>').attr('name', '...').attr('value', '...');
//after all fields are added
f.submit();

It's probably a good idea to make a link that says "click here if not automatically redirected" to deal with pop-up blockers.

Adding to some great answers above, in a case where you using multi-forms and the element NAME is what you want to target.

$('textarea[name=ExampleMessageElName]').val('Some Message here');

Most people already tried to answer your questions.
If you are still debugging, have you thought about using:

Double.TryParse(String, Double);

This will help you in determining what is wrong in each of the string first before you do the actual parsing.
If you have a culture-related problem, you might consider using:

Double.TryParse(String, NumberStyles, IFormatProvider, Double);

This http://msdn.microsoft.com/en-us/library/system.double.tryparse.aspx has a really good example on how to use them.

If you need a long, Int64.TryParse is also available: http://msdn.microsoft.com/en-us/library/system.int64.tryparse.aspx

Hope that helps.

I know that this is a old question. But I think I have a good solution.

$date = "2016-02-21";
$format = "Y-m-d";

if(date($format, strtotime($date)) == date($date)) {
    echo "true";
} else {
    echo "false";
}

You can try it. If you change the date to 21.02.2016 the echo is false. And if you change the format after that to d.m.Y the echo is true.

With this easy code you should be able to check which date-format is used without checking it by the regex.

Maybe there is a person who will test it on every case. But I think my idea is generally valid. For me it seems logical.

@GET does support List of Strings

Setup:
Java : 1.7
Jersey version : 1.9

Resource

@Path("/v1/test")

Subresource:

// receive List of Strings
@GET
@Path("/receiveListOfStrings")
public Response receiveListOfStrings(@QueryParam("list") final List<String> list){
    log.info("receieved list of size="+list.size());
    return Response.ok().build();
}

Jersey testcase

@Test
public void testReceiveListOfStrings() throws Exception {
    WebResource webResource = resource();
    ClientResponse responseMsg = webResource.path("/v1/test/receiveListOfStrings")
            .queryParam("list", "one")
            .queryParam("list", "two")
            .queryParam("list", "three")
            .get(ClientResponse.class);
    Assert.assertEquals(200, responseMsg.getStatus());
}

Don't define variables in headers. Put declarations in header and definitions in one of the .c files.

In config.h

extern const char *names[];

In some .c file:

const char *names[] =
    {
        "brian", "stefan", "steve"
    };

If you put a definition of a global variable in a header file, then this definition will go to every .c file that includes this header, and you will get multiple definition error because a varible may be declared multiple times but can be defined only once.

First, some similarities that have not been mentioned yet. Ruby supports open classes, but modules as open too. After all, Class inherits from Module in the Class inheritance chain and so Class and Module do have some similar behavior.

But you need to ask yourself what is the purpose of having both a Class and a Module in a programming language? A class is intended to be a blueprint for creating instances, and each instance is a realized variation of the blueprint. An instance is just a realized variation of a blueprint (the Class). Naturally then, Classes function as object creation. Furthermore, since we sometimes want one blueprint to derive from another blueprint, Classes are designed to support inheritance.

Modules cannot be instantiated, do not create objects, and do not support inheritance. So remember one module does NOT inherit from another!

So then what is the point of having Modules in a language? One obvious usage of Modules is to create a namespace, and you will notice this with other languages too. Again, what's cool about Ruby is that Modules can be reopened (just as Classes). And this is a big usage when you want to reuse a namespace in different Ruby files:

module Apple
  def a
    puts 'a'
  end
end

module Apple 
  def b
    puts 'b'
  end
end

class Fruit
  include Apple
end

 > f = Fruit.new
 => #<Fruit:0x007fe90c527c98> 
 > f.a
 => a
 > f.b
 => b

But there is no inheritance between modules:

module Apple
  module Green
    def green
      puts 'green'
    end
  end
end

class Fruit
  include Apple
end

> f = Fruit.new
 => #<Fruit:0x007fe90c462420> 
> f.green
NoMethodError: undefined method `green' for #<Fruit:0x007fe90c462420>

The Apple module did not inherit any methods from the Green module and when we included Apple in the Fruit class, the methods of the Apple module are added to the ancestor chain of Apple instances, but not methods of the Green module, even though the Green module was defined in the Apple module.

