I came here with a similar question/problem, but I only needed a single value to be stored from the query, not an array/table of results as in the orig post. I was able to use the table method above for a single value, however I have stumbled upon an easier way to store a single value.

declare @myVal int; set @myVal = isnull((select a from table1), 0);

Make sure to default the value in the isnull statement to a valid type for your variable, in my example the value in table1 that we're storing is an int.

You might try closing Pycharm, deleting the .idea folder from your project, then starting Pycharm again and recreating the project. This worked for me whereas invalidating cache did not.

If you want to overwrite the previous line (rather than continually adding to it), you can combine \r with print(), at the end of the print statement. For example,

from time import sleep

for i in xrange(0, 10):
    print("\r{0}".format(i)),
    sleep(.5)

print("...DONE!")

will count 0 to 9, replacing the old number in the console. The "...DONE!" will print on the same line as the last counter, 9.

In your case for the OP, this would allow the console to display percent complete of the install as a "progress bar", where you can define a begin and end character position, and update the markers in between.

print("Installing |XXXXXX              | 30%"),

You can use react-native-image-picker and axios (form-data)

uploadS3 = (path) => {
    var data = new FormData();

    data.append('files',
        { uri: path, name: 'image.jpg', type: 'image/jpeg' }
    );

    var config = {
        method: 'post',
        url: YOUR_URL,
        headers: {
            Accept: "application/json",
            "Content-Type": "multipart/form-data",
        },
        data: data,
    };

    axios(config)
        .then((response) => {
            console.log(JSON.stringify(response.data));
        })
        .catch((error) => {
            console.log(error);
        });
}

react-native-image-picker

selectPhotoTapped() {
    const options = {
        quality: 1.0,
        maxWidth: 500,
        maxHeight: 500,
        storageOptions: {
            skipBackup: true,
        },
    };

    ImagePicker.showImagePicker(options, response => {
        //console.log('Response = ', response);

        if (response.didCancel) {
            //console.log('User cancelled photo picker');
        } else if (response.error) {
            //console.log('ImagePicker Error: ', response.error);
        } else if (response.customButton) {
            //console.log('User tapped custom button: ', response.customButton);
        } else {
            let source = { uri: response.uri };
             
            // Call Upload Function
            this.uploadS3(source.uri)

            // You can also display the image using data:
            // let source = { uri: 'data:image/jpeg;base64,' + response.data };
            this.setState({
                avatarSource: source,
            });
            // this.imageUpload(source);
        }
    });
}

CreateImage(size, depth, channels)

https://opencv.willowgarage.com/documentation/python/core_operations_on_arrays.html#CreateImage

Might want to try

keytool -import -trustcacerts -noprompt -keystore <full path to cacerts> -storepass changeit -alias $REMHOST -file $REMHOST.pem

i honestly have no idea where it puts your certificate if you just write cacerts just give it a full path

You can use below code to get the Active Sheet name and change it to yours preferred name.

Sub ChangeSheetName()

Dim shName As String
Dim currentName As String
currentName = ActiveSheet.Name
shName = InputBox("What name you want to give for your sheet")
ThisWorkbook.Sheets(currentName).Name = shName

End Sub

If you're not on java 1.8 yet and you don't mind to use commons-lang you can use org.apache.commons.lang3.ObjectUtils#defaultIfNull

Your code would be:

dinner = ObjectUtils.defaultIfNull(cage.getChicken(),getFreeRangeChicken())

You could use this approach:

public class DateFormatConverter : IsoDateTimeConverter
{
    public DateFormatConverter(string format)
    {
        DateTimeFormat = format;
    }
}

And use it this way:

class ReturnObjectA 
{
    [JsonConverter(typeof(DateFormatConverter), "yyyy-MM-dd")]
    public DateTime ReturnDate { get;set;}
}

The DateTimeFormat string uses the .NET format string syntax described here: https://docs.microsoft.com/en-us/dotnet/standard/base-types/custom-date-and-time-format-strings

In the examples in PEP 8 (Style Guide for Python Code) document, I have seen that foo is None or foo is not None are being used instead of foo == None or foo != None.

Also using if boolean_value is recommended in this document instead of if boolean_value == True or if boolean_value is True. So I think if this is the official Python way. We Python guys should go on this way, too.

If you are trying to check the type of an object after you parse a JSON string, I suggest checking the constructor attribute:

obj.constructor == Array || obj.constructor == String || obj.constructor == Object

This will be a much faster check than typeof or instanceof.

If a JSON library does not return objects constructed with these functions, I would be very suspiciouse of it.

Verify what are you attempting to write. I was having the same issue, but I realized i was trying to write a byte array with length of 0.

It doesn't make sense to me, but I get: "Access to the path "

The 1st element as in no hard returns. A hard return I guess = an empty node/element in the DOM which becomes the 1st element disabling the doc compatability meta tag.

You can style the button using CSS or use an image-input. Additionally you might use the button element which supports inline content.

<button type="submit"><img src="/path/to/image" alt="Submit"></button>

For the record, as far as I can tell, you had two problems:

1. You weren't passing a "jsonp" type specifier to your $.get, so it was using an ordinary XMLHttpRequest. However, your browser supported CORS (Cross-Origin Resource Sharing) to allow cross-domain XMLHttpRequest if the server OKed it. That's where the Access-Control-Allow-Origin header came in.

2. I believe you mentioned you were running it from a file:// URL. There are two ways for CORS headers to signal that a cross-domain XHR is OK. One is to send Access-Control-Allow-Origin: * (which, if you were reaching Flickr via $.get, they must have been doing) while the other was to echo back the contents of the Origin header. However, file:// URLs produce a null Origin which can't be authorized via echo-back.

The first was solved in a roundabout way by Darin's suggestion to use $.getJSON. It does a little magic to change the request type from its default of "json" to "jsonp" if it sees the substring callback=? in the URL.

That solved the second by no longer trying to perform a CORS request from a file:// URL.

To clarify for other people, here are the simple troubleshooting instructions:

1. If you're trying to use JSONP, make sure one of the following is the case:
   • You're using $.get and set dataType to jsonp.
   • You're using $.getJSON and included callback=? in the URL.
2. If you're trying to do a cross-domain XMLHttpRequest via CORS...
   1. Make sure you're testing via http://. Scripts running via file:// have limited support for CORS.
   2. Make sure the browser actually supports CORS. (Opera and Internet Explorer are late to the party)

List<string> empnames = (from e in emplist select e.Enaame).ToList();

Or

string[] empnames = (from e in emplist select e.Enaame).ToArray();

Etc...

Just to add on top of the other answers. In order to initialize a complex static member, you can do it as follows:

Declare your static member as usual.

// myClass.h
class myClass
{
static complexClass s_complex;
//...
};

Make a small function to initialize your class if it's not trivial to do so. This will be called just the one time the static member is initialized. (Note that the copy constructor of complexClass will be used, so it should be well defined).

//class.cpp    
#include myClass.h
complexClass initFunction()
{
    complexClass c;
    c.add(...);
    c.compute(...);
    c.sort(...);
    // Etc.
    return c;
}

complexClass myClass::s_complex = initFunction();

Check out the new ROW_NUMBER function. It works like this:

SELECT ROW_NUMBER() OVER (ORDER BY EMPID ASC) AS ROWID, * FROM EMPLOYEE

From: https://requests.readthedocs.io/en/latest/user/quickstart/#post-a-multipart-encoded-file

Requests makes it very simple to upload Multipart-encoded files:

with open('report.xls', 'rb') as f:
    r = requests.post('http://httpbin.org/post', files={'report.xls': f})

That's it. I'm not joking - this is one line of code. The file was sent. Let's check:

>>> r.text
{
  "origin": "179.13.100.4",
  "files": {
    "report.xls": "<censored...binary...data>"
  },
  "form": {},
  "url": "http://httpbin.org/post",
  "args": {},
  "headers": {
    "Content-Length": "3196",
    "Accept-Encoding": "identity, deflate, compress, gzip",
    "Accept": "*/*",
    "User-Agent": "python-requests/0.8.0",
    "Host": "httpbin.org:80",
    "Content-Type": "multipart/form-data; boundary=127.0.0.1.502.21746.1321131593.786.1"
  },
  "data": ""
}

Make the header looks like this for HttpClient in NG5:

let httpOptions = {
      headers: new HttpHeaders({
        'Content-Type': 'application/json',
        'apikey': this.apikey,
        'appkey': this.appkey,
      }),
      params: new HttpParams().set('program_id', this.program_id)
    };

You will be able to make api call with your localhost url, it works for me ..

• Please never forget your params columnd in the header: such as params: new HttpParams().set('program_id', this.program_id)

just past this on head of your php page. before any code on this should be the top code.

<?php
header("Content-Type: application/vnd.ms-word"); 
header("Expires: 0"); 
header("Cache-Control: must-revalidate, post-check=0, pre-check=0"); 
header("content-disposition: attachment;filename=Hawala.doc");

?>

this will convert all html to MSWORD, now you can customize it according to your client requirement.

Basically in the world of IT certifications, you can call yourself just about anything you want as long as you don't step on the toes of a "real" professional organization. For example, you can be a "Microsoft Certified Solution Engineer" on your business card, but if you write the magic phrase "Professional Engineer" (or P. Eng) you're in legal trouble unless you've got that iron ring. I know there's a similar title for "real" architects, which I can't remember, but as long as you don't mention that you can be a "Cisco Certified Network Architect" or similar.

Methods description:

*toLowerCase()* Returns a new string with all characters converted to lowercase.

*toUpperCase()* Returns a new string with all characters converted to uppercase.

For example:

"Welcome".toLowerCase() returns a new string, welcome

"Welcome".toUpperCase() returns a new string, WELCOME

Why can't we make a unique id as below.

We can use DateTime.Now.Ticks and Guid.NewGuid().ToString() to combine together and make a unique id.

As the DateTime.Now.Ticks is added, we can find out the Date and Time in seconds at which the unique id is created.

Please see the code.

var ticks = DateTime.Now.Ticks;
var guid = Guid.NewGuid().ToString();
var uniqueSessionId = ticks.ToString() +'-'+ guid; //guid created by combining ticks and guid

var datetime = new DateTime(ticks);//for checking purpose
var datetimenow = DateTime.Now;    //both these date times are different.

We can even take the part of ticks in unique id and check for the date and time later for future reference.

You can attach the unique id created to the filename or can be used for creating unique session id for login-logout of users to our application or website.

You use EXECUTENONQUERY() for INSERT,UPDATE and DELETE.

But for SELECT you must use EXECUTEREADER().........

Read the existing answers first, this is just an addendum.

Notice that you can raise exceptions with or without arguments.

Example:

raise SystemExit

exits the program but you might want to know what happened.So you can use this.

raise SystemExit("program exited")

this will print "program exited" to stderr before closing the program.

You can use print_r to get human-readable output. But to display it as text we add "echo '';"

echo ''; print_r($row);

The accepted answer worked great but I wanted to add a tiny bit. It didn't work for me to use === because I was comparing arrays of arrays of objects, however throughout my app I've been using the fast-deep-equal package which I highly recommend. With that, my code looks like this:

let areAllEqual = arrs.every((val, i, arr) => equal(val, arr[0]) );

and my data looks like this:

[  
  [
    {
      "ID": 28,
      "AuthorID": 121,
      "VisitTypeID": 2
    },
    {
      "ID": 115,
      "AuthorID": 121,
      "VisitTypeID": 1
    },
    {
      "ID": 121,
      "AuthorID": 121,
      "VisitTypeID": 1
    }
  ],
  [
    {
      "ID": 121,
      "AuthorID": 121,
      "VisitTypeID": 1
    }
  ],
  [
    {
      "ID": 5,
      "AuthorID": 121,
      "VisitTypeID": 1
    },
    {
      "ID": 121,
      "AuthorID": 121,
      "VisitTypeID": 1
    }
  ]
]

Let's use the built in SqlDateTime class

new SqlDateTime(DateTime.Now).ToSqlString()

But still need to check for null values. This will throw overflow exception

new SqlDateTime(DateTime.MinValue).ToSqlString()

SqlDateTime overflow. Must be between 1/1/1753 12:00:00 AM and 12/31/9999 11:59:59 PM.

You can use all

> all(1:6 %in% 0:36)
[1] TRUE
> all(1:60 %in% 0:36)
[1] FALSE

On a similar note, if you want to check whether any of the elements is TRUE you can use any

> any(1:6 %in% 0:36)
[1] TRUE
> any(1:60 %in% 0:36)
[1] TRUE
> any(50:60 %in% 0:36)
[1] FALSE

In most browsers, the title attribute will render as a tooltip, and is generally flexible as to what sorts of elements it'll work with.

<span title="This will show as a tooltip">Mouse over for a tooltip!</span>
<a href="http://www.stackoverflow.com" title="Link to stackoverflow.com">stackoverflow.com</a>
<img src="something.png" alt="Something" title="Something">

All of those will render tooltips in most every browser.

Works on Swift 5+

import Foundation

let myString:String = "50"
let temp = myString as NSString
let myFloat = temp.floatValue
print(myFloat)  //50.0
print(type(of: myFloat)) // Float

// Also you can guard your value in order to check what is happening whenever your app crashes.

guard let myFloat = temp.floatValue else {
fatalError(" fail to change string to float value.")
}

Adding this intent filter to one of the activities declared in app manifest fixed this for me.

<activity
    android:name=".MyActivity"
    android:screenOrientation="portrait"
    android:label="@string/app_name">

    <intent-filter>

       <action android:name="android.intent.action.VIEW" />

    </intent-filter>

</activity>

Extending the @rebisco's answer. this below code will allow only numbers and single '.'(period) in the text box.

function isNumberKey(evt) {
        var charCode = (evt.which) ? evt.which : event.keyCode;
        if (charCode != 46 && charCode > 31 && (charCode < 48 || charCode > 57)) {
            return false;
        } else {
            // If the number field already has . then don't allow to enter . again.
            if (evt.target.value.search(/\./) > -1 && charCode == 46) {
                return false;
            }
            return true;
        }
    }

I have taken a few of these ideas and made a function that should perform quickly if lots of random numbers are required.

calling od is expensive if you need lots of random numbers. Instead I call it once and store 1024 random numbers from /dev/urandom. When rand is called, the last random number is returned and scaled. It is then removed from cache. When cache is empty, another 1024 random numbers is read.

