We draw a solid line if and only if we have an ID-dependent relationship; otherwise it would be a dashed line.

Consider a weak but not ID-dependent relationship; We draw a dashed line because it is a weak relationship.

Diagrams are back as of the June 11 2019 release

Download latest

as stated:

Yes, we’ve heard the feedback; Database Diagrams is back.

SQL Server Management Studio (SSMS) 18.1 is now generally available

?? Latest Version Does Not Included It ??

Sadly, the last version of SSMS to have database diagrams as a feature was version v17.9.

Since that version, the newer preview versions starting at v18.* have, in their words "...feature has been deprecated".

Hope is not lost though, for one can still download and use v17.9 to use database diagrams which as an aside for this question is technically not a ER diagramming tool.

As of this writing it is unclear if the release version of 18 will have the feature, I hope so because it is a feature I use extensively.

I want to enhance Mr. Kamran Ali's answer with pictorial view.

Pictorial View is given step by step:

1. Go to "Database" Menu option
2. Select the "Reverse Engineer" option.

3. A wizard will come. Select from "Stored Connection" and press "Next" button.

4. Then "Next"..to.."Finish"

Enjoy :)

Disabling and Enabling All Foreign Keys

CREATE PROCEDURE pr_Disable_Triggers_v2
    @disable BIT = 1
AS
    DECLARE @sql VARCHAR(500)
        ,   @tableName VARCHAR(128)
        ,   @tableSchema VARCHAR(128)

    -- List of all tables
    DECLARE triggerCursor CURSOR FOR
        SELECT  t.TABLE_NAME AS TableName
            ,   t.TABLE_SCHEMA AS TableSchema
        FROM    INFORMATION_SCHEMA.TABLES t
        ORDER BY t.TABLE_NAME, t.TABLE_SCHEMA

    OPEN    triggerCursor
    FETCH NEXT FROM triggerCursor INTO @tableName, @tableSchema
    WHILE ( @@FETCH_STATUS = 0 )
    BEGIN

        SET @sql = 'ALTER TABLE ' + @tableSchema + '.[' + @tableName + '] '
        IF @disable = 1
            SET @sql = @sql + ' DISABLE TRIGGER ALL'
        ELSE
            SET @sql = @sql + ' ENABLE TRIGGER ALL'

        PRINT 'Executing Statement - ' + @sql
        EXECUTE ( @sql )

        FETCH NEXT FROM triggerCursor INTO @tableName, @tableSchema

    END

    CLOSE triggerCursor
    DEALLOCATE triggerCursor

First, the foreignKeyCursor cursor is declared as the SELECT statement that gathers the list of foreign keys and their table names. Next, the cursor is opened and the initial FETCH statement is executed. This FETCH statement will read the first row's data into the local variables @foreignKeyName and @tableName. When looping through a cursor, you can check the @@FETCH_STATUS for a value of 0, which indicates that the fetch was successful. This means the loop will continue to move forward so it can get each successive foreign key from the rowset. @@FETCH_STATUS is available to all cursors on the connection. So if you are looping through multiple cursors, it is important to check the value of @@FETCH_STATUS in the statement immediately following the FETCH statement. @@FETCH_STATUS will reflect the status for the most recent FETCH operation on the connection. Valid values for @@FETCH_STATUS are:

0 = FETCH was successful
-1 = FETCH was unsuccessful
-2 = the row that was fetched is missing

Inside the loop, the code builds the ALTER TABLE command differently depending on whether the intention is to disable or enable the foreign key constraint (using the CHECK or NOCHECK keyword). The statement is then printed as a message so its progress can be observed and then the statement is executed. Finally, when all rows have been iterated through, the stored procedure closes and deallocates the cursor.

see Disabling Constraints and Triggers from MSDN Magazine

Oracle used to have a component in SQL Developer called Data Modeler. It no longer exists in the product since at least 3.2.20.10.

It's now a separate download that you can find here:

http://www.oracle.com/technetwork/developer-tools/datamodeler/overview/index.html

Use Heredocs to output muli-line strings containing variables. The syntax is...

$string = <<<HEREDOC
   string stuff here
HEREDOC;

The "HEREDOC" part is like the quotes, and can be anything you want. The end tag must be the only thing on it's line i.e. no whitespace before or after, and must end in a colon. For more info check out the manual.

You have tried the wrong variable, ints is not the correct name of the argument.

public int Sum(params int[] customerssalary)
{
    return customerssalary.Sum();
}

public double Avg(params int[] customerssalary)
{
    return customerssalary.Average();
}

But do you think that these methods are really needed?

Abie, it all comes down to your use case. Rather than relying on someone else's account of their use case, feel free to post your use case to the rabbitmq-discuss list. Asking on twitter will get you some responses too. Best wishes, alexis

2018 and later solution:

Using viewport-relative units should make your life way easier, given we have the image of a cat:

Now we want this cat inside our code, while respecting aspect ratios:

img {_x000D_
  width: 100%;_x000D_
  height: auto;_x000D_
}

<img src="https://www.petmd.com/sites/default/files/petmd-cat-happy-10.jpg" alt="cat">

So far not really interesting, but what if we would like to change the cats width to be the maximum of 50% of the viewport?

img {_x000D_
  width: 100%;_x000D_
  height: auto;_x000D_
  /* Magic! */_x000D_
  max-width: 50vw;_x000D_
}

<img src="https://www.petmd.com/sites/default/files/petmd-cat-happy-10.jpg" alt="cat">

The same image, but now restricted to a maximum width of 50vw vw (=viewport width) means the image will be X width of the viewport, depending on the digit provided. This also works for height:

img {_x000D_
  width: auto;_x000D_
  height: 100%;_x000D_
  max-height: 20vh;_x000D_
}

<img src="https://www.petmd.com/sites/default/files/petmd-cat-happy-10.jpg" alt="cat">

This restricts the height of the image to a maximum of 20% of the viewport.

Global variables and static variables are automatically initialized to zero. If you have simply

char ZEROARRAY[1024];

at global scope it will be all zeros at runtime. But actually there is a shorthand syntax if you had a local array. If an array is partially initialized, elements that are not initialized receive the value 0 of the appropriate type. You could write:

char ZEROARRAY[1024] = {0};

The compiler would fill the unwritten entries with zeros. Alternatively you could use memset to initialize the array at program startup:

memset(ZEROARRAY, 0, 1024);

That would be useful if you had changed it and wanted to reset it back to all zeros.

In the command line type service apache2 status then hit enter. The result should say:

Apache2 is running (pid xxxx)

I have tested this below regular expression for single and multiple consecutive dots in domain name -

([A-Za-z0-9-_.]+@[A-Za-z0-9-_]+(?:\.[A-Za-z0-9]+)+)

and here are the examples which were completely fulfilled by above regex.

[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
[email protected]
Slow_User@example_domain.au.in
[email protected]

I have tried to cover maximum commonly used email id's validation by this above illustrated regex and yet working...

If you still know some consequentially used email id's had left here, please let me know in comment section!

The purpose of mocking types is to sever dependencies in order to isolate the test to a specific unit. Stubs are simple surrogates, while mocks are surrogates that can verify usage. A mocking framework is a tool that will help you generate stubs and mocks.

EDIT: Since the original wording mention "type mocking" I got the impression that this related to TypeMock. In my experience the general term is just "mocking". Please feel free to disregard the below info specifically on TypeMock.

TypeMock Isolator differs from most other mocking framework in that it works my modifying IL on the fly. That allows it to mock types and instances that most other frameworks cannot mock. To mock these types/instances with other frameworks you must provide your own abstractions and mock these.

TypeMock offers great flexibility at the expense of a clean runtime environment. As a side effect of the way TypeMock achieves its results you will sometimes get very strange results when using TypeMock.

The OnChange event is a good choice. But if a user select the same image, the event will not be triggered because the current value is the same as the previous.

The image is the same with a width changed, for example, and it should be uploaded to the server.

To prevent this problem you could to use the following code:

$(document).ready(function(){
    $("input[type=file]").click(function(){
        $(this).val("");
    });

    $("input[type=file]").change(function(){
        alert($(this).val());
    });
});

I was getting this error while using JQuery 1.10 and JQuery UI 1.8. I was able to resolve this error by updating to the latest JQuery UI 1.11.4.

Steps to update JQuery UI from Visual Studio:

• Navigate to Project or Solution
• Right click: "Manage NuGet Packages"
• On the left, click on "Installed Packages" tab
• Look for "JQuery UI (Combined library)" and click Update
• If found, Select it and click Update
• If not found, find it in "Online > nuget.org" tab on the left and click install. If the old version of Jquery UI version is still existing, it can be deleted from the project

You've got the same basic restriction when running a 32bit process under Win64. Your app runs in a 32 but subsystem which does its best to look like Win32, and this will include the memory restrictions for your process (lower 2GB for you, upper 2GB for the OS)

Yes, you can add a UNIQUE constraint after the fact. However, if you have non-unique entries in your table Postgres will complain about it until you correct them.

Ease of use

The analytic and synthetic reasons were already mentioned. For newcomers there's a more significant incentive to stop using the dated mysql_ functions.

Contemporary database APIs are just easier to use.

It's mostly the bound parameters which can simplify code. And with excellent tutorials (as seen above) the transition to PDO isn't overly arduous.

Rewriting a larger code base at once however takes time. Raison d'être for this intermediate alternative:

Equivalent pdo_* functions in place of mysql_*

Using <pdo_mysql.php> you can switch from the old mysql_ functions with minimal effort. It adds pdo_ function wrappers which replace their mysql_ counterparts.

1. Simply include_once("pdo_mysql.php"); in each invocation script that has to interact with the database.
   

2. Remove the mysql_ function prefix everywhere and replace it with pdo_.

   • mysql_connect() becomes pdo_connect()
   • mysql_query() becomes pdo_query()
   • mysql_num_rows() becomes pdo_num_rows()
   • mysql_insert_id() becomes pdo_insert_id()
   • mysql_fetch_array() becomes pdo_fetch_array()
   • mysql_fetch_assoc() becomes pdo_fetch_assoc()
   • mysql_real_escape_string() becomes pdo_real_escape_string()
   • and so on...
     
     

3. Your code will work alike and still mostly look the same:

   include_once("pdo_mysql.php"); 
   
   pdo_connect("localhost", "usrABC", "pw1234567");
   pdo_select_db("test");
   
   $result = pdo_query("SELECT title, html FROM pages");  
   
   while ($row = pdo_fetch_assoc($result)) {
       print "$row[title] - $row[html]";
   }
   

Et voilà.
Your code is using PDO.
Now it's time to actually utilize it.