So how do we gain access to the green method? You have to explicitly include it in your class:

class Fruit
  include Apple::Green
end
 => Fruit 
 > f.green
=> green

But Ruby has another important usage for Modules. This is the Mixin facility, which I describe in another answer on SO. But to summarize, mixins allow you to define methods into the inheritance chain of objects. Through mixins, you can add methods to the inheritance chain of object instances (include) or the singleton_class of self (extend).

According to Express behind proxies, req.ip has taken into account reverse proxy if you have configured trust proxy properly. Therefore it's better than req.connection.remoteAddress which is obtained from network layer and unaware of proxy.

Closest you'd get to a struct is an object with all members public.

class MyStruct {
    public $foo;
    public $bar;
}

$obj = new MyStruct();
$obj->foo = 'Hello';
$obj->bar = 'World';

I'd say looking at the PHP Class Documentation would be worth it. If you need a one-off struct, use the StdObject as mentioned in alex's answer.

One set of familiar operations that you can do in MapReduce is the set of normal SQL operations: SELECT, SELECT WHERE, GROUP BY, ect.

Another good example is matrix multiply, where you pass one row of M and the entire vector x and compute one element of M * x.

Even in 2009, it seems too many had a very limited idea of what designing for the WORLDWIDE web involved. In 2015, unless designing for a specific country, a blacklist is the only way to accommodate the vast number of characters that may be valid.

The characters to blacklist then need to be chosen according what is illegal for the purpose for which the data is required.

However, sometimes it pays to break down the requirements, and handle each separately. Here look-ahead is your friend. These are sections bounded by (?=) for positive, and (?!) for negative, and effectively become AND blocks, because when the block is processed, if not failed, the regex processor will begin at the start of the text with the next block. Effectively, each look-ahead block will be preceded by the ^, and if its pattern is greedy, include up to the $. Even the ancient VB6/VBA (Office) 5.5 regex engine supports look-ahead.

So, to build up a full regular expression, start with the look-ahead blocks, then add the blacklisted character block before the final $.

For example, to limit the total numbers of characters, say between 3 and 15 inclusive, start with the positive look-ahead block (?=^.{3,15}$). Note that this needed its own ^ and $ to ensure that it covered all the text.

Now, while you might want to allow _ and -, you may not want to start or end with them, so add the two negative look-ahead blocks, (?!^[_-].+) for starts, and (?!.+[_-]$) for ends.

If you don't want multiple _ and -, add a negative look-ahead block of (?!.*[_-]{2,}). This will also exclude _- and -_ sequences.

If there are no more look-ahead blocks, then add the blacklist block before the $, such as [^<>[\]{\}|\\\/^~%# :;,$%?\0-\cZ]+, where the \0-\cZ excludes null and control characters, including NL (\n) and CR (\r). The final + ensures that all the text is greedily included.

Within the Unicode domain, there may well be other code-points or blocks that need to be excluded as well, but certainly a lot less than all the blocks that would have to be included in a whitelist.

The whole regex of all of the above would then be

(?=^.{3,15}$)(?!^[_-].+)(?!.+[_-]$)(?!.*[_-]{2,})[^<>[\]{}|\\\/^~%# :;,$%?\0-\cZ]+$

which you can check out live on https://regex101.com/, for pcre (php), javascript and python regex engines. I don't know where the java regex fits in those, but you may need to modify the regex to cater for its idiosyncrasies.

If you want to include spaces, but not _, just swap them every where in the regex.

The most useful application for this technique is for the pattern attribute for HTML input fields, where a single expression is required, returning a false for failure, thus making the field invalid, allowing input:invalid css to highlight it, and stopping the form being submitted.

I like the fundamental differences in the way that Ruby and Python method invocations operate.

Ruby methods are invoked via a form "message passing" and need not be explicitly first-class functions (there are ways to lift methods into "proper" function-objects) -- in this aspect Ruby is similar to Smalltalk.

Python works much more like JavaScript (or even Perl) where methods are functions which are invoked directly (there is also stored context information, but...)

While this might seem like a "minor" detail it is really just the surface of how different the Ruby and Python designs are. (On the other hand, they are also quite the same :-)

One practical difference is the concept of method_missing in Ruby (which, for better or worse, seems to be used in some popular frameworks). In Python, one can (at least partially) emulate the behavior using __getattr__/__getattribute__, albeit non-idiomatically.

Yes it is very easy to use, but you need to load javascript file in browser by script tag

<script src="module.js"></script> 

and then user in js file like

var moduel = require('./module');

I am making a app using electron and it works as expected.