Example:

rand 10; echo $RET

Returns a random number in RET between 0 and 9 inclusive.

declare -ia RANDCACHE
declare -i RET RAWRAND=$(( (1<<32)-1 ))

function rand(){  # pick a random number from 0 to N-1. Max N is 2^32
  local -i N=$1
  [[ ${#RANDCACHE[*]} -eq 0 ]] && { RANDCACHE=( $(od -An -tu4 -N1024 /dev/urandom) ); }  # refill cache
  RET=$(( (RANDCACHE[-1]*N+1)/RAWRAND ))  # pull last random number and scale
  unset RANDCACHE[${#RANDCACHE[*]}-1]     # pop read random number
};

# test by generating a lot of random numbers, then effectively place them in bins and count how many are in each bin.

declare -i c; declare -ia BIN

for (( c=0; c<100000; c++ )); do
  rand 10
  BIN[RET]+=1  # add to bin to check distribution
done

for (( c=0; c<10; c++ )); do
  printf "%d %d\n" $c ${BIN[c]} 
done

UPDATE: That does not work so well for all N. It also wastes random bits if used with small N. Noting that (in this case) a 32 bit random number has enough entropy for 9 random numbers between 0 and 9 (10*9=1,000,000,000 <= 2*32) we can extract multiple random numbers from each 32 random source value.

#!/bin/bash

declare -ia RCACHE

declare -i RET             # return value
declare -i ENT=2           # keep track of unused entropy as 2^(entropy)
declare -i RND=RANDOM%ENT  # a store for unused entropy - start with 1 bit

declare -i BYTES=4         # size of unsigned random bytes returned by od
declare -i BITS=8*BYTES    # size of random data returned by od in bits
declare -i CACHE=16        # number of random numbers to cache
declare -i MAX=2**BITS     # quantum of entropy per cached random number
declare -i c

function rand(){  # pick a random number from 0 to 2^BITS-1
  [[ ${#RCACHE[*]} -eq 0 ]] && { RCACHE=( $(od -An -tu$BYTES -N$CACHE /dev/urandom) ); }  # refill cache - could use /dev/random if CACHE is small
  RET=${RCACHE[-1]}              # pull last random number and scale
  unset RCACHE[${#RCACHE[*]}-1]  # pop read random number
};

function randBetween(){
  local -i N=$1
  [[ ENT -lt N ]] && {  # not enough entropy to supply ln(N)/ln(2) bits
    rand; RND=RET       # get more random bits
    ENT=MAX             # reset entropy
  }
  RET=RND%N  # random number to return
  RND=RND/N  # remaining randomness
  ENT=ENT/N  # remaining entropy
};

declare -ia BIN

for (( c=0; c<100000; c++ )); do
  randBetween 10
  BIN[RET]+=1
done

for c in ${BIN[*]}; do
  echo $c
done

OK, I got the icons because I wrote in menu.xml android:showAsAction="ifRoom" instead of app:showAsAction="ifRoom" since i am using v7 library.

However the title is coming at center of extended toolbar. How to make it appear at the top?

We can use compile method for this purpose. From the docs:

from sqlalchemy.sql import text
from sqlalchemy.dialects import postgresql

stmt = text("SELECT * FROM users WHERE users.name BETWEEN :x AND :y")
stmt = stmt.bindparams(x="m", y="z")

print(stmt.compile(dialect=postgresql.dialect(),compile_kwargs={"literal_binds": True}))

Result:

SELECT * FROM users WHERE users.name BETWEEN 'm' AND 'z'

Warning from docs:

Never use this technique with string content received from untrusted input, such as from web forms or other user-input applications. SQLAlchemy’s facilities to coerce Python values into direct SQL string values are not secure against untrusted input and do not validate the type of data being passed. Always use bound parameters when programmatically invoking non-DDL SQL statements against a relational database.

See "Is there a way to define variables of two types in for loop?" for another way involving nesting multiple for loops. The advantage of the other way over Georg's "struct trick" is that it (1) allows you to have a mixture of static and non-static local variables and (2) it allows you to have non-copyable variables. The downside is that it is far less readable and may be less efficient.

Disclaimer: I'm a developer of Cytoscape.js

Cytoscape.js is a HTML5 graph visualisation library. The API is sophisticated and follows jQuery conventions, including

• selectors for querying and filtering (cy.elements("node[weight >= 50].someClass") does much as you would expect),
• chaining (e.g. cy.nodes().unselect().trigger("mycustomevent")),
• jQuery-like functions for binding to events,
• elements as collections (like jQuery has collections of HTMLDomElements),
• extensibility (can add custom layouts, UI, core & collection functions, and so on),
• and more.

If you're thinking about building a serious webapp with graphs, you should at least consider Cytoscape.js. It's free and open-source:

http://js.cytoscape.org

This is the error that is returned when the Windows Firewall blocks the port (out-going). We have a strict web server so the outgoing ports are blocked by default. All I had to do was to create a rule to allow the TCP port number in wf.msc.

If you want to see data updates you could use this technique with required permissions:

SELECT OBJECT_NAME(OBJECT_ID) AS DatabaseName, last_user_update,*
FROM sys.dm_db_index_usage_stats
WHERE database_id = DB_ID( 'DATABASE')
AND OBJECT_ID=OBJECT_ID('TABLE')

You can also done this by using group by clause

   SELECT purchases.address_id, purchases.* FROM "purchases"
    WHERE "purchases"."product_id" = 1 GROUP BY address_id,
purchases.purchased_at ORDER purchases.purchased_at DESC

If you want some flexibility, create a class that watches the size of the list.

Here's a simple example. You would need to override all the methods that change the state of the list.

public class LimitedArrayList<T> extends ArrayList<T>{
    private int limit;

    public LimitedArrayList(int limit){
        this.limit = limit;
    }

    @Override
    public void add(T item){
        if (this.size() > limit)
            throw new ListTooLargeException();
        super.add(item);
    }

    // ... similarly for other methods that may add new elements ...

If you are using jQuery 1.2 or newer, you can simply use these:

$(window).width();
$(document).width();
$(window).height();
$(document).height();

From there it is a simple matter to decide the height of your element.

The content of the table/tables in PostgreSQL database can be deleted in several ways.

Deleting table content using sql:

Deleting content of one table:

TRUNCATE table_name;
DELETE FROM table_name;

Deleting content of all named tables:

TRUNCATE table_a, table_b, …, table_z;

Deleting content of named tables and tables that reference to them (I will explain it in more details later in this answer):

TRUNCATE table_a, table_b CASCADE;

Deleting table content using pgAdmin:

Deleting content of one table:

Right click on the table -> Truncate

Deleting content of table and tables that reference to it:

Right click on the table -> Truncate Cascaded

Difference between delete and truncate:

From the documentation:

DELETE deletes rows that satisfy the WHERE clause from the specified table. If the WHERE clause is absent, the effect is to delete all rows in the table. http://www.postgresql.org/docs/9.3/static/sql-delete.html

TRUNCATE is a PostgreSQL extension that provides a faster mechanism to remove all rows from a table. TRUNCATE quickly removes all rows from a set of tables. It has the same effect as an unqualified DELETE on each table, but since it does not actually scan the tables it is faster. Furthermore, it reclaims disk space immediately, rather than requiring a subsequent VACUUM operation. This is most useful on large tables. http://www.postgresql.org/docs/9.1/static/sql-truncate.html

Working with table that is referenced from other table:

When you have database that has more than one table the tables have probably relationship. As an example there are three tables:

create table customers (
customer_id int not null,
name varchar(20),
surname varchar(30),
constraint pk_customer primary key (customer_id)
);

create table orders (
order_id int not null,
number int not null,
customer_id int not null,
constraint pk_order primary key (order_id),
constraint fk_customer foreign key (customer_id) references customers(customer_id)
);

create table loyalty_cards (
card_id int not null,
card_number varchar(10) not null,
customer_id int not null,
constraint pk_card primary key (card_id),
constraint fk_customer foreign key (customer_id) references customers(customer_id)
);

And some prepared data for these tables:

insert into customers values (1, 'John', 'Smith');

insert into orders values 
(10, 1000, 1),
(11, 1009, 1),
(12, 1010, 1);        

insert into loyalty_cards values (100, 'A123456789', 1);

Table orders references table customers and table loyalty_cards references table customers. When you try to TRUNCATE / DELETE FROM the table that is referenced by other table/s (the other table/s has foreign key constraint to the named table) you get an error. To delete content from all three tables you have to name all these tables (the order is not important)

TRUNCATE customers, loyalty_cards, orders;

or just the table that is referenced with CASCADE key word (you can name more tables than just one)

TRUNCATE customers CASCADE;

The same applies for pgAdmin. Right click on customers table and choose Truncate Cascaded.

If you need a multidimensional PHP array to be printed directly into the html page source code, and in an indented human-readable Javascript Object Notation (aka JSON) fashion, use this nice function I found in http://php.net/manual/en/function.json-encode.php#102091 coded by somebody nicknamed "bohwaz".

<?php

function json_readable_encode($in, $indent = 0, $from_array = false)
{
    $_myself = __FUNCTION__;
    $_escape = function ($str)
    {
        return preg_replace("!([\b\t\n\r\f\"\\'])!", "\\\\\\1", $str);
    };

    $out = '';

    foreach ($in as $key=>$value)
    {
        $out .= str_repeat("\t", $indent + 1);
        $out .= "\"".$_escape((string)$key)."\": ";

        if (is_object($value) || is_array($value))
        {
            $out .= "\n";
            $out .= $_myself($value, $indent + 1);
        }
        elseif (is_bool($value))
        {
            $out .= $value ? 'true' : 'false';
        }
        elseif (is_null($value))
        {
            $out .= 'null';
        }
        elseif (is_string($value))
        {
            $out .= "\"" . $_escape($value) ."\"";
        }
        else
        {
            $out .= $value;
        }

        $out .= ",\n";
    }

    if (!empty($out))
    {
        $out = substr($out, 0, -2);
    }

    $out = str_repeat("\t", $indent) . "{\n" . $out;
    $out .= "\n" . str_repeat("\t", $indent) . "}";

    return $out;
}

?>       

I'm surprised that everyone in this question claims that std::cout is way better than printf, even if the question just asked for differences. Now, there is a difference - std::cout is C++, and printf is C (however, you can use it in C++, just like almost anything else from C). Now, I'll be honest here; both printf and std::cout have their advantages.

Real differences

Extensibility

std::cout is extensible. I know that people will say that printf is extensible too, but such extension is not mentioned in the C standard (so you would have to use non-standard features - but not even common non-standard feature exists), and such extensions are one letter (so it's easy to conflict with an already-existing format).

Unlike printf, std::cout depends completely on operator overloading, so there is no issue with custom formats - all you do is define a subroutine taking std::ostream as the first argument and your type as second. As such, there are no namespace problems - as long you have a class (which isn't limited to one character), you can have working std::ostream overloading for it.

However, I doubt that many people would want to extend ostream (to be honest, I rarely saw such extensions, even if they are easy to make). However, it's here if you need it.

Syntax

As it could be easily noticed, both printf and std::cout use different syntax. printf uses standard function syntax using pattern string and variable-length argument lists. Actually, printf is a reason why C has them - printf formats are too complex to be usable without them. However, std::cout uses a different API - the operator << API that returns itself.

Generally, that means the C version will be shorter, but in most cases it won't matter. The difference is noticeable when you print many arguments. If you have to write something like Error 2: File not found., assuming error number, and its description is placeholder, the code would look like this. Both examples work identically (well, sort of, std::endl actually flushes the buffer).

printf("Error %d: %s.\n", id, errors[id]);
std::cout << "Error " << id << ": " << errors[id] << "." << std::endl;

While this doesn't appear too crazy (it's just two times longer), things get more crazy when you actually format arguments, instead of just printing them. For example, printing of something like 0x0424 is just crazy. This is caused by std::cout mixing state and actual values. I never saw a language where something like std::setfill would be a type (other than C++, of course). printf clearly separates arguments and actual type. I really would prefer to maintain the printf version of it (even if it looks kind of cryptic) compared to iostream version of it (as it contains too much noise).

printf("0x%04x\n", 0x424);
std::cout << "0x" << std::hex << std::setfill('0') << std::setw(4) << 0x424 << std::endl;

Translation

This is where the real advantage of printf lies. The printf format string is well... a string. That makes it really easy to translate, compared to operator << abuse of iostream. Assuming that the gettext() function translates, and you want to show Error 2: File not found., the code to get translation of the previously shown format string would look like this:

printf(gettext("Error %d: %s.\n"), id, errors[id]);

Now, let's assume that we translate to Fictionish, where the error number is after the description. The translated string would look like %2$s oru %1$d.\n. Now, how to do it in C++? Well, I have no idea. I guess you can make fake iostream which constructs printf that you can pass to gettext, or something, for purposes of translation. Of course, $ is not C standard, but it's so common that it's safe to use in my opinion.

Not having to remember/look-up specific integer type syntax

C has lots of integer types, and so does C++. std::cout handles all types for you, while printf requires specific syntax depending on an integer type (there are non-integer types, but the only non-integer type you will use in practice with printf is const char * (C string, can be obtained using to_c method of std::string)). For instance, to print size_t, you need to use %zd, while int64_t will require using %"PRId64". The tables are available at http://en.cppreference.com/w/cpp/io/c/fprintf and http://en.cppreference.com/w/cpp/types/integer.