Bound parameters can be easy to use

You just need a less unwieldy API.

pdo_query() adds very facile support for bound parameters. Converting old code is straightforward:

Move your variables out of the SQL string.

• Add them as comma delimited function parameters to pdo_query().
• Place question marks ? as placeholders where the variables were before.
• Get rid of ' single quotes that previously enclosed string values/variables.

The advantage becomes more obvious for lengthier code.

Often string variables aren't just interpolated into SQL, but concatenated with escaping calls in between.

pdo_query("SELECT id, links, html, title, user, date FROM articles
   WHERE title='" . pdo_real_escape_string($title) . "' OR id='".
   pdo_real_escape_string($title) . "' AND user <> '" .
   pdo_real_escape_string($root) . "' ORDER BY date")

With ? placeholders applied you don't have to bother with that:

pdo_query("SELECT id, links, html, title, user, date FROM articles
   WHERE title=? OR id=? AND user<>? ORDER BY date", $title, $id, $root)

Remember that pdo_* still allows either or.
Just don't escape a variable and bind it in the same query.

• The placeholder feature is provided by the real PDO behind it.
• Thus also allowed :named placeholder lists later.

More importantly you can pass $_REQUEST[] variables safely behind any query. When submitted <form> fields match the database structure exactly it's even shorter:

pdo_query("INSERT INTO pages VALUES (?,?,?,?,?)", $_POST);

So much simplicity. But let's get back to some more rewriting advises and technical reasons on why you may want to get rid of mysql_ and escaping.

Fix or remove any oldschool sanitize() function

Once you have converted all mysql_ calls to pdo_query with bound params, remove all redundant pdo_real_escape_string calls.

In particular you should fix any sanitize or clean or filterThis or clean_data functions as advertised by dated tutorials in one form or the other:

function sanitize($str) {
   return trim(strip_tags(htmlentities(pdo_real_escape_string($str))));
}

Most glaring bug here is the lack of documentation. More significantly the order of filtering was in exactly the wrong order.

• Correct order would have been: deprecatedly stripslashes as the innermost call, then trim, afterwards strip_tags, htmlentities for output context, and only lastly the _escape_string as its application should directly preceed the SQL intersparsing.

• But as first step just get rid of the _real_escape_string call.

• You may have to keep the rest of your sanitize() function for now if your database and application flow expect HTML-context-safe strings. Add a comment that it applies only HTML escaping henceforth.

• String/value handling is delegated to PDO and its parameterized statements.

• If there was any mention of stripslashes() in your sanitize function, it may indicate a higher level oversight.

  • That was commonly there to undo damage (double escaping) from the deprecated magic_quotes. Which however is best fixed centrally, not string by string.

  • Use one of the userland reversal approaches. Then remove the stripslashes() in the sanitize function.

  Historic note on magic_quotes. That feature is rightly deprecated. It's often incorrectly portrayed as failed security feature however. But magic_quotes are as much a failed security feature as tennis balls have failed as nutrition source. That simply wasn't their purpose.

  The original implementation in PHP2/FI introduced it explicitly with just "quotes will be automatically escaped making it easier to pass form data directly to msql queries". Notably it was accidentially safe to use with mSQL, as that supported ASCII only.
  Then PHP3/Zend reintroduced magic_quotes for MySQL and misdocumented it. But originally it was just a convenience feature, not intend for security.

How prepared statements differ

When you scramble string variables into the SQL queries, it doesn't just get more intricate for you to follow. It's also extraneous effort for MySQL to segregate code and data again.

SQL injections simply are when data bleeds into code context. A database server can't later spot where PHP originally glued variables inbetween query clauses.

With bound parameters you separate SQL code and SQL-context values in your PHP code. But it doesn't get shuffled up again behind the scenes (except with PDO::EMULATE_PREPARES). Your database receives the unvaried SQL commands and 1:1 variable values.

While this answer stresses that you should care about the readability advantages of dropping mysql_. There's occasionally also a performance advantage (repeated INSERTs with just differing values) due to this visible and technical data/code separation.

Beware that parameter binding still isn't a magic one-stop solution against all SQL injections. It handles the most common use for data/values. But can't whitelist column name / table identifiers, help with dynamic clause construction, or just plain array value lists.

Hybrid PDO use

These pdo_* wrapper functions make a coding-friendly stop-gap API. (It's pretty much what MYSQLI could have been if it wasn't for the idiosyncratic function signature shift). They also expose the real PDO at most times.
Rewriting doesn't have to stop at using the new pdo_ function names. You could one by one transition each pdo_query() into a plain $pdo->prepare()->execute() call.

It's best to start at simplifying again however. For example the common result fetching:

$result = pdo_query("SELECT * FROM tbl");
while ($row = pdo_fetch_assoc($result)) {

Can be replaced with just an foreach iteration:

foreach ($result as $row) {

Or better yet a direct and complete array retrieval:

$result->fetchAll();

You'll get more helpful warnings in most cases than PDO or mysql_ usually provide after failed queries.

Other options

So this hopefully visualized some practical reasons and a worthwile pathway to drop mysql_.

Just switching to pdo doesn't quite cut it. pdo_query() is also just a frontend onto it.

Unless you also introduce parameter binding or can utilize something else from the nicer API, it's a pointless switch. I hope it's portrayed simple enough to not further the discouragement to newcomers. (Education usually works better than prohibition.)

While it qualifies for the simplest-thing-that-could-possibly-work category, it's also still very experimental code. I just wrote it over the weekend. There's a plethora of alternatives however. Just google for PHP database abstraction and browse a little. There always have been and will be lots of excellent libraries for such tasks.

If you want to simplify your database interaction further, mappers like Paris/Idiorm are worth a try. Just like nobody uses the bland DOM in JavaScript anymore, you don't have to babysit a raw database interface nowadays.

class Program
{
    static void Main(string[] args)
    {
        a a1 = new b();  
        a1.print();  
    }
}
class a
{
    public a()
    {
        Console.WriteLine("base class object initiated");
    }
    public void print()
    {
        Console.WriteLine("base");
    }
}
class b:a
{
    public b()
    {
        Console.WriteLine("child class object");
    }
    public void print1()
    {
        Console.WriteLine("derived");
    }
}

}

when we create a child class object,the base class object is auto initiated so base class reference variable can point to child class object.

but not vice versa because a child class reference variable can not point to base class object because no child class object is created.

and also notice that base class reference variable can only call base class member.

With sqlserver 2005 and later you can use regex-like character classes with LIKE operator. See here.

To check if a string is a non-negative integer (it is a sequence of decimal digits) you can test that it doesn't contain other characters.

SELECT numstr
  FROM table
 WHERE numstr NOT LIKE '%[^0-9]%'

Note1: This will return empty strings too.

Note2: Using LIKE '%[0-9]%' will return any string that contains at least a digit.

See fiddle

As all answers posted above are well explained, I want to add something which I faced today.

When you export something using exports then you have to use it with variable. Like,

File1.js

exports.a = 5;

In another file

File2.js

const A = require("./File1.js");
console.log(A.a);

and using module.exports

File1.js

module.exports.a = 5;

In File2.js

const A = require("./File1.js");
console.log(A.a);

and default module.exports

File1.js

module.exports = 5;

in File2.js

const A = require("./File2.js");
console.log(A);

Note that sometimes you will want to use the class type name inside its own definition, for example when using Python Typing module, e.g.

class Tree:
    def __init__(self, left: Tree, right: Tree):
        self.left = left
        self.right = right

This will also result in

NameError: name 'Tree' is not defined

That's because the class has not been defined yet at this point. The workaround is using so called Forward Reference, i.e. wrapping a class name in a string, i.e.

class Tree:
    def __init__(self, left: 'Tree', right: 'Tree'):
        self.left = left
        self.right = right

select * from yourtable where created < now() and created > '2011-04-25 04:00:00'

You can use axis:

> axis(side=1, at=c(0:23))

That is, something like this:

plot(0:23, d, type='b', axes=FALSE)
axis(side=1, at=c(0:23))
axis(side=2, at=seq(0, 600, by=100))
box()

An entity manager can only be injected in classes running inside a transaction. In other words, it can only be injected in a EJB. Other classe must use an EntityManagerFactory to create and destroy an EntityManager.

Since your TestService is not an EJB, the annotation @PersistenceContext is simply ignored. Not only that, in JavaEE 5, it's not possible to inject an EntityManager nor an EntityManagerFactory in a JAX-RS Service. You have to go with a JavaEE 6 server (JBoss 6, Glassfish 3, etc).

Here's an example of injecting an EntityManagerFactory:

package com.test.service;

import java.util.*;
import javax.persistence.*;
import javax.ws.rs.*;

@Path("/service")
public class TestService {

    @PersistenceUnit(unitName = "test")
    private EntityManagerFactory entityManagerFactory;

    @GET
    @Path("/get")
    @Produces("application/json")
    public List get() {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        try {
            return entityManager.createQuery("from TestEntity").getResultList();
        } finally {
            entityManager.close();
        }
    }
}

The easiest way to go here is to declare your service as a EJB 3.1, assuming you're using a JavaEE 6 server.

Related question: Inject an EJB into JAX-RS (RESTful service)

You can also refresh the configuration in it's entirety:

ConnectionStringSettings importToConnectionString = currentConfiguration.ConnectionStrings.ConnectionStrings[newName];

if (importToConnectionString == null)
{
    importToConnectionString = new ConnectionStringSettings();
    importToConnectionString.ConnectionString = importFromConnectionString.ConnectionString;
    importToConnectionString.ProviderName = importFromConnectionString.ProviderName;
    importToConnectionString.Name = newName;
    currentConfiguration.ConnectionStrings.ConnectionStrings.Add(importToConnectionString);
}
else
{
    importToConnectionString.ConnectionString = importFromConnectionString.ConnectionString;
    importToConnectionString.ProviderName = importFromConnectionString.ProviderName;
}

Properties.Settings.Default.Reload();

If the second row has the same pattern as the first row, you just need edit first row manually, then you position your mouse pointer to the bottom-right corner, in the mean time, press ctrl key to drag the cell down. the pattern should be copied automatically.

An 'architect' is the title given to someone who can design multiple layers of applications that work together well at a high level. Anything that gets into a generic type of 'architect' without a specific type of technology (i.e. "Solutions", "Applications", "Business", etc) is marketing speak.

No, and your compiler already gave you a comprehensive explanation.

But you could do this:

constexpr char constString[] = "constString";

At runtime, this can be used to construct a std::string when needed.

The below css works for both Chrome and Firefox

input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type=number] {
    -moz-appearance:textfield;
}

myMap.map(([x,_]) => {x});

Above should also work

Here is example for Simple Implementation of Endless Scrolling RecyclerView using a Simple Library compiled from the various sources.

Add this line in build.gradle

implementation 'com.hereshem.lib:awesomelib:2.0.1'

Create RecyclerView Layout in Activity with

<com.hereshem.lib.recycler.MyRecyclerView
        android:id="@+id/recycler"
        app:layoutManager="LinearLayoutManager"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

Create a ViewHolder by passing the class it supports

public static class EVHolder extends MyViewHolder<Events> {
    TextView date, title, summary;
    public EVHolder(View v) {
        super(v);
        date = v.findViewById(R.id.date);
        title = v.findViewById(R.id.title);
        summary = v.findViewById(R.id.summary);
    }
    @Override
    public void bindView(Events c) {
        date.setText(c.date);
        title.setText(c.title);
        summary.setText(c.summary);
    }
}

Create Items List variable and adapters with very few lines by passing items, class and layout in the adapter

List<Events> items = new ArrayList<>();
MyRecyclerView recycler = findViewById(R.id.recycler);
RecyclerViewAdapter adapter = new RecyclerViewAdapter(this, items, EVHolder.class, R.layout.row_event);
recycler.setAdapter(adapter);

ClickListener and LoadMore Listener can be added with following lines

recycler.setOnItemClickListener(new MyRecyclerView.OnItemClickListener() {
    @Override
    public void onItemClick(int position) {
        Toast.makeText(MainActivity.this, "Recycler Item Clicked " + position, Toast.LENGTH_SHORT).show();
    }
});

recycler.setOnLoadMoreListener(new MyRecyclerView.OnLoadMoreListener() {
    @Override
    public void onLoadMore() {
        loadData();
    }
});
loadData();

After the data is loaded this must be called

recycler.loadComplete();

When no LoadMore is required LoadMore layout can be hidden by calling

recycler.hideLoadMore();

More example can be found here

Hope this helps :)

Complementing the above answers and also "Parroting" from the Windows Dev Center documentation,

The Winsock2.h header file internally includes core elements from the Windows.h header file, so there is not usually an #include line for the Windows.h header file in Winsock applications. If an #include line is needed for the Windows.h header file, this should be preceded with the #define WIN32_LEAN_AND_MEAN macro. For historical reasons, the Windows.h header defaults to including the Winsock.h header file for Windows Sockets 1.1. The declarations in the Winsock.h header file will conflict with the declarations in the Winsock2.h header file required by Windows Sockets 2.0. The WIN32_LEAN_AND_MEAN macro prevents the Winsock.h from being included by the Windows.h header ..

Use sum() in place of count()

Try below:

SELECT
    ccc_news . * , 
    SUM(if(ccc_news_comments.id = 'approved', 1, 0)) AS comments
FROM
    ccc_news
    LEFT JOIN
        ccc_news_comments
    ON
        ccc_news_comments.news_id = ccc_news.news_id
WHERE
    `ccc_news`.`category` = 'news_layer2'
    AND `ccc_news`.`status` = 'Active'
GROUP BY
    ccc_news.news_id
ORDER BY
    ccc_news.set_order ASC
LIMIT 20 

The question is tagged "php" so as Tom said, the way to do that would look like this:

date('Y-m-d', strtotime('next tuesday'));

The shortest:

command || exit /b

If you need, you can set the exit code:

command || exit /b 666

And you can also log:

command || echo ERROR && exit /b

Including this answer because this was the top result for "invalid column name sql" on google and I didn't see this answer here. In my case, I was getting Invalid Column Name, Id1 because I had used the wrong id in my .HasForeignKey statement in my Entity Framework C# code. Once I changed it to match the .HasOne() object's id, the error was gone.

In this answer, will be two sections: Two unique solutions, and a graph of speed for specific solutions.

Removing Duplicate Items

Most of these answers only remove duplicate items which are hashable, but this question doesn't imply it doesn't just need hashable items, meaning I'll offer some solutions which don't require hashable items.

collections.Counter is a powerful tool in the standard library which could be perfect for this. There's only one other solution which even has Counter in it. However, that solution is also limited to hashable keys.

To allow unhashable keys in Counter, I made a Container class, which will try to get the object's default hash function, but if it fails, it will try its identity function. It also defines an eq and a hash method. This should be enough to allow unhashable items in our solution. Unhashable objects will be treated as if they are hashable. However, this hash function uses identity for unhashable objects, meaning two equal objects that are both unhashable won't work. I suggest you override this, and changing it to use the hash of an equivalent mutable type (like using hash(tuple(my_list)) if my_list is a list).

I also made two solutions. Another solution which keeps the order of the items, using a subclass of both OrderedDict and Counter which is named 'OrderedCounter'. Now, here are the functions:

from collections import OrderedDict, Counter

class Container:
    def __init__(self, obj):
        self.obj = obj
    def __eq__(self, obj):
        return self.obj == obj
    def __hash__(self):
        try:
            return hash(self.obj)
        except:
            return id(self.obj)

class OrderedCounter(Counter, OrderedDict):
     'Counter that remembers the order elements are first encountered'

     def __repr__(self):
         return '%s(%r)' % (self.__class__.__name__, OrderedDict(self))

     def __reduce__(self):
         return self.__class__, (OrderedDict(self),)

def remd(sequence):
    cnt = Counter()
    for x in sequence:
        cnt[Container(x)] += 1
    return [item.obj for item in cnt]

def oremd(sequence):
    cnt = OrderedCounter()
    for x in sequence:
        cnt[Container(x)] += 1
    return [item.obj for item in cnt]

remd is non-ordered sorting, oremd is ordered sorting. You can clearly tell which one is faster, but I'll explain anyways. The non-ordered sorting is slightly faster. It keeps less data, since it doesn't need order.

Now, I also wanted to show the speed comparisons of each answer. So, I'll do that now.

Which Function is the Fastest?

For removing duplicates, I gathered 10 functions from a few answers. I calculated the speed of each function and put it into a graph using matplotlib.pyplot.

I divided this into three rounds of graphing. A hashable is any object which can be hashed, an unhashable is any object which cannot be hashed. An ordered sequence is a sequence which preserves order, an unordered sequence does not preserve order. Now, here are a few more terms:

Unordered Hashable was for any method which removed duplicates, which didn't necessarily have to keep the order. It didn't have to work for unhashables, but it could.

Ordered Hashable was for any method which kept the order of the items in the list, but it didn't have to work for unhashables, but it could.

Ordered Unhashable was any method which kept the order of the items in the list, and worked for unhashables.

On the y-axis is the amount of seconds it took.

On the x-axis is the number the function was applied to.

We generated sequences for unordered hashables and ordered hashables with the following comprehension: [list(range(x)) + list(range(x)) for x in range(0, 1000, 10)]

For ordered unhashables: [[list(range(y)) + list(range(y)) for y in range(x)] for x in range(0, 1000, 10)]

Note there is a 'step' in the range because without it, this would've taken 10x as long. Also because in my personal opinion, I thought it might've looked a little easier to read.

Also note the keys on the legend are what I tried to guess as the most vital parts of the function. As for what function does the worst or best? The graph speaks for itself.

With that settled, here are the graphs.

Unordered Hashables

(Zoomed in)

Ordered Hashables

(Zoomed in)

Ordered Unhashables

(Zoomed in)

For GitHub

• Reset your commits (HARD) in your local repository
• Create a new branch
• Push the new branch
• Delete OLD branch (Make new one as the default branch if you are deleting the master branch)

I just use the simplest solution, but it works in all browsers:

<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>center a div within a div?</title>
        <style type="text/css">
            *{
                margin: 0;
                padding: 0;
            }

            #outer{
                width: 80%;
                height: 500px;
                background-color: #003;
                margin: 0 auto;
            }

            #outer p{
                color: #FFF;
                text-align: center;
            }

            #inner{
                background-color: #901;
                width: 50%;
                height: 100px;
                margin: 0 auto;

            }

            #inner p{
                color: #FFF;
                text-align: center;
            }
        </style>
    </head>

    <body>
        <div id="outer"><p>this is the outer div</p>
            <div id="inner">
                <p>this is the inner div</p>
            </div>
        </div>
    </body>
</html>

The Unix utility diff is meant for exactly this purpose.

$ diff -u file1 file2 > file3

See the manual and the Internet for options, different output formats, etc.

CAUSE

There could be multiple reasons for this error.

• jQuery DataTables library is missing.
• jQuery library is loaded after jQuery DataTables.
• Multiple versions of jQuery library is loaded.

SOLUTION

Include only one version of jQuery library version 1.7 or newer before jQuery DataTables.

For example:

<script src="js/jquery.min.js" type="text/javascript"></script>
<script src="js/jquery.dataTables.min.js" type="text/javascript"></script>

See jQuery DataTables: Common JavaScript console errors for more information on this and other common console errors.

From book :

Choose a Random Row Using an Offset

Still another technique that avoids problems found in the preceding alternatives is to count the rows in the data set and return a random number between 0 and the count. Then use this number as an offset when querying the data set

$rand = "SELECT ROUND(RAND() * (SELECT COUNT(*) FROM Bugs))";
$offset = $pdo->query($rand)->fetch(PDO::FETCH_ASSOC);
$sql = "SELECT * FROM Bugs LIMIT 1 OFFSET :offset";
$stmt = $pdo->prepare($sql);
$stmt->execute( $offset );
$rand_bug = $stmt->fetch();

Use this solution when you can’t assume contiguous key values and you need to make sure each row has an even chance of being selected.

OneTouch deployment will do all the detection and installation of pre-requisites. It's probably best to go with a pre-made solution than trying to roll your own. Trying to roll your own may lead to problems because whatever thing you key on may change with a hotfix or service pack. Likely Microsoft has some heuristic for determining what version is running.

Below solution worked for me: Navigate to Project->Clean.. Clean all the projects referenced by Tomcat server Refresh the project you're trying to run on Tomcat

Try to run the server afterwards

Try this - https://github.com/laracasts/PHP-Vars-To-Js-Transformer Is simple way to append PHP variables to Javascript.