You can't print the NUL byte, \0

Because printf uses C strings as opposed to C++ strings, it cannot print NUL byte without specific tricks. In certain cases it's possible to use %c with '\0' as an argument, although that's clearly a hack.

Differences nobody cares about

Performance

Update: It turns out that iostream is so slow that it's usually slower than your hard drive (if you redirect your program to file). Disabling synchronization with stdio may help, if you need to output lots of data. If the performance is a real concern (as opposed to writing several lines to STDOUT), just use printf.

Everyone thinks that they care about performance, but nobody bothers to measure it. My answer is that I/O is bottleneck anyway, no matter if you use printf or iostream. I think that printf could be faster from a quick look into assembly (compiled with clang using the -O3 compiler option). Assuming my error example, printf example does way fewer calls than the cout example. This is int main with printf:

main:                                   @ @main
@ BB#0:
        push    {lr}
        ldr     r0, .LCPI0_0
        ldr     r2, .LCPI0_1
        mov     r1, #2
        bl      printf
        mov     r0, #0
        pop     {lr}
        mov     pc, lr
        .align  2
@ BB#1:

You can easily notice that two strings, and 2 (number) are pushed as printf arguments. That's about it; there is nothing else. For comparison, this is iostream compiled to assembly. No, there is no inlining; every single operator << call means another call with another set of arguments.

main:                                   @ @main
@ BB#0:
        push    {r4, r5, lr}
        ldr     r4, .LCPI0_0
        ldr     r1, .LCPI0_1
        mov     r2, #6
        mov     r3, #0
        mov     r0, r4
        bl      _ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_l
        mov     r0, r4
        mov     r1, #2
        bl      _ZNSolsEi
        ldr     r1, .LCPI0_2
        mov     r2, #2
        mov     r3, #0
        mov     r4, r0
        bl      _ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_l
        ldr     r1, .LCPI0_3
        mov     r0, r4
        mov     r2, #14
        mov     r3, #0
        bl      _ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_l
        ldr     r1, .LCPI0_4
        mov     r0, r4
        mov     r2, #1
        mov     r3, #0
        bl      _ZSt16__ostream_insertIcSt11char_traitsIcEERSt13basic_ostreamIT_T0_ES6_PKS3_l
        ldr     r0, [r4]
        sub     r0, r0, #24
        ldr     r0, [r0]
        add     r0, r0, r4
        ldr     r5, [r0, #240]
        cmp     r5, #0
        beq     .LBB0_5
@ BB#1:                                 @ %_ZSt13__check_facetISt5ctypeIcEERKT_PS3_.exit
        ldrb    r0, [r5, #28]
        cmp     r0, #0
        beq     .LBB0_3
@ BB#2:
        ldrb    r0, [r5, #39]
        b       .LBB0_4
.LBB0_3:
        mov     r0, r5
        bl      _ZNKSt5ctypeIcE13_M_widen_initEv
        ldr     r0, [r5]
        mov     r1, #10
        ldr     r2, [r0, #24]
        mov     r0, r5
        mov     lr, pc
        mov     pc, r2
.LBB0_4:                                @ %_ZNKSt5ctypeIcE5widenEc.exit
        lsl     r0, r0, #24
        asr     r1, r0, #24
        mov     r0, r4
        bl      _ZNSo3putEc
        bl      _ZNSo5flushEv
        mov     r0, #0
        pop     {r4, r5, lr}
        mov     pc, lr
.LBB0_5:
        bl      _ZSt16__throw_bad_castv
        .align  2
@ BB#6:

However, to be honest, this means nothing, as I/O is the bottleneck anyway. I just wanted to show that iostream is not faster because it's "type safe". Most C implementations implement printf formats using computed goto, so the printf is as fast as it can be, even without compiler being aware of printf (not that they aren't - some compilers can optimize printf in certain cases - constant string ending with \n is usually optimized to puts).

Inheritance

I don't know why you would want to inherit ostream, but I don't care. It's possible with FILE too.

class MyFile : public FILE {}

Type safety

True, variable length argument lists have no safety, but that doesn't matter, as popular C compilers can detect problems with printf format string if you enable warnings. In fact, Clang can do that without enabling warnings.

$ cat safety.c

#include <stdio.h>

int main(void) {
    printf("String: %s\n", 42);
    return 0;
}

$ clang safety.c

safety.c:4:28: warning: format specifies type 'char *' but the argument has type 'int' [-Wformat]
    printf("String: %s\n", 42);
                    ~~     ^~
                    %d
1 warning generated.
$ gcc -Wall safety.c
safety.c: In function ‘main’:
safety.c:4:5: warning: format ‘%s’ expects argument of type ‘char *’, but argument 2 has type ‘int’ [-Wformat=]
     printf("String: %s\n", 42);
     ^

In my case the problem was with hostname/public DNS.I associated Elastice IP with my instance and then my DNS got changed. I was trying to connect with old DNS. Changing it to new solved the problem. You can check the detail by going to your instance and then clicking view details.

Since you are in a controller, the action method is given a Request parameter.

You can access all POST data with $request->request->all();. This returns a key-value pair array.

When using GET requests you access data using $request->query->all();

FWIW,

Poor mans security folder (to protect a public shared folder from little prying eyes ;) )

mkdir -p {0..9}/{0..9}/{0..9}/{0..9}

Now you can put your files in a pin numbered folder. Not exactly waterproof, but it's a barrier for the youngest.

Use a JEditorPane with a HyperlinkListener.

I had a similar problem as well. The fix was a mix of both. I had a problem with asm-3.1 (as mentioned in the blog post linked by Takahiko. That jar was corrupt. I needed to manually get the jar from the maven central repository. Removing it and retrying just got the corrupt jar again. It then still failed on the asm-parent, which was a POM file containing the HTML with a 301. Again, it required manually getting the file myself. You may want to check what settings XML to see if you're set to a different repository, such as a local nexus server.

When the proper way to get the new one fails, manually grab it yourself.

var handle = setInterval(changeIframe, 30000);
var sites = ["google.com", "yahoo.com"];
var index = 0;

function changeIframe() {
  $('#frame')[0].src = sites[index++];
  index = index >= sites.length ? 0 : index;
}

Just run "export COPTS='-g -O0';" and rebuild your code. After rebuild, debug it using gdb. You'll not see such error. Thanks.

I am sharing a fragment shader example, how i actually debug.

#version 410 core

uniform sampler2D samp;
in VS_OUT
{
    vec4 color;
    vec2 texcoord;
} fs_in;

out vec4 color;

void main(void)
{
    vec4 sampColor;
    if( texture2D(samp, fs_in.texcoord).x > 0.8f)  //Check if Color contains red
        sampColor = vec4(1.0f, 1.0f, 1.0f, 1.0f);  //If yes, set it to white
    else
        sampColor = texture2D(samp, fs_in.texcoord); //else sample from original
    color = sampColor;

}

Here is a function to calculate the original size of an encoded Base 64 file as a String in KB:

private Double calcBase64SizeInKBytes(String base64String) {
    Double result = -1.0;
    if(StringUtils.isNotEmpty(base64String)) {
        Integer padding = 0;
        if(base64String.endsWith("==")) {
            padding = 2;
        }
        else {
            if (base64String.endsWith("=")) padding = 1;
        }
        result = (Math.ceil(base64String.length() / 4) * 3 ) - padding;
    }
    return result / 1000;
}

const absolutePath = path.join(__dirname, some, dir);

vs.

const absolutePath = path.resolve(__dirname, some, dir);

path.join will concatenate __dirname which is the directory name of the current file concatenated with values of some and dir with platform-specific separator.

Whereas

path.resolve will process __dirname, some and dir i.e. from right to left prepending it by processing it.

If any of the values of some or dir corresponds to a root path then the previous path will be omitted and process rest by considering it as root

In order to better understand the concept let me explain both a little bit more detail as follows:-

The path.join and path.resolve are two different methods or functions of the path module provided by nodejs.

Where both accept a list of paths but the difference comes in the result i.e. how they process these paths.

path.join concatenates all given path segments together using the platform-specific separator as a delimiter, then normalizes the resulting path. While the path.resolve() process the sequence of paths from right to left, with each subsequent path prepended until an absolute path is constructed.

When no arguments supplied

The following example will help you to clearly understand both concepts:-

My filename is index.js and the current working directory is E:\MyFolder\Pjtz\node

const path = require('path');

console.log("path.join() : ", path.join());
// outputs .
console.log("path.resolve() : ", path.resolve());
// outputs current directory or equivalent to __dirname

Result

? node index.js
path.join() :  .
path.resolve() :  E:\MyFolder\Pjtz\node

path.resolve() method will output the absolute path whereas the path.join() returns . representing the current working directory if nothing is provided

When some root path is passed as arguments

const path=require('path');

console.log("path.join() : " ,path.join('abc','/bcd'));
console.log("path.resolve() : ",path.resolve('abc','/bcd'));

Result i

? node index.js
path.join() :  abc\bcd
path.resolve() :  E:\bcd

path.join() only concatenates the input list with platform-specific separator while the path.resolve() process the sequence of paths from right to left, with each subsequent path prepended until an absolute path is constructed.

I know that the geoLocation API is better but for people whom can't use an SSL, you can still use some sort of services such as geopluginService.

as specified in the documentation you simply send a request with the ip to the service url http://www.geoplugin.net/php.gp?ip=xx.xx.xx.xx the output is a serialized array so you must need to unserialize it before using it.

Remember this service is not very accurate as the geoLocation is, but it is still an easy and fast solution.

When you select a radio button and click on a submit button, you need to handle the submission of any selected values in your php code using $_POST[] For example: if your radio button is:

<input type="radio" name="rdb" value="male"/>

then in your php code you need to use:

$rdb_value = $_POST['rdb'];

Why get so fancy about it? Just invoke the .msi file:

& <path>\filename.msi

or

Start-Process <path>\filename.msi

Edit: Full list of Start-Process parameters

https://ss64.com/ps/start-process.html

You'll have to provide more information about the generic type T. In your current PrintGeneric method, T might as well be a string, which does not have a var member.

You may want to change var to a property rather than a field

public interface ITest
{
    string var { get; }
}

And add a constraint where T: ITest to the PrintGeneric method.

For those who stumble upon this from a search (Google) and are trying to translate to .NET and MVC code. (as in my case)

@using (Html.BeginForm("RemoveLostRolls", "Process", FormMethod.Get)) {
     <input type="submit" value="Process" />
}

This will show a button labeled "Process" and take you to "/Process/RemoveLostRolls". Without "FormMethod.Get" it worked, but was seen as a "post".

Seems there's an easier way, at least in Kendo UI v2015.2.624:

$('#myDropDownSelector').data('kendoDropDownList').search('Text value to find');

If there's not a match in the dropdown, Kendo appears to set the dropdown to an unselected value, which makes sense.

I couldn't get @Gang's answer to work, but if you swap his value with search, as above, we're golden.

In Laravel 6 you can get it like this:

try {
    window.$ = window.jQuery = require('jquery');
} catch (e) {}

Calculate x/y (your actual numbers here), and press a b/c key, which is 3rd one below Shift key.

I tried:

ps aux | grep -w Z   # returns the zombies pid
ps o ppid {returned pid from previous command}   # returns the parent
kill -1 {the parent id from previous command}

this will work :)

In classic sh, you have to do something like:

s=test1
s="${s}test2"

(there are lots of variations on that theme, like s="$s""test2")

In bash, you can use +=:

s=test1
s+=test2

Use System.currentTimeMillis() or System.nanoTime().

Please do not reinvent the wheel. There are many open-source & COTS solutions that already exist to solve this problem.

Please take a look at the following JavaScript libraries:

• Moment.js: [Source] | [Minified]

• Datejs: [Source] | [Alpha1.zip (1.6MB)]

Demo

I wrote a one-liner using Moment.js below. You can check out the demo here: JSFiddle.

moment('2014-08-20 15:30:00').format('MM/DD/YYYY h:mm a'); // 08/20/2014 3:30 pm

sudo apt-get install libz-dev in ubuntu.

If anyone is interested, you can have the the offset information for all the consumer groups with the following command:

kafka-consumer-groups --bootstrap-server localhost:9092 --all-groups --describe

The parameter --all-groups is available from Kafka 2.4.0

You can also use the NSString class methods which will also create an autoreleased instance and have more options like string formatting:

NSString *myString = [NSString stringWithString:@"abc"];
NSString *myString = [NSString stringWithFormat:@"abc %d efg", 42];

Flushing seemingly failing to work is a side effect of automatic character set detection.

The browser will not display anything until it knows the character set to display it in, and if you don't specify the character set, it need tries to guess it. The problem being that it can't make a good guess without enough data, which is why browsers seem to have this 1024 byte (or similar) buffer they need filled before displaying anything.

The solution is therefore to make sure the browser doesn't have to guess the character set.

If you're sending text, add a '; charset=utf-8' to its content type, and if it's HTML, add the character set to the appropriate meta tag.

'b' should be in capital letter in document.getElementById modified code jsfiddle

function test()
{

var element = document.createElement("div");
element.appendChild(document.createTextNode('The man who mistook his wife for a hat'));
document.getElementById('lc').appendChild(element);
 //document.body.appendChild(element);
 }

Using:

  SELECT t.ctn_no
    FROM YOUR_TABLE t
GROUP BY t.ctn_no
  HAVING COUNT(t.ctn_no) > 1

...will show you the ctn_no value(s) that have duplicates in your table. Adding criteria to the WHERE will allow you to further tune what duplicates there are:

  SELECT t.ctn_no
    FROM YOUR_TABLE t
   WHERE t.s_ind = 'Y'
GROUP BY t.ctn_no
  HAVING COUNT(t.ctn_no) > 1

If you want to see the other column values associated with the duplicate, you'll want to use a self join:

SELECT x.*
  FROM YOUR_TABLE x
  JOIN (SELECT t.ctn_no
          FROM YOUR_TABLE t
      GROUP BY t.ctn_no
        HAVING COUNT(t.ctn_no) > 1) y ON y.ctn_no = x.ctn_no

Best way for me is:

1. create new branch, checkout to it
2. create or modify files, git add, git commit
3. back to master branch and do pull from remote (to get latest master changes)
4. merge newly created branch with master
5. remove newly created branch
6. push master to remote

Or you can push newly created branch on remote and merge there (if you do it this way, at the end you need to pull from remote master)

With a simple for loop:

for _, v := range myconfig {
    if v.Key == "key1" {
        // Found!
    }
}

Note that since element type of the slice is a struct (not a pointer), this may be inefficient if the struct type is "big" as the loop will copy each visited element into the loop variable.

It would be faster to use a range loop just on the index, this avoids copying the elements:

for i := range myconfig {
    if myconfig[i].Key == "key1" {
        // Found!
    }
}

Notes:

It depends on your case whether multiple configs may exist with the same key, but if not, you should break out of the loop if a match is found (to avoid searching for others).

for i := range myconfig {
    if myconfig[i].Key == "key1" {
        // Found!
        break
    }
}

Also if this is a frequent operation, you should consider building a map from it which you can simply index, e.g.

// Build a config map:
confMap := map[string]string{}
for _, v := range myconfig {
    confMap[v.Key] = v.Value
}

// And then to find values by key:
if v, ok := confMap["key1"]; ok {
    // Found
}

import json

json_data = json.dumps({
  "result":[
    {
      "run":[
        {
          "action":"stop"
        },
        {
          "action":"start"
        },
        {
          "action":"start"
        }
      ],
      "find": "true"
    }
  ]
})

item_dict = json.loads(json_data)
print len(item_dict['result'][0]['run'])

Convert it in dict.

See ?read.table. Basically, when you use read.table, you specify a number indicating the column:

##Row names in the first column
read.table(filname.txt, row.names=1)

Another approach is to use android.intent.action.USER_PRESENT instead of android.intent.action.BOOT_COMPLETED to avoid slow downs during the boot process. But this is only true if the user has enabled the lock Screen - otherwise this intent is never broadcasted.

Reference blog - The Problem With Android’s ACTION_USER_PRESENT Intent

select a.* , b.Aa , b.Ab, b.Ac from table1 a left join table2 b on a.id=b.id

this should select all columns from table 1 and only the listed columns from table 2 joined by id.

In cryptography there are two types of algorithms used:

Symmetric algorithms

A single key is used to encrypt data. When encrypted with the key, the data can be decrypted using the same key. If, for example, Mary encrypts a message using the key "my-secret" and sends it to John, he will be able to decrypt the message correctly with the same key "my-secret".

Asymmetric algorithms

Two keys are used to encrypt and decrypt messages. While one key(public) is used to encrypt the message, the other key(private) can only be used to decrypt it. So, John can generate both public and private keys, then send only the public key to Mary to encrypt her message. The message can only be decrypted using the private key.

HS256 and RS256 Scenario

These algorithms are NOT used to encrypt/decryt data. Rather they are used to verify the origin or the authenticity of the data. When Mary needs to send an open message to Jhon and he needs to verify that the message is surely from Mary, HS256 or RS256 can be used.

HS256 can create a signature for a given sample of data using a single key. When the message is transmitted along with the signature, the receiving party can use the same key to verify that the signature matches the message.

RS256 uses pair of keys to do the same. A signature can only be generated using the private key. And the public key has to be used to verify the signature. In this scenario, even if Jack finds the public key, he cannot create a spoof message with a signature to impersonate Mary.

There is a rule in Python programming called "it is Easier to Ask for Forgiveness than for Permission" (in short: EAFP). It means that you should catch exceptions instead of checking values for validity.

Thus, try the following:

try:
    qByUser = byUsrUrlObj.read()
    qUserData = json.loads(qByUser).decode('utf-8')
    questionSubjs = qUserData["all"]["questions"]
except ValueError:  # includes simplejson.decoder.JSONDecodeError
    print 'Decoding JSON has failed'

EDIT: Since simplejson.decoder.JSONDecodeError actually inherits from ValueError (proof here), I simplified the catch statement by just using ValueError.

echo 'hollow world' . PHP_EOL;

Use the constant PHP_EOL then it is OS independent too.

The simple solution is to remove IndexError by incorporating the condition:

if(index<(len(li)-1))

The error 'index out of range' will not occur now as the last index will not be reached. The idea is to access the next element while iterating. On reaching the penultimate element, you can access the last element.

Use enumerate method to add index or counter to an iterable(list, tuple, etc.). Now using the index+1, we can access the next element while iterating through the list.

li = [0, 1, 2, 3]

running = True
while running:
    for index, elem in enumerate(li):
        if(index<(len(li)-1)):
            thiselem = elem
            nextelem = li[index+1]

I was getting this error, even though I have exported RouterModule from app-routing.module and imported app-routingModule in Root module(app module).

Then I identified, I've imported component in Routing Module only.

Declaring the component in my Root module(App Module) solves the problem.

declarations: [
AppComponent,
NavBarComponent,
HomeComponent,
LoginComponent],

I believe this occurs when you are trying to checkout a remote branch that your local git repo is not aware of yet. Try:

git remote show origin

If the remote branch you want to checkout is under "New remote branches" and not "Tracked remote branches" then you need to fetch them first:

git remote update
git fetch

Now it should work:

git checkout -b local-name origin/remote-name

tl;dr

Developer Key = Api Key (any of yours)

find it in Google Console -> Google API -> Credentials

This happens if we change Build Path of the APP, this can be in any case of Adding or Removing or Changing Libraries or .jar file. The Best solution is to Restart the Eclipse.

What if you specified the default value to return, instead of using default(T)?

public static T GetQueryString<T>(string key, T defaultValue) {...}

It makes calling it easier too:

var intValue = GetQueryString("intParm", Int32.MinValue);
var strValue = GetQueryString("strParm", "");
var dtmValue = GetQueryString("dtmPatm", DateTime.Now); // eg use today's date if not specified

The downside being you need magic values to denote invalid/missing querystring values.

3D case

Modifying Mohsen's answer for 3D array:

[M,I] = max (A(:));
[ind1, ind2, ind3] = ind2sub(size(A),I)

You can't turn an existing string "raw". The r prefix on literals is understood by the parser; it tells it to ignore escape sequences in the string. However, once a string literal has been parsed, there's no difference between a raw string and a "regular" one. If you have a string that contains a newline, for instance, there's no way to tell at runtime whether that newline came from the escape sequence \n, from a literal newline in a triple-quoted string (perhaps even a raw one!), from calling chr(10), by reading it from a file, or whatever else you might be able to come up with. The actual string object constructed from any of those methods looks the same.

For the case when you know how many columns of data there will be in your CSV file, one simple call to textscan like Amro suggests will be your best solution.

However, if you don't know a priori how many columns are in your file, you can use a more general approach like I did in the following function. I first used the function fgetl to read each line of the file into a cell array. Then I used the function textscan to parse each line into separate strings using a predefined field delimiter and treating the integer fields as strings for now (they can be converted to numeric values later). Here is the resulting code, placed in a function read_mixed_csv:

function lineArray = read_mixed_csv(fileName, delimiter)

  fid = fopen(fileName, 'r');         % Open the file
  lineArray = cell(100, 1);           % Preallocate a cell array (ideally slightly
                                      %   larger than is needed)
  lineIndex = 1;                      % Index of cell to place the next line in
  nextLine = fgetl(fid);              % Read the first line from the file
  while ~isequal(nextLine, -1)        % Loop while not at the end of the file
    lineArray{lineIndex} = nextLine;  % Add the line to the cell array
    lineIndex = lineIndex+1;          % Increment the line index
    nextLine = fgetl(fid);            % Read the next line from the file
  end
  fclose(fid);                        % Close the file

  lineArray = lineArray(1:lineIndex-1);              % Remove empty cells, if needed
  for iLine = 1:lineIndex-1                          % Loop over lines
    lineData = textscan(lineArray{iLine}, '%s', ...  % Read strings
                        'Delimiter', delimiter);
    lineData = lineData{1};                          % Remove cell encapsulation
    if strcmp(lineArray{iLine}(end), delimiter)      % Account for when the line
      lineData{end+1} = '';                          %   ends with a delimiter
    end
    lineArray(iLine, 1:numel(lineData)) = lineData;  % Overwrite line data
  end

end

Running this function on the sample file content from the question gives this result:

>> data = read_mixed_csv('myfile.csv', ';')

data = 

  Columns 1 through 7

    '04'    'abc'    'def'    'ghj'    'klm'    ''            ''        
    ''      ''       ''       ''       ''       'Test'        'text'    
    ''      ''       ''       ''       ''       'asdfhsdf'    'dsafdsag'

  Columns 8 through 10

    ''          ''    ''
    '0xFF'      ''    ''
    '0x0F0F'    ''    ''

The result is a 3-by-10 cell array with one field per cell where missing fields are represented by the empty string ''. Now you can access each cell or a combination of cells to format them as you like. For example, if you wanted to change the fields in the first column from strings to integer values, you could use the function str2double as follows:

>> data(:, 1) = cellfun(@(s) {str2double(s)}, data(:, 1))

data = 

  Columns 1 through 7

    [  4]    'abc'    'def'    'ghj'    'klm'    ''            ''        
    [NaN]    ''       ''       ''       ''       'Test'        'text'    
    [NaN]    ''       ''       ''       ''       'asdfhsdf'    'dsafdsag'

  Columns 8 through 10

    ''          ''    ''
    '0xFF'      ''    ''
    '0x0F0F'    ''    ''

Note that the empty fields results in NaN values.

Have you tried to correct the syntax like this?:

create or replace procedure temp_proc AS
begin
  DBMS_OUTPUT.PUT_LINE('Test');
end;

It depends on your situation.

I would say, if your bool has a good name, then:

if (control.IsEnabled)  // Read "If control is enabled."
{
}

would be preferred.

If, however, the variable has a not-so-obvious name, checking against true would be helpful in understanding the logic.

if (first == true)  // Read "If first is true."
{
}

Use onKeyDown event, and inside that check the key code of the key pressed by user. Key code of Enter key is 13, check the code and put the logic there.

Check this example:

class CartridgeShell extends React.Component {_x000D_
_x000D_
   constructor(props) {_x000D_
      super(props);_x000D_
      this.state = {value:''}_x000D_
_x000D_
      this.handleChange = this.handleChange.bind(this);_x000D_
      this.keyPress = this.keyPress.bind(this);_x000D_
   } _x000D_
 _x000D_
   handleChange(e) {_x000D_
      this.setState({ value: e.target.value });_x000D_
   }_x000D_
_x000D_
   keyPress(e){_x000D_
      if(e.keyCode == 13){_x000D_
         console.log('value', e.target.value);_x000D_
         // put the login here_x000D_
      }_x000D_
   }_x000D_
_x000D_
   render(){_x000D_
      return(_x000D_
         <input value={this.state.value} onKeyDown={this.keyPress} onChange={this.handleChange} fullWidth={true} />_x000D_
      )_x000D_
    }_x000D_
}_x000D_
_x000D_
ReactDOM.render(<CartridgeShell/>, document.getElementById('app'))

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react.min.js"></script>_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.1.0/react-dom.min.js"></script>_x000D_
_x000D_
_x000D_
<div id = 'app' />

Note: Replace the input element by Material-Ui TextField and define the other properties also.

Why don't you use the Notepad++ multiline editing capabilities?

Hold down Alt while selecting text (using your usual click-and-drag approach) to select text across multiple lines. This is sometimes also referred to as column editing.

You could place the cursor at the beginning of the file, Press (and hold) Alt, Shift and then just keep pressing the down-arrow or PageDown to select the lines that you want to prepend with some text :-) Easy. Multiline editing is a very useful feature of Notepad++. It's also possible in Visual Studio, in the same manner, and also in Eclipse by switching to Block Selection Mode by pressing Alt+Shift+A and then use mouse to select text across lines.

SELECT COUNT(1) FROM MyTable WHERE ...

will loop thru all the records. This is the reason it is bad to use for record existence.

I would use

SELECT TOP 1 * FROM MyTable WHERE ...

After finding 1 record, it will terminate the loop.

x += 5 is not exactly the same as saying x = x + 5 in Python.

Note here:

In [1]: x = [2, 3, 4]    
In [2]: y = x    
In [3]: x += 7, 8, 9    
In [4]: x
Out[4]: [2, 3, 4, 7, 8, 9]    
In [5]: y
Out[5]: [2, 3, 4, 7, 8, 9]    
In [6]: x += [44, 55]    
In [7]: x
Out[7]: [2, 3, 4, 7, 8, 9, 44, 55]    
In [8]: y
Out[8]: [2, 3, 4, 7, 8, 9, 44, 55]    
In [9]: x = x + [33, 22]    
In [10]: x
Out[10]: [2, 3, 4, 7, 8, 9, 44, 55, 33, 22]    
In [11]: y
Out[11]: [2, 3, 4, 7, 8, 9, 44, 55]

See for reference: Why does += behave unexpectedly on lists?

Yes, you can Make a Batch file with the following code:

cd \Desktop

echo $Shell = New-Object -ComObject Shell.Application >>FILENAME.ps1
echo $RecBin = $Shell.Namespace(0xA) >>FILENAME.ps1
echo $RecBin.Items() ^| %%{Remove-Item $_.Path -Recurse -Confirm:$false} >>FILENAME.ps1


REM The actual lines being writen are right, exept for the last one, the actual thigs being writen are "$RecBin.Items() | %{Remove-Item $_.Path -Recurse -Confirm:$false}"   
But since | and % screw things up, i had to make some changes.

Powershell.exe -executionpolicy remotesigned -File  C:\Desktop\FILENAME.ps1

This basically creates a powershell script that empties the trash in the \Desktop directory, then runs it.