I found a customer matcher here: https://raw.github.com/gist/917903/92d7101f643e07896659f84609c117c4c279dfad/have_content_type.rb

Put it in spec/support/matchers/have_content_type.rb and make sure to load stuff from support with something like this in you spec/spec_helper.rb

Dir[Rails.root.join('spec/support/**/*.rb')].each {|f| require f}

Here is the code itself, just in case it disappeared from the given link.

RSpec::Matchers.define :have_content_type do |content_type|
  CONTENT_HEADER_MATCHER = /^(.*?)(?:; charset=(.*))?$/

  chain :with_charset do |charset|
    @charset = charset
  end

  match do |response|
    _, content, charset = *content_type_header.match(CONTENT_HEADER_MATCHER).to_a

    if @charset
      @charset == charset && content == content_type
    else
      content == content_type
    end
  end

  failure_message_for_should do |response|
    if @charset
      "Content type #{content_type_header.inspect} should match #{content_type.inspect} with charset #{@charset}"
    else
      "Content type #{content_type_header.inspect} should match #{content_type.inspect}"
    end
  end

  failure_message_for_should_not do |model|
    if @charset
      "Content type #{content_type_header.inspect} should not match #{content_type.inspect} with charset #{@charset}"
    else
      "Content type #{content_type_header.inspect} should not match #{content_type.inspect}"
    end
  end

  def content_type_header
    response.headers['Content-Type']
  end
end

Use the filter_var() function to validate whether a string is URL or not:

var_dump(filter_var('example.com', FILTER_VALIDATE_URL));

It is bad practice to use regular expressions when not necessary.

EDIT: Be careful, this solution is not unicode-safe and not XSS-safe. If you need a complex validation, maybe it's better to look somewhere else.

@vnr you can retrieve all the sort keys associated with a partition key by just using the query using partion key. No need of scan. The point here is partition key is compulsory in a query . Sort key are used only to get range of data

I know the question asks for a javascript way of simulating a keypress. But for those who are looking for a jQuery way of doing things:

var e = jQuery.Event("keypress");
e.which = 13 //or e.keyCode = 13 that simulates an <ENTER>
$("#element_id").trigger(e); 

    //Client

    import java.io.*;
    import java.net.*;

    public class Client {
        public static void main(String[] args) {

        String hostname = "localhost";
        int port = 6789;

        // declaration section:
        // clientSocket: our client socket
        // os: output stream
        // is: input stream

            Socket clientSocket = null;  
            DataOutputStream os = null;
            BufferedReader is = null;

        // Initialization section:
        // Try to open a socket on the given port
        // Try to open input and output streams

            try {
                clientSocket = new Socket(hostname, port);
                os = new DataOutputStream(clientSocket.getOutputStream());
                is = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
            } catch (UnknownHostException e) {
                System.err.println("Don't know about host: " + hostname);
            } catch (IOException e) {
                System.err.println("Couldn't get I/O for the connection to: " + hostname);
            }

        // If everything has been initialized then we want to write some data
        // to the socket we have opened a connection to on the given port

        if (clientSocket == null || os == null || is == null) {
            System.err.println( "Something is wrong. One variable is null." );
            return;
        }

        try {
            while ( true ) {
            System.out.print( "Enter an integer (0 to stop connection, -1 to stop server): " );
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            String keyboardInput = br.readLine();
            os.writeBytes( keyboardInput + "\n" );

            int n = Integer.parseInt( keyboardInput );
            if ( n == 0 || n == -1 ) {
                break;
            }

            String responseLine = is.readLine();
            System.out.println("Server returns its square as: " + responseLine);
            }

            // clean up:
            // close the output stream
            // close the input stream
            // close the socket

            os.close();
            is.close();
            clientSocket.close();   
        } catch (UnknownHostException e) {
            System.err.println("Trying to connect to unknown host: " + e);
        } catch (IOException e) {
            System.err.println("IOException:  " + e);
        }
        }           
    }





//Server




import java.io.*;
import java.net.*;

public class Server1 {
    public static void main(String args[]) {
    int port = 6789;
    Server1 server = new Server1( port );
    server.startServer();
    }

    // declare a server socket and a client socket for the server

    ServerSocket echoServer = null;
    Socket clientSocket = null;
    int port;

    public Server1( int port ) {
    this.port = port;
    }

    public void stopServer() {
    System.out.println( "Server cleaning up." );
    System.exit(0);
    }

    public void startServer() {
    // Try to open a server socket on the given port
    // Note that we can't choose a port less than 1024 if we are not
    // privileged users (root)

        try {
        echoServer = new ServerSocket(port);
        }
        catch (IOException e) {
        System.out.println(e);
        }   

    System.out.println( "Waiting for connections. Only one connection is allowed." );

    // Create a socket object from the ServerSocket to listen and accept connections.
    // Use Server1Connection to process the connection.

    while ( true ) {
        try {
        clientSocket = echoServer.accept();
        Server1Connection oneconnection = new Server1Connection(clientSocket, this);
        oneconnection.run();
        }   
        catch (IOException e) {
        System.out.println(e);
        }
    }
    }
}

class Server1Connection {
    BufferedReader is;
    PrintStream os;
    Socket clientSocket;
    Server1 server;

    public Server1Connection(Socket clientSocket, Server1 server) {
    this.clientSocket = clientSocket;
    this.server = server;
    System.out.println( "Connection established with: " + clientSocket );
    try {
        is = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
        os = new PrintStream(clientSocket.getOutputStream());
    } catch (IOException e) {
        System.out.println(e);
    }
    }

    public void run() {
        String line;
    try {
        boolean serverStop = false;

            while (true) {
                line = is.readLine();
        System.out.println( "Received " + line );
                int n = Integer.parseInt(line);
        if ( n == -1 ) {
            serverStop = true;
            break;
        }
        if ( n == 0 ) break;
                os.println("" + n*n ); 
            }

        System.out.println( "Connection closed." );
            is.close();
            os.close();
            clientSocket.close();

        if ( serverStop ) server.stopServer();
    } catch (IOException e) {
        System.out.println(e);
    }
    }
}

I just ran over this one and I found by accident that CLOBs can be used in a like query:

   UPDATE IMS_TEST 
   SET TEST_Category  = 'just testing'  
 WHERE TEST_SCRIPT    LIKE '%something%'
   AND ID             = '10000239' 

This worked also for CLOBs greater than 4K

The Performance won't be great but that was no problem in my case.

Since you seem to be on windows you can do this so python <filename.py>. Check that python's bin folder is in your PATH, or you can do c:\python23\bin\python <filename.py>. Python is an interpretive language and so you need the interpretor to run your file, much like you need java runtime to run a jar file.

Just call this function and provide minimum and maximum range of number and you will get a random number.

eg.like randomNumber(MIN: 0, MAX: 10) and You will get number between 0 to 9.

func randomNumber(MIN: Int, MAX: Int)-> Int{
    return Int(arc4random_uniform(UInt32(MAX-MIN)) + UInt32(MIN));
}

Note:- You will always get output an Integer number.

Neither <iostream> nor <iostream.h> are standard C header files. Your code is meant to be C++, where <iostream> is a valid header. Use g++ (and a .cpp file extension) for C++ code.

Alternatively, this program uses mostly constructs that are available in C anyway. It's easy enough to convert the entire program to compile using a C compiler. Simply remove #include <iostream> and using namespace std;, and replace cout << endl; with putchar('\n');... I advise compiling using C99 (eg. gcc -std=c99)

For use key/value pair in json use an object and don't use array

Find name/value in array is hard but in object is easy

Ex:

var exObj = {_x000D_
  "mainData": {_x000D_
    "slide0001.html": "Looking Ahead",_x000D_
    "slide0008.html": "Forecast",_x000D_
    "slide0021.html": "Summary",_x000D_
    // another THOUSANDS KEY VALUE PAIRS_x000D_
    // ..._x000D_
  },_x000D_
  "otherdata" : { "one": "1", "two": "2", "three": "3" }_x000D_
};_x000D_
var mainData = exObj.mainData;_x000D_
// for use:_x000D_
Object.keys(mainData).forEach(function(n,i){_x000D_
  var v = mainData[n];_x000D_
  console.log('name' + i + ': ' + n + ', value' + i + ': ' + v);_x000D_
});_x000D_
_x000D_
// and string length is minimum_x000D_
console.log(JSON.stringify(exObj));_x000D_
console.log(JSON.stringify(exObj).length);

HttpContext localContext = new BasicHttpContext();
localContext.setAttribute(HttpClientContext.COOKIE_STORE, cookieStore);
response = client.execute(httppost, localContext);

doesn't work in 4.5 version without

cookie.setDomain(".domain.com");
cookie.setAttribute(ClientCookie.DOMAIN_ATTR, "true");

The code you are talking about sounds like ServiceLoader, which was introduced in Java 6 to support a feature that has been defined since Java 1.3 or earlier. For performance reasons, this is the recommended approach to find interface implementations at runtime; if you need support for this in an older version of Java, I hope that you'll find my implementation helpful.

There are a couple of implementations of this in earlier versions of Java, but in the Sun packages, not in the core API (I think there are some classes internal to ImageIO that do this). As the code is simple, I'd recommend providing your own implementation rather than relying on non-standard Sun code which is subject to change.

Many modern browsers do not support autocomplete="off" for login fields anymore. autocomplete="new-password" is wokring instead, more information MDN docs

The -L merely gives the path where to find the .a or .so file. What you're looking for is to add -lmine to the LIBS variable.

Make that -static -lmine to force it to pick the static library (in case both static and dynamic library exist).

Addition: Suppose the path to the file has been conveyed to the linker (or compiler driver) via -L you can also specifically tell it to link libfoo.a by giving -l:libfoo.a. Note that in this case the name includes the conventional lib-prefix. You can also give a full path this way. Sometimes this is the better method to "guide" the linker to the right location.

Use the -p flag and add /udp suffix to the port number.

-p 53160:53160/udp

Full command

sudo docker run -p 53160:53160 \
    -p 53160:53160/udp -p 58846:58846 \ 
    -p 8112:8112 -t -i aostanin/deluge /start.sh

If you're running boot2docker on Mac, be sure to forward the same ports on boot2docker to your local machine.

You can also document that your container needs to receive UDP using EXPOSE in The Dockerfile (EXPOSE does not publish the port):

EXPOSE 8285/udp

Here is a link with more Docker Networking info covered in the container docs: https://docs.docker.com/config/containers/container-networking/ (Courtesy of Old Pro in the comments)

Look at the following example code:

public class MyWorker
{
    public SharedData state;
    public void DoWork(SharedData someData)
    {
        this.state = someData;
        while (true) ;
    }

}

public class SharedData {
    X myX;
    public getX() { etc
    public setX(anX) { etc

}

public class Program
{
    public static void Main()
    {
        SharedData data = new SharedDate()
        MyWorker work1 = new MyWorker(data);
        MyWorker work2 = new MyWorker(data);
        Thread thread = new Thread(new ThreadStart(work1.DoWork));
        thread.Start();
        Thread thread2 = new Thread(new ThreadStart(work2.DoWork));
        thread2.Start();
    }
}

In this case, the thread class MyWorker has a variable state. We initialise it with the same object. Now you can see that the two workers access the same SharedData object. Changes made by one worker are visible to the other.

You have quite a few remaining issues. How does worker 2 know when changes have been made by worker 1 and vice-versa? How do you prevent conflicting changes? Maybe read: this tutorial.

It works well in combination with zero-based indexing and len(). For example, if you have 10 items in a list x, they are numbered 0-9. range(len(x)) gives you 0-9.

Of course, people will tell you it's more Pythonic to do for item in x or for index, item in enumerate(x) rather than for i in range(len(x)).

Slicing works that way too: foo[1:4] is items 1-3 of foo (keeping in mind that item 1 is actually the second item due to the zero-based indexing). For consistency, they should both work the same way.

I think of it as: "the first number you want, followed by the first number you don't want." If you want 1-10, the first number you don't want is 11, so it's range(1, 11).

If it becomes cumbersome in a particular application, it's easy enough to write a little helper function that adds 1 to the ending index and calls range().

Why not get what you are looking for from the get go and read a string from the file instead of an array of bytes? Something like:

BufferedReader in = new BufferedReader(new InputStreamReader( new FileInputStream( "foo.txt"), Charset.forName( "UTF-8"));

then readLine from in until it's done.

I needed this for SQL Server. Here it is:

UPDATE user_account 
SET student_education_facility_id = cnt.education_facility_id
from  (
   SELECT user_account_id,education_facility_id
   FROM user_account 
   WHERE user_type = 'ROLE_TEACHER'
) as cnt
WHERE user_account.user_type = 'ROLE_STUDENT' and cnt.user_account_id = user_account.teacher_id

I think it works with other RDBMSes (please confirm). I like the syntax because it's extensible.

The format I needed was this actually:

UPDATE table1 
SET f1 = cnt.computed_column
from  (
   SELECT id,computed_column --can be any complex subquery
   FROM table1
) as cnt
WHERE cnt.id = table1.id

** Update ** A scalars converter has been added to retrofit that allows for a String response with less ceremony than my original answer below.

Example interface --

public interface GitHubService {
    @GET("/users/{user}")
    Call<String> listRepos(@Path("user") String user);
}

Add the ScalarsConverterFactory to your retrofit builder. Note: If using ScalarsConverterFactory and another factory, add the scalars factory first.

Retrofit retrofit = new Retrofit.Builder()
    .baseUrl(BASE_URL)
    .addConverterFactory(ScalarsConverterFactory.create())
    // add other factories here, if needed.
    .build();

You will also need to include the scalars converter in your gradle file --

implementation 'com.squareup.retrofit2:converter-scalars:2.1.0'

--- Original Answer (still works, just more code) ---

I agree with @CommonsWare that it seems a bit odd that you want to intercept the request to process the JSON yourself. Most of the time the POJO has all the data you need, so no need to mess around in JSONObject land. I suspect your specific problem might be better solved using a custom gson TypeAdapter or a retrofit Converter if you need to manipulate the JSON. However, retrofit provides more the just JSON parsing via Gson. It also manages a lot of the other tedious tasks involved in REST requests. Just because you don't want to use one of the features, doesn't mean you have to throw the whole thing out. There are times you just want to get the raw stream, so here is how to do it -

First, if you are using Retrofit 2, you should start using the Call API. Instead of sending an object to convert as the type parameter, use ResponseBody from okhttp --

public interface GitHubService {
    @GET("/users/{user}")
    Call<ResponseBody> listRepos(@Path("user") String user);
}

then you can create and execute your call --

GitHubService service = retrofit.create(GitHubService.class);
Call<ResponseBody> result = service.listRepos(username);
result.enqueue(new Callback<ResponseBody>() {
    @Override
    public void onResponse(Response<ResponseBody> response) {
        try {
            System.out.println(response.body().string());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @Override
    public void onFailure(Throwable t) {
        e.printStackTrace();
    }
});

Note The code above calls string() on the response object, which reads the entire response into a String. If you are passing the body off to something that can ingest streams, you can call charStream() instead. See the ResponseBody docs.

You might be interested in the BookLibrary sample application of the WPF Application Framework (WAF). It shows how to use validation in WPF and how to control the Save button when validation errors exists.

Well it's not even close to the full spec, but there is a JavaScript and Canvas based PDF viewer out there.

I had the same problem with spring, commons-dbcp and oracle 10g. Using this URL I got the 'no suitable driver' error: jdbc:oracle:[email protected]:1521:kinangop

The above URL is missing a full colon just before the @. After correcting that, the error disappeared.

Also, change this:

    SelBranchVal = SelBranchVal + "," + InvForm.SelBranch[x].value;

to

    SelBranchVal = SelBranchVal + InvForm.SelBranch[x].value+ "," ;

The reason is that for the first time the variable SelBranchVal will be empty

you can use the views *_DEPENDENCIES, for example:

SELECT owner, NAME
  FROM dba_dependencies
 WHERE referenced_owner = :table_owner
   AND referenced_name = :table_name
   AND TYPE IN ('PACKAGE', 'PACKAGE BODY')

shared folders VS synced folders

Basically shared folders are renamed to synced folder from v1 to v2 (docs), under the bonnet it is still using vboxsf between host and guest (there is known performance issues if there are large numbers of files/directories).

Vagrantfile directory mounted as /vagrant in guest

Vagrant is mounting the current working directory (where Vagrantfile resides) as /vagrant in the guest, this is the default behaviour.

See docs

NOTE: By default, Vagrant will share your project directory (the directory with the Vagrantfile) to /vagrant.

You can disable this behaviour by adding cfg.vm.synced_folder ".", "/vagrant", disabled: true in your Vagrantfile.

Why synced folder is not working

Based on the output /tmp on host was NOT mounted during up time.

Use VAGRANT_INFO=debug vagrant up or VAGRANT_INFO=debug vagrant reload to start the VM for more output regarding why the synced folder is not mounted. Could be a permission issue (mode bits of /tmp on host should be drwxrwxrwt).

I did a test quick test using the following and it worked (I used opscode bento raring vagrant base box)

config.vm.synced_folder "/tmp", "/tmp/src"

output

$ vagrant reload
[default] Attempting graceful shutdown of VM...
[default] Setting the name of the VM...
[default] Clearing any previously set forwarded ports...
[default] Creating shared folders metadata...
[default] Clearing any previously set network interfaces...
[default] Available bridged network interfaces:
1) eth0
2) vmnet8
3) lxcbr0
4) vmnet1
What interface should the network bridge to? 1
[default] Preparing network interfaces based on configuration...
[default] Forwarding ports...
[default] -- 22 => 2222 (adapter 1)
[default] Running 'pre-boot' VM customizations...
[default] Booting VM...
[default] Waiting for VM to boot. This can take a few minutes.
[default] VM booted and ready for use!
[default] Configuring and enabling network interfaces...
[default] Mounting shared folders...
[default] -- /vagrant
[default] -- /tmp/src

Within the VM, you can see the mount info /tmp/src on /tmp/src type vboxsf (uid=900,gid=900,rw).

First install Ubuntu's python-lxml package and its dependencies:

sudo apt-get install python-lxml

Then use pip to upgrade to the latest version of lxml for Python:

pip install lxml

This command:

iconv -f utf-8 -t utf-8 -c file.txt

will clean up your UTF-8 file, skipping all the invalid characters.

-f is the source format
-t the target format
-c skips any invalid sequence

Please refer to this for the example .The main point is to use the groupProperty() , and the related aggregate functions provided by the Projections class.

For example :

SELECT column_name, max(column_name) , min (column_name) , count(column_name)
FROM table_name
WHERE column_name > xxxxx
GROUP BY column_name

Its equivalent criteria object is :

List result = session.createCriteria(SomeTable.class)       
                    .add(Restrictions.ge("someColumn", xxxxx))      
                    .setProjection(Projections.projectionList()
                            .add(Projections.groupProperty("someColumn"))
                            .add(Projections.max("someColumn"))
                            .add(Projections.min("someColumn"))
                            .add(Projections.count("someColumn"))           
                    ).list();

In fact, we can simply use the standard bootstrap text colors, instead of hacking the CSS formats.

Standard Color examples: text-primary, text-secondary, text-success, text-danger, text-warning, text-info

In the Navbar code sample bellow, the text Homepage would be in the orange color (text-warning).

<a class="navbar-brand text-warning" href="/" > Homepage </a>

In the Navbar menu item sample bellow, the text Menu Item would be in the blue color (text-primary).

<a class="dropdown-item text-primary" href="/my-link">Menu Item</a>

Something like this

var limit = 10;
var amount = 3;
var nums = new Array();

for(int i = 0; i < amount; i++)
{
    var add = true;
    var n = Math.round(Math.random()*limit + 1;
    for(int j = 0; j < limit.length; j++)
    {
        if(nums[j] == n)
        {
            add = false;
        }
    }
    if(add)
    {
        nums.push(n)
    }
    else
    {
        i--;
    }
}

You are passing into the JSONObject constructor an instance of a StringBuilder class.

This is using the JSONObject(Object) constructor, not the JSONObject(String) one.