You can find a few examples here:

// Fill the DataSet.
DataSet ds = new DataSet();
ds.Locale = CultureInfo.InvariantCulture;
FillDataSet(ds);

DataTable contacts = ds.Tables["Contact"];
DataTable orders = ds.Tables["SalesOrderHeader"];

var query =
    contacts.AsEnumerable().Join(orders.AsEnumerable(),
    order => order.Field<Int32>("ContactID"),
    contact => contact.Field<Int32>("ContactID"),
    (contact, order) => new
    {
        ContactID = contact.Field<Int32>("ContactID"),
        SalesOrderID = order.Field<Int32>("SalesOrderID"),
        FirstName = contact.Field<string>("FirstName"),
        Lastname = contact.Field<string>("Lastname"),
        TotalDue = order.Field<decimal>("TotalDue")
    });


foreach (var contact_order in query)
{
    Console.WriteLine("ContactID: {0} "
                    + "SalesOrderID: {1} "
                    + "FirstName: {2} "
                    + "Lastname: {3} "
                    + "TotalDue: {4}",
        contact_order.ContactID,
        contact_order.SalesOrderID,
        contact_order.FirstName,
        contact_order.Lastname,
        contact_order.TotalDue);
}

Or just google for 'linq join method syntax'.

It would be this

array=($(ls -d */))

EDIT: See Gordon Davisson's solution for a more general answer (i.e. if your filenames contain special characters). This answer is merely a syntax correction.

If you using small microcontroller and need high speed solution with small footprint, this could be solutions. It is possible to use it for C project, but you need to add this file as assembler file *.asm, to your C project. Instructions: In C project add this declaration:

extern uint8_t byte_mirror(uint8_t);

Call this function from C

byteOutput= byte_mirror(byteInput);

This is the code, it is only suitable for 8051 core. In the CPU register r0 is data from byteInput. Code rotate right r0 cross carry and then rotate carry left to r1. Repeat this procedure 8 times, for every bit. Then the register r1 is returned to c function as byteOutput. In 8051 core is only posibble to rotate acumulator a.

NAME     BYTE_MIRROR
RSEG     RCODE
PUBLIC   byte_mirror              //8051 core        

byte_mirror
    mov r3,#8;
loop:   
    mov a,r0;
    rrc a;
    mov r0,a;    
    mov a,r1;
    rlc a;   
    mov r1,a;
    djnz r3,loop
    mov r0,a
    ret

PROS: It is small footprint, it is high speed CONS: It is not reusable code, it is only for 8051

011101101->carry

101101110<-carry

import json
weather = urllib2.urlopen('url')
wjson = weather.read()
wjdata = json.loads(wjson)
print wjdata['data']['current_condition'][0]['temp_C']

What you get from the url is a json string. And your can't parse it with index directly. You should convert it to a dict by json.loads and then you can parse it with index.

Instead of using .read() to intermediately save it to memory and then read it to json, allow json to load it directly from the file:

wjdata = json.load(urllib2.urlopen('url'))

Using flexbox:

HTML:

<div class="wrapper">
    <img src="pikachu.gif"/>
</div>

CSS:

.wrapper {
    height: 300px;
    width: 300px;
    display: flex;
    align-items: flex-end;
}

As requested in some comments on another answer, the image can also be horizontally centred with justify-content: center;

The proper way to fully uninstall conda (Anaconda / Miniconda):

1. Remove all conda-related files and directories using the Anaconda-Clean package

   conda activate your_conda_env_name
   conda install anaconda-clean
   anaconda-clean # add `--yes` to avoid being prompted to delete each one
   

2. Remove your entire conda directory

   rm -rf ~/miniconda3
   

3. Remove the line which adds the conda path to the PATH environment variable

   vi ~/.bashrc
   # -> Search for conda and delete the lines containing it
   # -> If you're not sure if the line belongs to conda, comment it instead of deleting it just to be safe
   source ~/.bashrc
   

4. Remove the backup folder created by the the Anaconda-Clean package NOTE: Think twice before doing this, because after that you won't be able to restore anything from your old conda installation!

   rm -rf ~/.anaconda_backup
   

Reference: Official conda documentation

this is another solution using immer immutabe utility, very suited for deeply nested objects with ease, and you should not care about mutation

this.setState(
    produce(draft => {
       draft.jasper.name = 'someothername'
    })
)

Try interface{} instead. To cast back as slice, try

func foo(bar interface{}) {
    s := bar.([]string)
    // ...
}

head -Line_number file_name | tail -1 |cut -c Num_of_chars

this script gives the exact number of characters from the specific line and location, e.g.:

head -5 tst.txt | tail -1 |cut -c 5-8

gives the chars in line 5 and chars 5 to 8 of line 5,

Note: tail -1 is used to select the last line displayed by the head.

The easiest way is by using @Query with NativeQuery option like below:

@Query(value="SELECT 1 * FROM table ORDER BY anyField DESC LIMIT 1", nativeQuery = true)

You can use RoundingMode.#UNNECESSARY if you want/accept exception thrown otherwise

new BigDecimal(value).setScale(2, RoundingMode.UNNECESSARY);

If this rounding mode is specified on an operation that yields an inexact result, an ArithmeticException is thrown.

Exception if not integer value:

java.lang.ArithmeticException: Rounding necessary

    public static Action<Func<TabPage, bool>> GetTabHider(this TabControl container) {
        if (container == null) throw new ArgumentNullException("container");

        var orderedCache = new List<TabPage>();
        var orderedEnumerator = container.TabPages.GetEnumerator();
        while (orderedEnumerator.MoveNext()) {
            var current = orderedEnumerator.Current as TabPage;
            if (current != null) {
                orderedCache.Add(current);
            }
        }

        return (Func<TabPage, bool> where) => {
            if (where == null) throw new ArgumentNullException("where");

            container.TabPages.Clear();
            foreach (TabPage page in orderedCache) {
                if (where(page)) {
                    container.TabPages.Add(page);
                }
            }
        };
    }

Use it like this:

    var hider = this.TabContainer1.GetTabHider();
    hider((tab) => tab.Text != "tabPage1");
    hider((tab) => tab.Text != "tabpage2");

The original ordering of the tabs is kept in a List that is completely hidden inside the anonymous function. Keep a reference to the function instance and you retain your original tab order.

You can do something like this:

// show loading image
$('#loader_img').show();

// main image loaded ?
$('#main_img').on('load', function(){
  // hide/remove the loading image
  $('#loader_img').hide();
});

You assign load event to the image which fires when image has finished loading. Before that, you can show your loader image.

1.Find that particular commit to which you want to revert using:

   git log
This command will give you a list of commits done by you .

2.Revert to that commit using :

    git revert <commit id> 

Now you local branch would have all files in particular

background: rgba(255,255,255,0.5);
backdrop-filter: blur(5px);

Instead of adding another blur background to your content, you can use backdrop-filter. FYI IE 11 and Firefox may not support it. Check caniuse.

Demo:

header {_x000D_
  position: fixed;_x000D_
  width: 100%;_x000D_
  padding: 10px;_x000D_
  background: rgba(255,255,255,0.5);_x000D_
  backdrop-filter: blur(5px);_x000D_
}_x000D_
body {_x000D_
  margin: 0;_x000D_
}

<header>_x000D_
  Header_x000D_
</header>_x000D_
<div>_x000D_
  <img src="https://dummyimage.com/600x400/000/fff" />_x000D_
  <img src="https://dummyimage.com/600x400/000/fff" />_x000D_
  <img src="https://dummyimage.com/600x400/000/fff" />_x000D_
</div>

If you are using Google fonts I would suggest the following.

If you want the fonts to run from your localhost or server you need to download the files.

Instead of downloading the ttf packages in the download links, use the live link they provide, for example:

http://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,600,300italic,400italic,600italic

Paste the URL in your browser and you should get a font-face declaration similar to the first answer.

Open the URLs provided, download and rename the files.

Stick the updated font-face declarations with relative paths to the woff files in your CSS, and you are done.

The answer here worked better for me as it isolates the search on the hashtag, not just returning results that contain the search string. In the answer above you would still need to parse the JSON response to see if the entities.hashtags array is not empty.

You can declare multiple type variables on a type or method. For example, using type parameters on the method:

<P, Q> int f(Set<P>, Set<Q>) {
  return 0;
}

This is a solution where you have many fields in your table and don't want to get a finger cramp from typing all the fields, just type the ones needed :)

How to copy some rows into the same table, with some fields having different values:

1. Create a temporary table with all the rows you want to copy
2. Update all the rows in the temporary table with the values you want
3. If you have an auto increment field, you should set it to NULL in the temporary table
4. Copy all the rows of the temporary table into your original table
5. Delete the temporary table

Your code:

CREATE table temporary_table AS SELECT * FROM original_table WHERE Event_ID="155";

UPDATE temporary_table SET Event_ID="120";

UPDATE temporary_table SET ID=NULL

INSERT INTO original_table SELECT * FROM temporary_table;

DROP TABLE temporary_table

General scenario code:

CREATE table temporary_table AS SELECT * FROM original_table WHERE <conditions>;

UPDATE temporary_table SET <fieldx>=<valuex>, <fieldy>=<valuey>, ...;

UPDATE temporary_table SET <auto_inc_field>=NULL;

INSERT INTO original_table SELECT * FROM temporary_table;

DROP TABLE temporary_table

Simplified/condensed code:

CREATE TEMPORARY TABLE temporary_table AS SELECT * FROM original_table WHERE <conditions>;

UPDATE temporary_table SET <auto_inc_field>=NULL, <fieldx>=<valuex>, <fieldy>=<valuey>, ...;

INSERT INTO original_table SELECT * FROM temporary_table;

As creation of the temporary table uses the TEMPORARY keyword it will be dropped automatically when the session finishes (as @ar34z suggested).

I made an alias for doing this and works like a charm, I do this:

 git config --global alias.mergetest '!f(){ git merge --no-commit --no-ff "$1"; git merge --abort; echo "Merge aborted"; };f '

Now I just call

git mergetest <branchname>

To find out if there are any conflicts.

The way that I do this is with GroovyShell.

GroovyShell shell = new GroovyShell()
def Util = shell.parse(new File('Util.groovy'))
def data = Util.fetchData()

I have written ffcnt to speed up recursive file counting under specific circumstances: rotational disks and filesystems that support extent mapping.

It can be an order of magnitude faster than ls or find based approaches, but YMMV.

Dim fileEntries As String() = Directory.GetFiles("YourPath", "*.txt")
' Process the list of .txt files found in the directory. '
Dim fileName As String

For Each fileName In fileEntries
    If (System.IO.File.Exists(fileName)) Then
        'Read File and Print Result if its true
        ReadFile(fileName)
    End If
    TransfereFile(fileName, 1)
Next

It's really easy to do this, simply send the file via an XHR request inside of the file input's onchange handler.

<input id="myFileInput" type="file" accept="image/*;capture=camera">

var myInput = document.getElementById('myFileInput');

function sendPic() {
    var file = myInput.files[0];

    // Send file here either by adding it to a `FormData` object 
    // and sending that via XHR, or by simply passing the file into 
    // the `send` method of an XHR instance.
}

myInput.addEventListener('change', sendPic, false);

pip is designed to upgrade python packages and not to upgrade python itself. pip shouldn't try to upgrade python when you ask it to do so.

Don't type pip install python but use an installer instead.

[(UITableViewCell *)[(UITableView *)self cellForRowAtIndexPath:nowIndex]

will give you uitableviewcell. But I am not sure what exactly you are asking for! Because you have this code and still you asking how to get uitableviewcell. Some more information will help to answer you :)

ADD: Here is an alternate syntax that achieves the same thing without the cast.

UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:nowIndex];

A fast and simple solution without any 3rd party includes.

public static String strJoin(String[] aArr, String sSep) {
    StringBuilder sbStr = new StringBuilder();
    for (int i = 0, il = aArr.length; i < il; i++) {
        if (i > 0)
            sbStr.append(sSep);
        sbStr.append(aArr[i]);
    }
    return sbStr.toString();
}

Note, not only there is dependency on .panel, it also has dependency on the DOM structure.

Make sure your elements are structured like this:

    <div id="parent-id">
        <div class="panel">
            <a data-toggle="collapse" data-target="#opt1" data-parent="#parent-id">Control</a>
            <div id="opt1" class="collapse">
...

It's basically what @Blazemonger said, but I think the hierarchy of the target element matters too. I didn't finish trying every possibility out, but basically it should work if you follow this hierarchy.

FYI, I had more layers between the control div & content div and that didn't work.

$dbc is returning false. Your query has an error in it:

SELECT users.*, profile.* --You do not join with profile anywhere.
                                 FROM users 
                                 INNER JOIN contact_info 
                                 ON contact_info.user_id = users.user_id 
                                 WHERE users.user_id=3");

The fix for this in general has been described by Raveren.

If you only have as "click event handler", use a <button> instead. A link has a specific semantic meaning.

E.g.:

<button onclick="ShowOld(2367,146986,2)">
    <img title="next page" alt="next page" src="/themes/me/img/arrn.png">
</button>

Taken from the NSString reference, you can use :

NSString *theFileName = [[string lastPathComponent] stringByDeletingPathExtension];

The lastPathComponent call will return thefile.ext, and the stringByDeletingPathExtension will remove the extension suffix from the end.

    //Example to define how to do :

    DataTable dt = new DataTable();   

    dt.Columns.Add("ID");
    dt.Columns.Add("FirstName");
    dt.Columns.Add("LastName");
    dt.Columns.Add("Address");
    dt.Columns.Add("City");
           //  The table structure is:
            //ID    FirstName   LastName    Address     City

       //Now we want to add a PhoneNo column after the LastName column. For this we use the                               
             //SetOrdinal function, as iin:
        dt.Columns.Add("PhoneNo").SetOrdinal(3);

            //3 is the position number and positions start from 0.`enter code here`

               //Now the table structure will be:
              // ID      FirstName   LastName    PhoneNo    Address     City

You need to add this to /etc/nginx/sites-enabled/default to execute php files on Nginx Server:

server {
    listen 80 default_server;
    listen [::]:80 default_server ipv6only=on;

    root /usr/share/nginx/html;
    index index.php index.html index.htm;

    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

The general idea is to add, commit and push your files to the GitHub repo.

First you need to clone your GitHub repo.
Then, you would git add all the files from your other folder: one trick is to specify an alternate working tree when git add'ing your files.

git --work-tree=yourSrcFolder add .

(done from the root directory of your cloned Git repo, then git commit -m "a msg", and git push origin master)

That way, you keep separate your initial source folder, from your Git working tree.

Note that since early December 2012, you can create new files directly from GitHub:

ProTip™: You can pre-fill the filename field using just the URL.
Typing ?filename=yournewfile.txt at the end of the URL will pre-fill the filename field with the name yournewfile.txt.

See my code which may help you. models.py

from django.db import models

class Customer(models.Model):
    name = models.CharField(max_length=100)
    email = models.EmailField(max_length=100)
    password = models.CharField(max_length=100)
    instrument_purchase = models.CharField(max_length=100)
    house_no = models.CharField(max_length=100)
    address_line1 = models.CharField(max_length=100)
    address_line2 = models.CharField(max_length=100)
    telephone = models.CharField(max_length=100)
    zip_code = models.CharField(max_length=20)
    state = models.CharField(max_length=100)
    country = models.CharField(max_length=100)

    def __str__(self):
        return self.name

forms.py

from django import forms
from models import *

class CustomerForm(forms.ModelForm):
    password = forms.CharField(widget=forms.PasswordInput)

    class Meta:
        model = Customer
        fields = ('name', 'email', 'password', 'instrument_purchase', 'house_no', 'address_line1', 'address_line2', 'telephone', 'zip_code', 'state', 'country')

Old post, but I just ran into a very similar problem. After some experimenting, I found that you can do this with a single command:

kill $(ps aux | grep <process_name> | grep -v "grep" | cut -d " " -f2)

In OP's case, <process_name> would be "gedit file.txt".

It's possible to compile and use tmux within Cgywin. http://sourceforge.net/mailarchive/message.php?msg_id=30850840

Here is a great working regex for numbers. This accepts number with commas and decimals.

/^-?(?:\d+|\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/

Where is this info kept ("this connection is between computer A and server F")?

A TCP connection is recognized by source IP and port and destination IP and port. Your OS, all intermediate session-aware devices and the server's OS will recognize the connection by this.

HTTP works with request-response: client connects to server, performs a request and gets a response. Without keep-alive, the connection to an HTTP server is closed after each response. With HTTP keep-alive you keep the underlying TCP connection open until certain criteria are met.

This allows for multiple request-response pairs over a single TCP connection, eliminating some of TCP's relatively slow connection startup.

When The IIS (F) sends keep alive header (or user sends keep-alive) , does it mean that (E,C,B) save a connection

No. Routers don't need to remember sessions. In fact, multiple TCP packets belonging to same TCP session need not all go through same routers - that is for TCP to manage. Routers just choose the best IP path and forward packets. Keep-alive is only for client, server and any other intermediate session-aware devices.

which is only for my session ?

Does it mean that no one else can use that connection

That is the intention of TCP connections: it is an end-to-end connection intended for only those two parties.

If so - does it mean that keep alive-header - reduce the number of overlapped connection users ?

Define "overlapped connections". See HTTP persistent connection for some advantages and disadvantages, such as:

• Lower CPU and memory usage (because fewer connections are open simultaneously).
• Enables HTTP pipelining of requests and responses.
• Reduced network congestion (fewer TCP connections).
• Reduced latency in subsequent requests (no handshaking).

if so , for how long does the connection is saved to me ? (in other words , if I set keep alive- "keep" till when?)

An typical keep-alive response looks like this:

Keep-Alive: timeout=15, max=100

See Hypertext Transfer Protocol (HTTP) Keep-Alive Header for example (a draft for HTTP/2 where the keep-alive header is explained in greater detail than both 2616 and 2086):

• A host sets the value of the timeout parameter to the time that the host will allows an idle connection to remain open before it is closed. A connection is idle if no data is sent or received by a host.

• The max parameter indicates the maximum number of requests that a client will make, or that a server will allow to be made on the persistent connection. Once the specified number of requests and responses have been sent, the host that included the parameter could close the connection.

However, the server is free to close the connection after an arbitrary time or number of requests (just as long as it returns the response to the current request). How this is implemented depends on your HTTP server.

You are floating the children which means they "float" in front of the container. In order to take the correct height, you must "clear" the float

The div style="clear: both" clears the floating an gives the correct height to the container. see http://css.maxdesign.com.au/floatutorial/clear.htm for more info on floats.

eg.

<div class="c">
    <div class="l">

    </div>
    <div class="m">
        World
    </div>
    <div style="clear: both" />
</div>

You can use the following array methods to obtain a column from a 2D array:

Array.prototype.map()

const array_column = (array, column) => array.map(e => e[column]);

Array.prototype.reduce()

const array_column = (array, column) => array.reduce((a, c) => {
  a.push(c[column]);
  return a;
}, []);

Array.prototype.forEach()

const array_column = (array, column) => {
  const result = [];

  array.forEach(e => {
    result.push(e[column]);
  });

  return result;
};

If your 2D array is a square (the same number of columns for each row), you can use the following method:

Array.prototype.flat() / .filter()

const array_column = (array, column) => array.flat().filter((e, i) => i % array.length === column);

The call to InitializeComponent() (which is usually called in the default constructor of at least Window and UserControl) is actually a method call to the partial class of the control (rather than a call up the object hierarchy as I first expected).

This method locates a URI to the XAML for the Window/UserControl that is loading, and passes it to the System.Windows.Application.LoadComponent() static method. LoadComponent() loads the XAML file that is located at the passed in URI, and converts it to an instance of the object that is specified by the root element of the XAML file.

In more detail, LoadComponent creates an instance of the XamlParser, and builds a tree of the XAML. Each node is parsed by the XamlParser.ProcessXamlNode(). This gets passed to the BamlRecordWriter class. Some time after this I get a bit lost in how the BAML is converted to objects, but this may be enough to help you on the path to enlightenment.

Note: Interestingly, the InitializeComponent is a method on the System.Windows.Markup.IComponentConnector interface, of which Window/UserControl implement in the partial generated class.

Hope this helps!

I was looking for a way to format numbers without leading or trailing spaces, periods, zeros (except one leading zero for numbers less than 1 that should be present).

This is frustrating that such most usual formatting can't be easily achieved in Oracle.

Even Tom Kyte only suggested long complicated workaround like this:

case when trunc(x)=x
    then to_char(x, 'FM999999999999999999')
    else to_char(x, 'FM999999999999999.99')
end x

But I was able to find shorter solution that mentions the value only once:

rtrim(to_char(x, 'FM999999999999990.99'), '.')

This works as expected for all possible values:

select 
    to_char(num, 'FM99.99') wrong_leading_period,
    to_char(num, 'FM90.99') wrong_trailing_period,
    rtrim(to_char(num, 'FM90.99'), '.') correct
from (
  select num from (select 0.25 c1, 0.1 c2, 1.2 c3, 13 c4, -70 c5 from dual)
  unpivot (num for dummy in (c1, c2, c3, c4, c5))
) sampledata;

    | WRONG_LEADING_PERIOD | WRONG_TRAILING_PERIOD | CORRECT |
    |----------------------|-----------------------|---------|
    |                  .25 |                  0.25 |    0.25 |
    |                   .1 |                   0.1 |     0.1 |
    |                  1.2 |                   1.2 |     1.2 |
    |                  13. |                   13. |      13 |
    |                 -70. |                  -70. |     -70 |

Still looking for even shorter solution.

There is a shortening approarch with custom helper function:

create or replace function str(num in number) return varchar2
as
begin
    return rtrim(to_char(num, 'FM999999999999990.99'), '.');
end;

But custom pl/sql functions have significant performace overhead that is not suitable for heavy queries.

Android Devices Matrices

                            ldpi     mdpi     hdpi    xhdpi    xxhdpi      xxxhdpi
Launcher And Home           36*36    48*48   72*72    96*96    144*144     192*192
Toolbar And Tab             24*24    32*32   48*48    64*64    96*96       128*128
Notification                18*18    24*24   36*36    48*48    72*72       96*96 
Background                 240*320  320*480 480*800  768*1280  1080 *1920  1440*2560 

(For good approach minus Toolbar Size From total height of Background Screen and then Design Graphics of Screens )

For More Help (This link includes tablets also):

https://design.google.com/devices/

Android Native Icons (Recommended) You can change color of these icons programmatically. https://design.google.com/icons/

The trick here is to put the library AFTER the module you are compiling. The problem is a reference thing. The linker resolves references in order, so when the library is BEFORE the module being compiled, the linker gets confused and does not think that any of the functions in the library are needed. By putting the library AFTER the module, the references to the library in the module are resolved by the linker.

There is no solution that works for all use cases. If you use the $request->get('_route') method, or its variants, it will return '_internal' for cases where forwarding took place.

If you need a solution that works even with forwarding, you have to use the new RequestStack service, that arrived in 2.4, but this will break ESI support:

$requestStack = $container->get('request_stack');
$masterRequest = $requestStack->getMasterRequest(); // this is the call that breaks ESI
if ($masterRequest) {
    echo $masterRequest->attributes->get('_route');
}

You can make a twig extension out of this if you need it in templates.

It doesn't print anything. It is used to figure out how many characters got printed before %n appeared in the format string, and output that to the provided int:

#include <stdio.h>

int main(int argc, char* argv[])
{
    int resultOfNSpecifier = 0;
    _set_printf_count_output(1); /* Required in visual studio */
    printf("Some format string%n\n", &resultOfNSpecifier);
    printf("Count of chars before the %%n: %d\n", resultOfNSpecifier);
    return 0;
}

_{(Documentation for _set_printf_count_output)}

If I had to guess, I'd say you installed the PPA 7.1.8 as CLI only (php7-cli). You're getting your version info from that, but your libapache2-mod-php package is still 14.04 main which is 5.6. Check your phpinfo in your browser to confirm the version. You might also consider migrating to Ubuntu 16.04 to get PHP 7.0 in main.

You shouldn't use ${varName} when you're outside of strings, you should just use varName. Inside strings you use it like this; echo "this is a string ${someVariable}";. Infact you can place an general java expression inside of ${...}; echo "this is a string ${func(arg1, arg2)}.

You can create a data.sql file in your src/main/resources folder and it will be automatically executed on startup. In this file you can add some insert statements, eg.:

INSERT INTO users (username, firstname, lastname) VALUES
  ('lala', 'lala', 'lala'),
  ('lolo', 'lolo', 'lolo');

Similarly, you can create a schema.sql file (or schema-h2.sql) as well to create your schema:

CREATE TABLE task (
  id          INTEGER PRIMARY KEY,
  description VARCHAR(64) NOT NULL,
  completed   BIT NOT NULL);

Though normally you shouldn't have to do this since Spring boot already configures Hibernate to create your schema based on your entities for an in memory database. If you really want to use schema.sql you'll have to disable this feature by adding this to your application.properties:

spring.jpa.hibernate.ddl-auto=none

More information can be found at the documentation about Database initialization.

If you're using Spring boot 2, database initialization only works for embedded databases (H2, HSQLDB, ...). If you want to use it for other databases as well, you need to change the spring.datasource.initialization-mode property:

spring.datasource.initialization-mode=always

If you're using multiple database vendors, you can name your file data-h2.sql or data-mysql.sql depending on which database platform you want to use.

To make that work, you'll have to configure the spring.datasource.platform property though:

spring.datasource.platform=h2

Add this to the top of your js

var input = $('#myinputbox');

input.focus();

Or to html

<script>
    var input = $('#myinputbox');

    input.focus();
</script>

git diff `git merge-base master branch`..branch

Merge base is the point where branch diverged from master.

Git diff supports a special syntax for this:

git diff master...branch

You must not swap the sides because then you would get the other branch. You want to know what changed in branch since it diverged from master, not the other way round.

Loosely related:

• Finding a branch point with Git?
• How can I see what branch another branch was forked from?

Note that .. and ... syntax does not have the same semantics as in other Git tools. It differs from the meaning specified in man gitrevisions.

Quoting man git-diff:

• git diff [--options] <commit> <commit> [--] [<path>…]

  This is to view the changes between two arbitrary <commit>.

• git diff [--options] <commit>..<commit> [--] [<path>…]

  This is synonymous to the previous form. If <commit> on one side is omitted, it will have the same effect as using HEAD instead.

• git diff [--options] <commit>...<commit> [--] [<path>…]

  This form is to view the changes on the branch containing and up to the second <commit>, starting at a common ancestor of both <commit>. "git diff A...B" is equivalent to "git diff $(git-merge-base A B) B". You can omit any one of <commit>, which has the same effect as using HEAD instead.

Just in case you are doing something exotic, it should be noted that all of the <commit> in the above description, except in the last two forms that use ".." notations, can be any <tree>.

For a more complete list of ways to spell <commit>, see "SPECIFYING REVISIONS" section in gitrevisions[7]. However, "diff" is about comparing two endpoints, not ranges, and the range notations ("<commit>..<commit>" and "<commit>...<commit>") do not mean a range as defined in the "SPECIFYING RANGES" section in gitrevisions[7].

use

app:backgroundTint="@color/orange" in

<com.google.android.material.floatingactionbutton.FloatingActionButton
        android:id="@+id/id_share_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/share"
        app:backgroundTint="@color/orange"
        app:fabSize="mini"
        app:layout_anchorGravity="end|bottom|center" />



</androidx.coordinatorlayout.widget.CoordinatorLayout>

Try:

"TimeStamp":{$toDecimal: { $toDate:"$Datum"}}

When using JUnit asserts, I always make the message nice and clear. It saves huge amounts of time debugging. Doing it this way avoids having to add a added dependency on hamcrest Matchers.

previousTokenValues[1] = "1378994409108";
currentTokenValues[1] = "1378994416509";

Long prev = Long.parseLong(previousTokenValues[1]);
Long curr = Long.parseLong(currentTokenValues[1]);
assertTrue("Previous (" + prev + ") should be greater than current (" + curr + ")", prev > curr);

@DavidG's answer is correct, but I would like to add that if you're building from the command line, the equivalent solution is to make sure that you're using the appropriate version of msbuild (in this particular case, it needs to be version 15).