Your code should be:

JSONObject jsonObj = new JSONObject(jsonString.toString());

There is two simples ways to do that :

1-

select("users.birthdate",
            DB::raw("FLOOR(DATEDIFF(CURRENT_DATE, STR_TO_DATE(users.birthdate, '%Y-%m-%d'))/365) AS age_way_one"),

2-

select("users.birthdate",DB::raw("(YEAR(CURDATE())-YEAR(users.birthdate)) AS age_way_two"))

The default expiry_date for google oauth2 access token is 1 hour. The expiry_date is in the Unix epoch time in milliseconds. If you want to read this in human readable format then you can simply check it here..Unix timestamp to human readable time

Here is my code for shake gesture detection:

import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;


/**
 * Listener that detects shake gesture.
 */
public class ShakeEventListener implements SensorEventListener {


  /** Minimum movement force to consider. */
  private static final int MIN_FORCE = 10;

  /**
   * Minimum times in a shake gesture that the direction of movement needs to
   * change.
   */
  private static final int MIN_DIRECTION_CHANGE = 3;

  /** Maximum pause between movements. */
  private static final int MAX_PAUSE_BETHWEEN_DIRECTION_CHANGE = 200;

  /** Maximum allowed time for shake gesture. */
  private static final int MAX_TOTAL_DURATION_OF_SHAKE = 400;

  /** Time when the gesture started. */
  private long mFirstDirectionChangeTime = 0;

  /** Time when the last movement started. */
  private long mLastDirectionChangeTime;

  /** How many movements are considered so far. */
  private int mDirectionChangeCount = 0;

  /** The last x position. */
  private float lastX = 0;

  /** The last y position. */
  private float lastY = 0;

  /** The last z position. */
  private float lastZ = 0;

  /** OnShakeListener that is called when shake is detected. */
  private OnShakeListener mShakeListener;

  /**
   * Interface for shake gesture.
   */
  public interface OnShakeListener {

    /**
     * Called when shake gesture is detected.
     */
    void onShake();
  }

  public void setOnShakeListener(OnShakeListener listener) {
    mShakeListener = listener;
  }

  @Override
  public void onSensorChanged(SensorEvent se) {
    // get sensor data
    float x = se.values[SensorManager.DATA_X];
    float y = se.values[SensorManager.DATA_Y];
    float z = se.values[SensorManager.DATA_Z];

    // calculate movement
    float totalMovement = Math.abs(x + y + z - lastX - lastY - lastZ);

    if (totalMovement > MIN_FORCE) {

      // get time
      long now = System.currentTimeMillis();

      // store first movement time
      if (mFirstDirectionChangeTime == 0) {
        mFirstDirectionChangeTime = now;
        mLastDirectionChangeTime = now;
      }

      // check if the last movement was not long ago
      long lastChangeWasAgo = now - mLastDirectionChangeTime;
      if (lastChangeWasAgo < MAX_PAUSE_BETHWEEN_DIRECTION_CHANGE) {

        // store movement data
        mLastDirectionChangeTime = now;
        mDirectionChangeCount++;

        // store last sensor data 
        lastX = x;
        lastY = y;
        lastZ = z;

        // check how many movements are so far
        if (mDirectionChangeCount >= MIN_DIRECTION_CHANGE) {

          // check total duration
          long totalDuration = now - mFirstDirectionChangeTime;
          if (totalDuration < MAX_TOTAL_DURATION_OF_SHAKE) {
            mShakeListener.onShake();
            resetShakeParameters();
          }
        }

      } else {
        resetShakeParameters();
      }
    }
  }

  /**
   * Resets the shake parameters to their default values.
   */
  private void resetShakeParameters() {
    mFirstDirectionChangeTime = 0;
    mDirectionChangeCount = 0;
    mLastDirectionChangeTime = 0;
    lastX = 0;
    lastY = 0;
    lastZ = 0;
  }

  @Override
  public void onAccuracyChanged(Sensor sensor, int accuracy) {
  }

}

Add this in your activity:

  private SensorManager mSensorManager;

  private ShakeEventListener mSensorListener;

...

in onCreate() add:

    mSensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
    mSensorListener = new ShakeEventListener();   

    mSensorListener.setOnShakeListener(new ShakeEventListener.OnShakeListener() {

      public void onShake() {
        Toast.makeText(KPBActivityImpl.this, "Shake!", Toast.LENGTH_SHORT).show();
      }
    });

and:

@Override
  protected void onResume() {
    super.onResume();
    mSensorManager.registerListener(mSensorListener,
        mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER),
        SensorManager.SENSOR_DELAY_UI);
  }

  @Override
  protected void onPause() {
    mSensorManager.unregisterListener(mSensorListener);
    super.onPause();
  }

Its not necessary to apply above solutions, I simply changed my internet, it was working fine with my home internet but after 3 to 4 hours my friend suggest me to connect with different internet then I did data package and connect my laptop with it, now it is working fine.

Source

Thread

Thread represents an actual OS-level thread, with its own stack and kernel resources. (technically, a CLR implementation could use fibers instead, but no existing CLR does this) Thread allows the highest degree of control; you can Abort() or Suspend() or Resume() a thread (though this is a very bad idea), you can observe its state, and you can set thread-level properties like the stack size, apartment state, or culture.

The problem with Thread is that OS threads are costly. Each thread you have consumes a non-trivial amount of memory for its stack, and adds additional CPU overhead as the processor context-switch between threads. Instead, it is better to have a small pool of threads execute your code as work becomes available.

There are times when there is no alternative Thread. If you need to specify the name (for debugging purposes) or the apartment state (to show a UI), you must create your own Thread (note that having multiple UI threads is generally a bad idea). Also, if you want to maintain an object that is owned by a single thread and can only be used by that thread, it is much easier to explicitly create a Thread instance for it so you can easily check whether code trying to use it is running on the correct thread.

ThreadPool

ThreadPool is a wrapper around a pool of threads maintained by the CLR. ThreadPool gives you no control at all; you can submit work to execute at some point, and you can control the size of the pool, but you can't set anything else. You can't even tell when the pool will start running the work you submit to it.

Using ThreadPool avoids the overhead of creating too many threads. However, if you submit too many long-running tasks to the threadpool, it can get full, and later work that you submit can end up waiting for the earlier long-running items to finish. In addition, the ThreadPool offers no way to find out when a work item has been completed (unlike Thread.Join()), nor a way to get the result. Therefore, ThreadPool is best used for short operations where the caller does not need the result.

Task

Finally, the Task class from the Task Parallel Library offers the best of both worlds. Like the ThreadPool, a task does not create its own OS thread. Instead, tasks are executed by a TaskScheduler; the default scheduler simply runs on the ThreadPool.

Unlike the ThreadPool, Task also allows you to find out when it finishes, and (via the generic Task) to return a result. You can call ContinueWith() on an existing Task to make it run more code once the task finishes (if it's already finished, it will run the callback immediately). If the task is generic, ContinueWith() will pass you the task's result, allowing you to run more code that uses it.

You can also synchronously wait for a task to finish by calling Wait() (or, for a generic task, by getting the Result property). Like Thread.Join(), this will block the calling thread until the task finishes. Synchronously waiting for a task is usually bad idea; it prevents the calling thread from doing any other work, and can also lead to deadlocks if the task ends up waiting (even asynchronously) for the current thread.

Since tasks still run on the ThreadPool, they should not be used for long-running operations, since they can still fill up the thread pool and block new work. Instead, Task provides a LongRunning option, which will tell the TaskScheduler to spin up a new thread rather than running on the ThreadPool.

All newer high-level concurrency APIs, including the Parallel.For*() methods, PLINQ, C# 5 await, and modern async methods in the BCL, are all built on Task.

Conclusion

The bottom line is that Task is almost always the best option; it provides a much more powerful API and avoids wasting OS threads.

The only reasons to explicitly create your own Threads in modern code are setting per-thread options, or maintaining a persistent thread that needs to maintain its own identity.

By the rational of making everything multiplication I add the entry at the end of the list

    clc; clear all;
    V = rand(1024*1024*32,1);
    N = 10;
    tic; for i=1:N, V1 = V/norm(V);         end; toc % 4.5 s
    tic; for i=1:N, V2 = V/sqrt(sum(V.*V)); end; toc % 7.5 s
    tic; for i=1:N, V3 = V/sqrt(V'*V);      end; toc % 4.9 s
    tic; for i=1:N, V4 = V/sqrt(sum(V.^2)); end; toc % 6.8 s
    tic; for i=1:N, V1 = V/norm(V);         end; toc % 4.7 s
    tic; for i=1:N, d = 1/norm(V); V1 = V*d;end; toc % 4.9 s
    tic; for i=1:N, d = norm(V)^-1; V1 = V*d;end;toc % 4.4 s

The previous functions didn't work for me, so I've made another function that use the same logic of one of the answers above: parse the formula in the cell to find the referenced range of cells to examine and than look for the coloured cells. You can find a detailed description here: Google Script count coloured with reference, but the code is below:

function countColoured(reference) {
  var sheet = SpreadsheetApp.getActiveSheet();
  var formula = SpreadsheetApp.getActiveRange().getFormula();
  var args = formula.match(/=\w+\((.*)\)/i)[1].split('!');
  try {
    if (args.length == 1) {
      var range = sheet.getRange(args[0]);
    }
    else {
      sheet = ss.getSheetByName(args[0].replace(/'/g, ''));
      range = sheet.getRange(args[1]);
    }
  }
  catch(e) {
    throw new Error(args.join('!') + ' is not a valid range');
  }
  var c = 0;
  var numRows = range.getNumRows();
  var numCols = range.getNumColumns();
  for (var i = 1; i <= numRows; i++) {
    for (var j = 1; j <= numCols; j++) {
      c = c + ( range.getCell(i,j).getBackground() == "#ffffff" ? 0 : 1 );
    }
  }
  return c > 0 ? c : "" ;
}

Try  

It is equivalent to four  s.

If you need to handle the action more specifically with the back button you can use the following method:

view.setFocusableInTouchMode(true);
view.requestFocus();
view.setOnKeyListener(new View.OnKeyListener() {
    @Override
    public boolean onKey(View v, int keyCode, KeyEvent event) {
        if( keyCode == KeyEvent.KEYCODE_BACK )
        {
            onCloseFragment();
            return true;
        } else {
            return false;
        }
    }
});

if all solutions up did not work for you, make sure the service is running and not set to Disabled!
Go to Services from Control panel and open Services,
Search for Apache2.4 and mysql then switch it to enabled, in the column of status it should be switched to Running

We were getting this issue even after updating to the latest Adobe Reader version.