Run msbuild /? to see which version you're using or where msbuild to check which location the environment takes the executable from and update (or point to the right location of) the tools if necessary.

Download the latest MSBuild tool from here.

The current HTML5 draft also allows ommitting the href attribute completely.

If the a element has no href attribute, then the element represents a placeholder for where a link might otherwise have been placed, if it had been relevant.

To answer your question: Yes it's valid.

Try using BindingExpression.UpdateTarget()

If the databases share server, have a login that has priveleges to both of the databases, and simply have a query run similiar to:

$query = $this->db->query("
SELECT t1.*, t2.id
FROM `database1`.`table1` AS t1, `database2`.`table2` AS t2
");

Otherwise I think you might have to run the 2 queries separately and fix the logic afterwards.

SELECT @rn:=@rn+1 AS rank, itemID, ordercount
FROM (
  SELECT itemID, COUNT(*) AS ordercount
  FROM orders
  GROUP BY itemID
  ORDER BY ordercount DESC
) t1, (SELECT @rn:=0) t2;

The answer was surprisingly simple. I had to add a Content-Type header in the POST request with a value of application/json. Without this header Jersey did not know what to do with the request body (in spite of the @Consumes(MediaType.APPLICATION_JSON) annotation)!

I'm not C++ developer so I will not provide code. But I can provide simple hsv2rgb algorithm (rgb2hsv here) which I currently discover - I update wiki with description: HSV and HLS. Main improvement is that I carefully observe r,g,b as hue functions and introduce simpler shape function to describe them (without loosing accuracy). The Algorithm - on input we have: h (0-255), s (0-255), v(0-255)

r = 255*f(5),   g = 255*f(3),   b = 255*f(1)

We use function f described as follows

f(n) = v/255 - (v/255)*(s/255)*max(min(k,4-k,1),0)

where (mod can return fraction part; k is floating point number)

k = (n+h*360/(255*60)) mod 6;

Here are snippets/PoV in SO in JS: HSV and HSL

Substr() normally (i.e. PHP and Perl) works this way:

s = Substr(s, beginning, LENGTH)

So the parameters are beginning and LENGTH.

But Python's behaviour is different; it expects beginning and one after END (!). This is difficult to spot by beginners. So the correct replacement for Substr(s, beginning, LENGTH) is

s = s[ beginning : beginning + LENGTH]

The simplest method is to use LIKE:

SELECT CASE WHEN 'FDAJLK' LIKE '%[0-9]%' THEN 'True' ELSE 'False' END;  -- False
SELECT CASE WHEN 'FDAJ1K' LIKE '%[0-9]%' THEN 'True' ELSE 'False' END;  -- True

Events are pretty easy in C#, but the MSDN docs in my opinion make them pretty confusing. Normally, most documentation you see discusses making a class inherit from the EventArgs base class and there's a reason for that. However, it's not the simplest way to make events, and for someone wanting something quick and easy, and in a time crunch, using the Action type is your ticket.

Creating Events & Subscribing To Them

1. Create your event on your class right after your class declaration.

public event Action<string,string,string,string>MyEvent;

2. Create your event handler class method in your class.

private void MyEventHandler(string s1,string s2,string s3,string s4)
{
  Console.WriteLine("{0} {1} {2} {3}",s1,s2,s3,s4);
}

3. Now when your class is invoked, tell it to connect the event to your new event handler. The reason the += operator is used is because you are appending your particular event handler to the event. You can actually do this with multiple separate event handlers, and when an event is raised, each event handler will operate in the sequence in which you added them.

class Example
{
  public Example() // I'm a C# style class constructor
  {
    MyEvent += new Action<string,string,string,string>(MyEventHandler);
  }
}

4. Now, when you're ready, trigger (aka raise) the event somewhere in your class code like so:

MyEvent("wow","this","is","cool");

The end result when you run this is that the console will emit "wow this is cool". And if you changed "cool" with a date or a sequence, and ran this event trigger multiple times, you'd see the result come out in a FIFO sequence like events should normally operate.

In this example, I passed 4 strings. But you could change those to any kind of acceptable type, or used more or less types, or even remove the <...> out and pass nothing to your event handler.

And, again, if you had multiple custom event handlers, and subscribed them all to your event with the += operator, then your event trigger would have called them all in sequence.

Identifying Event Callers

But what if you want to identify the caller to this event in your event handler? This is useful if you want an event handler that reacts with conditions based on who's raised/triggered the event. There are a few ways to do this. Below are examples that are shown in order by how fast they operate:

Option 1. (Fastest) If you already know it, then pass the name as a literal string to the event handler when you trigger it.

Option 2. (Somewhat Fast) Add this into your class and call it from the calling method, and then pass that string to the event handler when you trigger it:

private static string GetCaller([System.Runtime.CompilerServices.CallerMemberName] string s = null) => s;

Option 3. (Least Fast But Still Fast) In your event handler when you trigger it, get the calling method name string with this:

string callingMethod = new System.Diagnostics.StackTrace().GetFrame(1).GetMethod().ReflectedType.Name.Split('<', '>')[1];

Unsubscribing From Events

You may have a scenario where your custom event has multiple event handlers, but you want to remove one special one out of the list of event handlers. To do so, use the -= operator like so:

MyEvent -= MyEventHandler;

A word of minor caution with this, however. If you do this and that event no longer has any event handlers, and you trigger that event again, it will throw an exception. (Exceptions, of course, you can trap with try/catch blocks.)

Clearing All Events

Okay, let's say you're through with events and you don't want to process any more. Just set it to null like so:

MyEvent = null;

The same caution for Unsubscribing events is here, as well. If your custom event handler no longer has any events, and you trigger it again, your program will throw an exception.

1. Include the Open Graph XML namespace extension to your HTML declaration

<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:fb="http://ogp.me/ns/fb#">

2. Inside your <head></head> use the following meta tag to define the image you want to use

<meta property="og:image" content="fully_qualified_image_url_here" />

Read more about open graph protocol here.

After doing the above, use the Facebook "Object Debugger" if the image does not show up correctly. Also note the first time shared it still won't show up unless height and width are also specified, see Share on Facebook - Thumbnail not showing for the first time

Useful simple class are forked by me on: https://gist.github.com/kiuz/816e24aa787c2d102dd0

public class OSValidator {

    private static String OS = System.getProperty("os.name").toLowerCase();

    public static void main(String[] args) {

        System.out.println(OS);

        if (isWindows()) {
            System.out.println("This is Windows");
        } else if (isMac()) {
            System.out.println("This is Mac");
        } else if (isUnix()) {
            System.out.println("This is Unix or Linux");
        } else if (isSolaris()) {
            System.out.println("This is Solaris");
        } else {
            System.out.println("Your OS is not support!!");
        }
    }

    public static boolean isWindows() {
        return OS.contains("win");
    }

    public static boolean isMac() {
        return OS.contains("mac");
    }

    public static boolean isUnix() {
        return (OS.contains("nix") || OS.contains("nux") || OS.contains("aix"));
    }

    public static boolean isSolaris() {
        return OS.contains("sunos");
    }
    public static String getOS(){
        if (isWindows()) {
            return "win";
        } else if (isMac()) {
            return "osx";
        } else if (isUnix()) {
            return "uni";
        } else if (isSolaris()) {
            return "sol";
        } else {
            return "err";
        }
    }

}

try adding

<meta http-equiv="X-UA-Compatible" content="IE=edge"> 

right after the opening head tag

No, an alt attribute (it would be an attribute, not a tag) is not allowed for an a element in any HTML specification or draft. And it does not seem to be recognized by any browser either as having any significance.

It’s a bit mystery why people try to use it, then, but the probable explanation is that they are doing so in analog with alt attribute for img elements, expecting to see a “tooltip” on mouseover. There are two things wrong with this. First, each element has attributes of its own, defined in the specs for each element. Second, the “tooltip” rendering of alt attributes in some ancient browsers is/was a quirk or even a bug, rather than something to be expected; the alt attribute is supposed to be presented to the user if and only if the image itself is not presented, for whatever reason.

To create a “tooltip”, use the title attribute instead or, much better, Google for "CSS tooltips" and use CSS-based tooltips of your preference (they can be characterized as hidden “layers” that become visible on mouseover).

You can do pretty much the same as in JavaScript. Try this:

Console.WriteLine(mon + "." + da + "." + yer);

Or you can use WriteLine as if it were a string.Format statement by doing:

Console.WriteLine("{0}.{1}.{2}", mon, da, yer);

which is equivalent to:

string.Format("{0}.{1}.{2}", mon, da, yer);

The number of parameters can be infinite, just make sure you correctly index those numbers (starting at 0).

You can do something like this:

    public myform()
    {
         InitializeComponent(); // this will be called in ComboBox ComboBox = new System.Windows.Forms.ComboBox();
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        // TODO: This line of code loads data into the 'myDataSet.someTable' table. You can move, or remove it, as needed.
        this.myTableAdapter.Fill(this.myDataSet.someTable);
        comboBox1.SelectedItem = null;
        comboBox1.SelectedText = "--select--";           
    }

The onclick attribute on your anchor tag is going to call a client-side function. (This is what you would use if you wanted to call a javascript function when the link is clicked.)

What you want is a server-side control, like the LinkButton:

<asp:LinkButton ID="lnkTutorial" runat="server" Text="Tutorial" OnClick="displayTutorial_Click"/>

This has an OnClick attribute that will call the method in your code behind.

Looking further into your code, it looks like you're just trying to open a different tutorial based on access level of the user. You don't need an event handler for this at all. A far better approach would be to just set the end point of your LinkButton control in the code behind.

protected void Page_Load(object sender, EventArgs e)
{
    userinfo = (UserInfo)Session["UserInfo"];

    if (userinfo.user == "Admin")
    {
        lnkTutorial.PostBackUrl = "help/AdminTutorial.html";
    }
    else
    {
        lnkTutorial.PostBackUrl = "help/UserTutorial.html";
    }
}

Really, it would be best to check that you actually have a user first.

protected void Page_Load(object sender, EventArgs e)
{
    if (Session["UserInfo"] != null && ((UserInfo)Session["UserInfo"]).user == "Admin")
    {
        lnkTutorial.PostBackUrl = "help/AdminTutorial.html";
    }
    else
    {
        lnkTutorial.PostBackUrl = "help/UserTutorial.html";
    }
}

might fail working with link_directories, then add each static library like following:

target_link_libraries(foo /path_to_static_library/libbar.a)

Try this

 SELECT *
 FROM people P 
 where P.IDNo in (SELECT DISTINCT IDNo
              FROM people)

Spark SQL supports join on tuple of columns when in parentheses, like

... WHERE (list_of_columns1) = (list_of_columns2)

which is a way shorter than specifying equal expressions (=) for each pair of columns combined by a set of "AND"s.

For example:

SELECT a,b,c
FROM    tab1 t1
WHERE 
   NOT EXISTS
   (    SELECT 1
        FROM    t1_except_t2_df e
        WHERE (t1.a, t1.b, t1.c) = (e.a, e.b, e.c)
   )

instead of

SELECT a,b,c
FROM    tab1 t1
WHERE 
   NOT EXISTS
   (    SELECT 1
        FROM    t1_except_t2_df e
        WHERE t1.a=e.a AND t1.b=e.b AND t1.c=e.c
   )

which is less readable too especially when list of columns is big and you want to deal with NULLs easily.

Here a single example using Duration and TimeUnit to get 'hh:mm:ss' format.

Duration dur = Duration.between(localDateTimeIni, localDateTimeEnd);
long millis = dur.toMillis();

String.format("%02d:%02d:%02d", 
        TimeUnit.MILLISECONDS.toHours(millis),
        TimeUnit.MILLISECONDS.toMinutes(millis) - 
        TimeUnit.HOURS.toMinutes(TimeUnit.MILLISECONDS.toHours(millis)),
        TimeUnit.MILLISECONDS.toSeconds(millis) - 
        TimeUnit.MINUTES.toSeconds(TimeUnit.MILLISECONDS.toMinutes(millis)));

If someone still needs it (like I do).

The specified role_name must be a role that the current session user is a member of. https://www.postgresql.org/docs/10/sql-set-role.html

We need to make the current session user a member of the role:

create role myrole;
set role myrole;
grant myrole to myuser;
set role myrole;

produces:

Role ROLE created.


Error starting at line : 4 in command -
set role myrole
Error report -
ERROR: permission denied to set role "myrole"

Grant succeeded.


Role SET succeeded.

From yanl (yet-another-library) sklearn.metrics has an r2_score function;

from sklearn.metrics import r2_score

coefficient_of_dermination = r2_score(y, p(x))

I would avoid to do a query for each entry.

if(is_array($EMailArr)){

    $sql = "INSERT INTO email_list (R_ID, EMAIL, NAME) values ";

    $valuesArr = array();
    foreach($EMailArr as $row){

        $R_ID = (int) $row['R_ID'];
        $email = mysql_real_escape_string( $row['email'] );
        $name = mysql_real_escape_string( $row['name'] );

        $valuesArr[] = "('$R_ID', '$email', '$name')";
    }

    $sql .= implode(',', $valuesArr);

    mysql_query($sql) or exit(mysql_error()); 
}

here's the incantation for nginx, inside a

location / {
    # Simple requests
    if ($request_method ~* "(GET|POST)") {
      add_header "Access-Control-Allow-Origin"  *;
    }

    # Preflighted requests
    if ($request_method = OPTIONS ) {
      add_header "Access-Control-Allow-Origin"  *;
      add_header "Access-Control-Allow-Methods" "GET, POST, OPTIONS, HEAD";
      add_header "Access-Control-Allow-Headers" "Authorization, Origin, X-Requested-With, Content-Type, Accept";
    }

}

As you mentioned on @Developer 's answer, I would probably HTML-encode on user input. If you are worried about XSS, you probably never need the user's input in it's original form, so you might as well escape it (and replace spaces and newlines while you are at it).

Note that escaping on input means you should either use @Html.Raw or create an MvcHtmlString to render that particular input.

You can also try

System.Security.SecurityElement.Escape(userInput)

but I think it won't escape spaces either. So in that case, I suggest just do a .NET

System.Security.SecurityElement.Escape(userInput).Replace(" ", "&nbsp;").Replace("\n", "<br>")

on user input. And if you want to dig deeper into usability, perhaps you can do an XML parse of the user's input (or play with regular expressions) to only allow a predefined set of tags. For instance, allow

<p>, <span>, <strong>

... but don't allow

<script> or <iframe>

There are various ways to get the Django version. You can use any one of the following given below according to your requirements.

Note: If you are working in a virtual environment then please load your python environment

Terminal Commands

1. python -m django --version
2. django-admin --version or django-admin.py version
3. ./manage.py --version or python manage.py --version
4. pip freeze | grep Django
5. python -c "import django; print(django.get_version())"
6. python manage.py runserver --version

Django Shell Commands

1. import django django.get_version() OR django.VERSION
2. from django.utils import version version.get_version() OR version.get_complete_version()
3. import pkg_resources pkg_resources.get_distribution('django').version

(Feel free to modify this answer, if you have some kind of correction or you want to add more related information.)

how about something like this...

var directory = new DirectoryInfo("C:\\MyDirectory");
var myFile = (from f in directory.GetFiles()
             orderby f.LastWriteTime descending
             select f).First();

// or...
var myFile = directory.GetFiles()
             .OrderByDescending(f => f.LastWriteTime)
             .First();

In my case a system crash had caused the HEAD file to become corrupted. This guide shows how to fix that and other problems you may encounter.

https://git.seveas.net/repairing-and-recovering-broken-git-repositories.html

You're right that the SD Card directory is /sdcard but you shouldn't be hard coding it. Instead, make a call to Environment.getExternalStorageDirectory() to get the directory:

File sdDir = Environment.getExternalStorageDirectory();

If you haven't done so already, you will need to give your app the correct permission to write to the SD Card by adding the line below to your Manifest:

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

There is one more reason for such failure which I came to know when mine failed

• You might be working with a lot of data and your RAM is full

This might not apply in this case but it also throws the same error and since this question comes up on top for this error, I have added this answer here.

I believe you can use a case statement in a where clause, here is how I do it:

Select 
ProductID
OrderNo,
OrderType,
OrderLineNo
From Order_Detail
Where ProductID in (
Select Case when (@Varibale1 != '') 
then (Select ProductID from Product P Where .......)
Else (Select ProductID from Product)
End as ProductID
)

This method has worked for me time and again. try it!

Searching the simplest solution of this question in Django and Python I found you can use builtin theirs functions to escape/unescape html code.

Example

I saved your html code in scraped_html and clean_html:

scraped_html = (
    '<img class="size-medium wp-image-113" '
    'style="margin-left: 15px;" title="su1" '
    'src="http://blah.org/wp-content/uploads/2008/10/su1-300x194.jpg" '
    'alt="" width="300" height="194" />'
)
clean_html = (
    '<img class="size-medium wp-image-113" style="margin-left: 15px;" '
    'title="su1" src="http://blah.org/wp-content/uploads/2008/10/su1-300x194.jpg" '
    'alt="" width="300" height="194" />'
)

Django

You need Django >= 1.0

unescape

To unescape your scraped html code you can use django.utils.text.unescape_entities which:

Convert all named and numeric character references to the corresponding unicode characters.

>>> from django.utils.text import unescape_entities
>>> clean_html == unescape_entities(scraped_html)
True

escape

To escape your clean html code you can use django.utils.html.escape which:

Returns the given text with ampersands, quotes and angle brackets encoded for use in HTML.

>>> from django.utils.html import escape
>>> scraped_html == escape(clean_html)
True

Python

You need Python >= 3.4

unescape

To unescape your scraped html code you can use html.unescape which:

Convert all named and numeric character references (e.g. >, >, &x3e;) in the string s to the corresponding unicode characters.

>>> from html import unescape
>>> clean_html == unescape(scraped_html)
True

escape

To escape your clean html code you can use html.escape which:

Convert the characters &, < and > in string s to HTML-safe sequences.

>>> from html import escape
>>> scraped_html == escape(clean_html)
True

I have got same question, but because i did not find 'performance metrics' for use case similar to mine, i've done some more sample code. On my hardware and Java 6 & 7, the difference between instanceof and switch on 10mln iterations is

for 10 child classes - instanceof: 1200ms vs switch: 470ms
for 5 child classes  - instanceof:  375ms vs switch: 204ms

So, instanceof is really slower, especially on huge number of if-else-if statements, however difference will be negligible within real application.

import java.util.Date;

public class InstanceOfVsEnum {

    public static int c1, c2, c3, c4, c5, c6, c7, c8, c9, cA;

    public static class Handler {
        public enum Type { Type1, Type2, Type3, Type4, Type5, Type6, Type7, Type8, Type9, TypeA }
        protected Handler(Type type) { this.type = type; }
        public final Type type;

        public static void addHandlerInstanceOf(Handler h) {
            if( h instanceof H1) { c1++; }
            else if( h instanceof H2) { c2++; }
            else if( h instanceof H3) { c3++; }
            else if( h instanceof H4) { c4++; }
            else if( h instanceof H5) { c5++; }
            else if( h instanceof H6) { c6++; }
            else if( h instanceof H7) { c7++; }
            else if( h instanceof H8) { c8++; }
            else if( h instanceof H9) { c9++; }
            else if( h instanceof HA) { cA++; }
        }

        public static void addHandlerSwitch(Handler h) {
            switch( h.type ) {
                case Type1: c1++; break;
                case Type2: c2++; break;
                case Type3: c3++; break;
                case Type4: c4++; break;
                case Type5: c5++; break;
                case Type6: c6++; break;
                case Type7: c7++; break;
                case Type8: c8++; break;
                case Type9: c9++; break;
                case TypeA: cA++; break;
            }
        }
    }

    public static class H1 extends Handler { public H1() { super(Type.Type1); } }
    public static class H2 extends Handler { public H2() { super(Type.Type2); } }
    public static class H3 extends Handler { public H3() { super(Type.Type3); } }
    public static class H4 extends Handler { public H4() { super(Type.Type4); } }
    public static class H5 extends Handler { public H5() { super(Type.Type5); } }
    public static class H6 extends Handler { public H6() { super(Type.Type6); } }
    public static class H7 extends Handler { public H7() { super(Type.Type7); } }
    public static class H8 extends Handler { public H8() { super(Type.Type8); } }
    public static class H9 extends Handler { public H9() { super(Type.Type9); } }
    public static class HA extends Handler { public HA() { super(Type.TypeA); } }

    final static int cCycles = 10000000;

    public static void main(String[] args) {
        H1 h1 = new H1();
        H2 h2 = new H2();
        H3 h3 = new H3();
        H4 h4 = new H4();
        H5 h5 = new H5();
        H6 h6 = new H6();
        H7 h7 = new H7();
        H8 h8 = new H8();
        H9 h9 = new H9();
        HA hA = new HA();

        Date dtStart = new Date();
        for( int i = 0; i < cCycles; i++ ) {
            Handler.addHandlerInstanceOf(h1);
            Handler.addHandlerInstanceOf(h2);
            Handler.addHandlerInstanceOf(h3);
            Handler.addHandlerInstanceOf(h4);
            Handler.addHandlerInstanceOf(h5);
            Handler.addHandlerInstanceOf(h6);
            Handler.addHandlerInstanceOf(h7);
            Handler.addHandlerInstanceOf(h8);
            Handler.addHandlerInstanceOf(h9);
            Handler.addHandlerInstanceOf(hA);
        }
        System.out.println("Instance of - " + (new Date().getTime() - dtStart.getTime()));

        dtStart = new Date();
        for( int i = 0; i < cCycles; i++ ) {
            Handler.addHandlerSwitch(h1);
            Handler.addHandlerSwitch(h2);
            Handler.addHandlerSwitch(h3);
            Handler.addHandlerSwitch(h4);
            Handler.addHandlerSwitch(h5);
            Handler.addHandlerSwitch(h6);
            Handler.addHandlerSwitch(h7);
            Handler.addHandlerSwitch(h8);
            Handler.addHandlerSwitch(h9);
            Handler.addHandlerSwitch(hA);
        }
        System.out.println("Switch of - " + (new Date().getTime() - dtStart.getTime()));
    }
}

Query objects in Mongo by default AND expressions together. Mongo currently does not include an OR operator for such queries, however there are ways to express such queries.

Use "in" or "where".

Its gonna be something like this:

db.mycollection.find( { $where : function() { 
return ( this.startTime < Now() && this.expireTime > Now() || this.expireTime == null ); } } );

Tests

On the Tests class we will add an @XmlRootElement annotation. Doing this will let your JAXB implementation know that when a document starts with this element that it should instantiate this class. JAXB is configuration by exception, this means you only need to add annotations where your mapping differs from the default. Since the testData property differs from the default mapping we will use the @XmlElement annotation. You may find the following tutorial helpful: http://wiki.eclipse.org/EclipseLink/Examples/MOXy/GettingStarted

package forum11221136;

import javax.xml.bind.annotation.*;

@XmlRootElement
public class Tests {

    TestData testData;

    @XmlElement(name="test-data")
    public TestData getTestData() {
        return testData;
    }

    public void setTestData(TestData testData) {
        this.testData = testData;
    }

}

TestData

On this class I used the @XmlType annotation to specify the order in which the elements should be ordered in. I added a testData property that appeared to be missing. I also used an @XmlElement annotation for the same reason as in the Tests class.

package forum11221136;

import java.util.List;
import javax.xml.bind.annotation.*;

@XmlType(propOrder={"title", "book", "count", "testData"})
public class TestData {
    String title;
    String book;
    String count;
    List<TestData> testData;

    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getBook() {
        return book;
    }
    public void setBook(String book) {
        this.book = book;
    }
    public String getCount() {
        return count;
    }
    public void setCount(String count) {
        this.count = count;
    }
    @XmlElement(name="test-data")
    public List<TestData> getTestData() {
        return testData;
    }
    public void setTestData(List<TestData> testData) {
        this.testData = testData;
    }
}

Demo

Below is an example of how to use the JAXB APIs to read (unmarshal) the XML and populate your domain model and then write (marshal) the result back to XML.

package forum11221136;

import java.io.File;
import javax.xml.bind.*;

public class Demo {

    public static void main(String[] args) throws Exception {
        JAXBContext jc = JAXBContext.newInstance(Tests.class);

        Unmarshaller unmarshaller = jc.createUnmarshaller();
        File xml = new File("src/forum11221136/input.xml");
        Tests tests = (Tests) unmarshaller.unmarshal(xml);

        Marshaller marshaller = jc.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        marshaller.marshal(tests, System.out);
    }

}

In general you cannot rely on a fixed pixel size for fonts, the user may be scaling the screen and the defaults are not always the same (depends on DPI settings of the screen etc.).

Maybe have a look at this (pixel to point) and this link.

But of course you can set the font size to px, so that you do know how many pixels the font actually is. This may help if you really need a fixed layout, but this practice reduces accessibility of your web site.

I know this is old, but this hung me up for awhile. The properties of the object in your list must be actual "properties", not just public members.

public class FileName
{        
     public string ThisFieldWorks {get;set;}
     public string ThisFieldDoesNot;
}

Try using the "%h" modifier:

scanf("%hu", &length);
        ^

ISO/IEC 9899:201x - 7.21.6.1-7

Specifies that a following d , i , o , u , x , X , or n conversion specifier applies to an argument with type pointer to short or unsigned short.

Let's say you have:

<a></a>

<(.*)> would match a></a where as <(.*?)> would match a. The latter stops after the first match of >. It checks for one or 0 matches of .* followed by the next expression.

The first expression <(.*)> doesn't stop when matching the first >. It will continue until the last match of >.

You don't need to use character codes; just use UTF-8 and put them in literally; like so:

??

If you absolutely must use the entites, they are ▲ and ▼, respectively.

you can compile the ui files like this

pyuic4 -x helloworld.ui -o helloworld.py

Check this out... I just got this working and it seems exactly what you are trying to do as well.

2 functions. One to select the table and copy it to the clipboard, and the second writes it to excel en masse. Just call write_to_excel() and put in your table id (or modify it to take it as an argument).

  function selectElementContents(el) {
        var body = document.body, range, sel;
        if (document.createRange && window.getSelection) {
            range = document.createRange();
            sel = window.getSelection();
            sel.removeAllRanges();
            try {
                range.selectNodeContents(el);
                sel.addRange(range);
            } catch (e) {
                range.selectNode(el);
                sel.addRange(range);
            }
        } else if (body.createTextRange) {
            range = body.createTextRange();
            range.moveToElementText(el);
            range.select();
        }
        range.execCommand("Copy");
    }

function write_to_excel() 
{
var tableID = "AllItems";
selectElementContents( document.getElementById(tableID) );

var excel = new ActiveXObject("Excel.Application");
// excel.Application.Visible = true; 
var wb=excel.WorkBooks.Add();
var ws=wb.Sheets("Sheet1");
ws.Cells(1,1).Select;
ws.Paste;
ws.DrawingObjects.Delete;
ws.Range("A1").Select
 excel.Application.Visible = true; 
}

Heavily influenced from: Select a complete table with Javascript (to be copied to clipboard)