Two different methods solved this issue for us:

• Using the free version of Foxit Reader application in place of Adobe Reader
• But, since most of our clients use Adobe Reader, so instead of requiring users to use Foxit Reader, we started using window.open(url) to open the pdf instead of window.location.href = url. Adobe was losing the file handle on for some reason in different iframes when the pdf was opened using the window.location.href method.

function change() {
 myButton1.value=="Open Curtain" ? myButton1.value="Close Curtain" : myButton1.value="Open Curtain";
}

100, it will hold the same references. Therefore if you make a change to a specific object in the list, it will affect the same object in anotherList.

Adding or removing objects in any of the list will not affect the other.

list and anotherList are two different instances, they only hold the same references of the objects "inside" them.

yes it is. And a constructor of abstract class is called when an instance of a inherited class is created. For example, the following is a valid Java program.

// An abstract class with constructor
abstract class Base {
Base() { System.out.println("Base Constructor Called"); }
abstract void fun();
    }
class Derived extends Base {
Derived() { System.out.println("Derived Constructor Called"); }
void fun() { System.out.println("Derived fun() called"); }
    }

class Main {
public static void main(String args[]) { 
   Derived d = new Derived();
    }

}

This is the output of the above code,

Base Constructor Called Derived Constructor Called

references: enter link description here

This is a common question. In base, the option you're looking for is aggregate. Assuming your data.frame is called "mydf", you can use the following.

> aggregate(B ~ A, mydf, sum)
  A  B
1 1  5
2 2  3
3 3 11

I would also recommend looking into the "data.table" package.

> library(data.table)
> DT <- data.table(mydf)
> DT[, sum(B), by = A]
   A V1
1: 1  5
2: 2  3
3: 3 11

1. First make sure sa is enabled
2. Change the authontication mode to mixed mode (Window and SQL authentication)
3. Stop your SQL Server
4. Restart your SQL Server

best way to use:

typeof(T).Name

One way to fix up your python2 code is:

import sys

if sys.version_info >= (3, 0):
    def xrange(*args, **kwargs):
        return iter(range(*args, **kwargs))

You can use the static from() method from the LayoutInflater class:

 LayoutInflater li = LayoutInflater.from(context);

Use the .css() jQuery manipulators, or better yet just call .show()/.hide() on the image once you've obtained a handle to it (e.g. $('#img' + id)).

BTW, you should not write javascript handlers with the "javascript:" prefix.

I think it is telling you exactly what is wrong. You cannot compare an integer with a varchar. PostgreSQL is strict and does not do any magic typecasting for you. I'm guessing SQLServer does typecasting automagically (which is a bad thing).

If you want to compare these two different beasts, you will have to cast one to the other using the casting syntax ::.

Something along these lines:

create view view1
as 
select table1.col1,table2.col1,table3.col3
from table1 
inner join
table2 
inner join 
table3
on 
table1.col4::varchar = table2.col5
/* Here col4 of table1 is of "integer" type and col5 of table2 is of type "varchar" */
/* ERROR: operator does not exist: integer = character varying */
....;

Notice the varchar typecasting on the table1.col4.

Also note that typecasting might possibly render your index on that column unusable and has a performance penalty, which is pretty bad. An even better solution would be to see if you can permanently change one of the two column types to match the other one. Literately change your database design.

Or you could create a index on the casted values by using a custom, immutable function which casts the values on the column. But this too may prove suboptimal (but better than live casting).

Very simple, you close it :)

var myWebSocket = new WebSocket("ws://example.org"); 
myWebSocket.send("Hello Web Sockets!"); 
myWebSocket.close();

Did you check also the following site And check the introduction article of Opera

You can also use ctypes to tap into the Windows API and avoid the massive pywin32 package. This is what I use (excuse the poor style, but the idea is there):

import ctypes

# Get required functions, strcpy..
strcpy = ctypes.cdll.msvcrt.strcpy
ocb = ctypes.windll.user32.OpenClipboard    # Basic clipboard functions
ecb = ctypes.windll.user32.EmptyClipboard
gcd = ctypes.windll.user32.GetClipboardData
scd = ctypes.windll.user32.SetClipboardData
ccb = ctypes.windll.user32.CloseClipboard
ga = ctypes.windll.kernel32.GlobalAlloc    # Global memory allocation
gl = ctypes.windll.kernel32.GlobalLock     # Global memory Locking
gul = ctypes.windll.kernel32.GlobalUnlock
GMEM_DDESHARE = 0x2000

def Get():
  ocb(None) # Open Clip, Default task

  pcontents = gcd(1) # 1 means CF_TEXT.. too lazy to get the token thingy...

  data = ctypes.c_char_p(pcontents).value

  #gul(pcontents) ?
  ccb()

  return data

def Paste(data):
  ocb(None) # Open Clip, Default task

  ecb()

  hCd = ga(GMEM_DDESHARE, len(bytes(data,"ascii")) + 1)

  pchData = gl(hCd)

  strcpy(ctypes.c_char_p(pchData), bytes(data, "ascii"))

  gul(hCd)

  scd(1, hCd)

  ccb()

And here is a simple Send-MailMessage example with username/password for anyone looking for just that

$secpasswd = ConvertTo-SecureString "PlainTextPassword" -AsPlainText -Force
$cred = New-Object System.Management.Automation.PSCredential ("username", $secpasswd)
Send-MailMessage -SmtpServer mysmptp -Credential $cred -UseSsl -From '[email protected]' -To '[email protected]' -Subject 'TEST'

You should override equals

 public boolean equals (Object obj) {
     if (this==obj) return true;
     if (this == null) return false;
     if (this.getClass() != obj.getClass()) return false;
     // Class name is Employ & have lastname
     Employe emp = (Employee) obj ;
     return this.lastname.equals(emp.getlastname());
 }

$getyear = explode("-", $value['users_dob']);
$dob = date('Y') - $getyear[0];

$value['users_dob'] is the database value with format yyyy-mm-dd

When i had the same problem, i stoped my mongo server and started it again with command

mongod --repair

Before running repair operation you should check do you have enough free space on your HDD (min - is the size of your database)

Simply we can use:-

1. @ :- for String values for one way Data binding. in one way data binding you can only pass scope value to directive

2. = :- for object value for two way data binding. in two way data binding you can change the scope value in directive as well as in html also.

3. & :- for methods and functions.

EDIT

In our Component definition for Angular version 1.5 And above
there are four different type of bindings:

1. = Two-way data binding :- if we change the value,it automatically update

2. < one way binding :- when we just want to read a parameter from a parent scope and not update it.

3. @ this is for String Parameters

4. & this is for Callbacks in case your component needs to output something to its parent scope

You can use TreeMap which will store values in sorted form.

Map <String, String> map = new TreeMap <String, String>();

inspired by Joaquin Alberto, this worked for me:

public class SpinAdapter extends ArrayAdapter<User>{


    public SpinAdapter(Context context, int textViewResourceId,
            User[] values) {
        super(context, textViewResourceId, values);
    }



    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        TextView label = (TextView) super.getView(position, convertView, parent);
        label.setTextColor(Color.BLACK);
        label.setText(this.getItem(position).getName());
        return label;
    }

    @Override
    public View getDropDownView(int position, View convertView,ViewGroup parent) {
        TextView label = (TextView) super.getView(position, convertView, parent);
        label.setTextColor(Color.BLACK);
        label.setText(this.getItem(position).getName());
        return label;
    }
}

In my experience, the most friendly way of dealing with this is to have a function that converts a string into a table of values.

There are many splitter functions available on the web, you'll easily find one for whatever if your flavour of SQL.

You can then do...

SELECT * FROM table WHERE id IN (SELECT id FROM split(@list_of_ids))

Or

SELECT * FROM table INNER JOIN (SELECT id FROM split(@list_of_ids)) AS list ON list.id = table.id

(Or similar)

Same thing, Just start the table name with # or ##:

CREATE TABLE #TemporaryTable          -- Local temporary table - starts with single #
(
    Col1 int,
    Col2 varchar(10)
    ....
);

CREATE TABLE ##GlobalTemporaryTable   -- Global temporary table - note it starts with ##.
(
    Col1 int,
    Col2 varchar(10)
    ....
);

Temporary table names start with # or ## - The first is a local temporary table and the last is a global temporary table.

Here is one of many articles describing the differences between them.

Maybe you could do it this way, this program is a demonstration of how to trap a segmentation fault and shells out to a debugger (this is the original code used under AIX) and prints the stack trace up to the point of a segmentation fault. You will need to change the sprintf variable to use gdb in the case of Linux.

#include <stdio.h>
#include <signal.h>
#include <stdlib.h>
#include <stdarg.h>

static void signal_handler(int);
static void dumpstack(void);
static void cleanup(void);
void init_signals(void);
void panic(const char *, ...);

struct sigaction sigact;
char *progname;

int main(int argc, char **argv) {
    char *s;
    progname = *(argv);
    atexit(cleanup);
    init_signals();
    printf("About to seg fault by assigning zero to *s\n");
    *s = 0;
    sigemptyset(&sigact.sa_mask);
    return 0;
}

void init_signals(void) {
    sigact.sa_handler = signal_handler;
    sigemptyset(&sigact.sa_mask);
    sigact.sa_flags = 0;
    sigaction(SIGINT, &sigact, (struct sigaction *)NULL);

    sigaddset(&sigact.sa_mask, SIGSEGV);
    sigaction(SIGSEGV, &sigact, (struct sigaction *)NULL);

    sigaddset(&sigact.sa_mask, SIGBUS);
    sigaction(SIGBUS, &sigact, (struct sigaction *)NULL);

    sigaddset(&sigact.sa_mask, SIGQUIT);
    sigaction(SIGQUIT, &sigact, (struct sigaction *)NULL);

    sigaddset(&sigact.sa_mask, SIGHUP);
    sigaction(SIGHUP, &sigact, (struct sigaction *)NULL);

    sigaddset(&sigact.sa_mask, SIGKILL);
    sigaction(SIGKILL, &sigact, (struct sigaction *)NULL);
}

static void signal_handler(int sig) {
    if (sig == SIGHUP) panic("FATAL: Program hanged up\n");
    if (sig == SIGSEGV || sig == SIGBUS){
        dumpstack();
        panic("FATAL: %s Fault. Logged StackTrace\n", (sig == SIGSEGV) ? "Segmentation" : ((sig == SIGBUS) ? "Bus" : "Unknown"));
    }
    if (sig == SIGQUIT) panic("QUIT signal ended program\n");
    if (sig == SIGKILL) panic("KILL signal ended program\n");
    if (sig == SIGINT) ;
}

void panic(const char *fmt, ...) {
    char buf[50];
    va_list argptr;
    va_start(argptr, fmt);
    vsprintf(buf, fmt, argptr);
    va_end(argptr);
    fprintf(stderr, buf);
    exit(-1);
}

static void dumpstack(void) {
    /* Got this routine from http://www.whitefang.com/unix/faq_toc.html
    ** Section 6.5. Modified to redirect to file to prevent clutter
    */
    /* This needs to be changed... */
    char dbx[160];

    sprintf(dbx, "echo 'where\ndetach' | dbx -a %d > %s.dump", getpid(), progname);
    /* Change the dbx to gdb */

    system(dbx);
    return;
}

void cleanup(void) {
    sigemptyset(&sigact.sa_mask);
    /* Do any cleaning up chores here */
}

You may have to additionally add a parameter to get gdb to dump the core as shown here in this blog here.

To view the months of the current year, and only the months, use this format - it only takes the months of that year. It can also be restricted so that a certain number of months is displayed.

<input class="form-control" id="txtDateMMyyyy"  autocomplete="off" required readonly/>

<script>
('#txtDateMMyyyy').datetimepicker({
    format: "mm/yyyy",
    startView: "year",
    minView: "year"
}).datetimepicker("setDate", new Date());
</script>

In my case it was something else: the object I was saving should first have an id(e.g. save() should be called) before I could set any kind of relationship with it.

The documentation for focusout says (emphasis mine):

The focusout event is sent to an element when it, or any element inside of it, loses focus. This is distinct from the blur event in that it supports detecting the loss of focus on descendant elements (in other words, it supports event bubbling).

The same distinction exists between the focusin and focus events.

This package allows you to generate a random password while fluently indicating which characters it should contain (if needed):

https://github.com/prjseal/PasswordGenerator/

Example:

var pwd = new Password().IncludeLowercase().IncludeUppercase().IncludeSpecial();
var password = pwd.Next();

There are couple of ways of including your python script with name abc.py

1. e.g. if your file is called abc.py (import abc) Limitation is that your file should be present in the same location where your calling python script is.

import abc

2. e.g. if your python file is inside the Windows folder. Windows folder is present at the same location where your calling python script is.

from folder import abc

3. Incase abc.py script is available insider internal_folder which is present inside folder

from folder.internal_folder import abc

4. As answered by James above, in case your file is at some fixed location

import os
import sys
scriptpath = "../Test/MyModule.py"
sys.path.append(os.path.abspath(scriptpath))
import MyModule

In case your python script gets updated and you don't want to upload - use these statements for auto refresh. Bonus :)

%load_ext autoreload 
%autoreload 2

My Solution is given below here searchDetail is an object..

<p-calendar  [ngModel]="searchDetail.queryDate | date:'MM/dd/yyyy'"  (ngModelChange)="searchDetail.queryDate=$event" [showIcon]="true" required name="queryDate" placeholder="Enter the Query Date"></p-calendar>

<input id="float-input" type="text" size="30" pInputText [ngModel]="searchDetail.systems | json"  (ngModelChange)="searchDetail.systems=$event" required='true' name="systems"
            placeholder="Enter the Systems">

After poking around it looks like Kelsey is correct.

Just use a comma or something and split it when you want to consume it.

in laravel 4 you just have to paste {{ URL::asset('/') }} this way:

  <link rel="stylesheet" href="{{ URL::asset('/') }}css/app.css" />.

It is the same for:

  <script language="JavaScript" src="{{ URL::asset('/') }}js/jquery.js"></script>
  <img src="{{ URL::asset('/') }}img/image.gif">

Sometime user open the SplashActivity and quit immediately but the app still go to MainActivity after SPLASH_SCREEN_DISPLAY_LENGTH.

For prevent it: In SplashActivity you should check the SplashActivity is finishing or not before move to MainActivity

public class SplashActivity extends Activity {

    private final int SPLASH_SCREEN_DISPLAY_LENGTH = 2000;

    @Override
    public void onCreate(Bundle icicle) {
        ...
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {

                if (!isFinishing()) {//isFinishing(): If the activity is finishing, returns true; else returns false.
                    startActivity(new Intent(SplashActivity.this, MainActivity.class));
                    finish();
                }

            }, SPLASH_SCREEN_DISPLAY_LENGTH);
        }                             
   }                                
}

Hope this help

C# 8 allows you to solve this problem elegantly and compactly using an switch expression:

public string GetTypeName(object obj)
{
    return obj switch
    {
        int i => "Int32",
        string s => "String",
        { } => "Unknown",
        _ => throw new ArgumentNullException(nameof(obj))
    };
}

As a result, you get:

Console.WriteLine(GetTypeName(obj: 1));           // Int32
Console.WriteLine(GetTypeName(obj: "string"));    // String
Console.WriteLine(GetTypeName(obj: 1.2));         // Unknown
Console.WriteLine(GetTypeName(obj: null));        // System.ArgumentNullException

You can read more about the new feature here.

The usual way to handle this scenario is by setting the alt tag to something meaningful.

If you want a default image instead, then I suggest using a server-side technology to serve up your images, called using a similar format to:

<img src="ImageHandler.aspx?Img=Blue.jpg" alt="I am a picture" />

In the ImageHandler.aspx code, catch any file-not-found errors and serve up your default.jpg instead.

For CentOS, RHEL, Amazon Linux: sudo yum install jq

you had this

destination = Node(key: String?, neighbors: [Edge!], visited: Bool, lat: Double, long: Double)

which was place holder text above you need to insert some values

class Edge{

}

public class Node{

  var key: String?
  var neighbors: [Edge]
  var visited: Bool = false
  var lat: Double
  var long: Double

  init(key: String?, neighbors: [Edge], visited: Bool, lat: Double, long: Double) {
    self.neighbors = [Edge]()
    self.key = key
    self.visited = visited
    self.lat = lat
    self.long = long
  }

}

class Path {

  var total: Int!
  var destination: Node
  var previous: Path!

  init(){
    destination = Node(key: "", neighbors: [], visited: true, lat: 12.2, long: 22.2)
  }
}

When you have a function that can receive pointers to more than one type, calling it with NULL is ambiguous. The way this is worked around now is very hacky by accepting an int and assuming it's NULL.

template <class T>
class ptr {
    T* p_;
    public:
        ptr(T* p) : p_(p) {}

        template <class U>
        ptr(U* u) : p_(dynamic_cast<T*>(u)) { }

        // Without this ptr<T> p(NULL) would be ambiguous
        ptr(int null) : p_(NULL)  { assert(null == NULL); }
};

In C++11 you would be able to overload on nullptr_t so that ptr<T> p(42); would be a compile-time error rather than a run-time assert.

ptr(std::nullptr_t) : p_(nullptr)  {  }

You should place two update statements inside a transaction

Use List<Integer> list = new ArrayList<Integer>();

Try the keyboard shortcut Ctrl-Shift-Space. This corresponds to Edit.ParameterInfo, in case you've changed the default.

Example:

good way:

if(typeof neverDeclared == "undefined") //no errors

But the best looking way is to check via :

if(typeof neverDeclared === typeof undefined) //also no errors and no strings

There are a couple of variables to set the max number of connections. Most likely, you're running out of file numbers first. Check ulimit -n. After that, there are settings in /proc, but those default to the tens of thousands.

More importantly, it sounds like you're doing something wrong. A single TCP connection ought to be able to use all of the bandwidth between two parties; if it isn't:

• Check if your TCP window setting is large enough. Linux defaults are good for everything except really fast inet link (hundreds of mbps) or fast satellite links. What is your bandwidth*delay product?
• Check for packet loss using ping with large packets (ping -s 1472 ...)
• Check for rate limiting. On Linux, this is configured with tc
• Confirm that the bandwidth you think exists actually exists using e.g., iperf
• Confirm that your protocol is sane. Remember latency.
• If this is a gigabit+ LAN, can you use jumbo packets? Are you?

Possibly I have misunderstood. Maybe you're doing something like Bittorrent, where you need lots of connections. If so, you need to figure out how many connections you're actually using (try netstat or lsof). If that number is substantial, you might:

• Have a lot of bandwidth, e.g., 100mbps+. In this case, you may actually need to up the ulimit -n. Still, ~1000 connections (default on my system) is quite a few.
• Have network problems which are slowing down your connections (e.g., packet loss)
• Have something else slowing you down, e.g., IO bandwidth, especially if you're seeking. Have you checked iostat -x?

Also, if you are using a consumer-grade NAT router (Linksys, Netgear, DLink, etc.), beware that you may exceed its abilities with thousands of connections.

I hope this provides some help. You're really asking a networking question.

Lazy loading - is good when handling with pagination like on page load list of users appear which contains 10 users and as the user scrolls down the page an api call brings next 10 users.Its good when you don't want to load enitire data at once as it would take more time and would give bad user experience.

Eager loading - is good as other people suggested when there are not much relations and fetch entire data at once in single call to database

You use the String.format() method.

mappedby="object of entity of same class created in another class”

Note:-Mapped by can be used only in one class because one table must contain foreign key constraint. if mapped by can be applied on both side then it remove foreign key from both table and without foreign key there is no relation b/w two tables.

Note:- it can be use for following annotations:- 1.@OneTone 2.@OneToMany 3.@ManyToMany

Note---It cannot be use for following annotation :- 1.@ManyToOne

In one to one :- Perform at any side of mapping but perform at only one side . It will remove the extra column of foreign key constraint on the table on which class it is applied.

For eg . If we apply mapped by in Employee class on employee object then foreign key from Employee table will be removed.

My app manage a lot of images and it died with a OutOfMemoryError. This helped me. In the Manifest.xml Add

<application
....
   android:largeHeap="true"> 

Here's a complete (yet simple) example of redirecting after X seconds, while updating a counter div:

<html>_x000D_
<body>_x000D_
    <div id="counter">5</div>_x000D_
    <script>_x000D_
        setInterval(function() {_x000D_
            var div = document.querySelector("#counter");_x000D_
            var count = div.textContent * 1 - 1;_x000D_
            div.textContent = count;_x000D_
            if (count <= 0) {_x000D_
                window.location.replace("https://example.com");_x000D_
            }_x000D_
        }, 1000);_x000D_
    </script>_x000D_
</body>_x000D_
</html>

The initial content of the counter div is the number of seconds to wait.

You can use parsing with double instead of float to get more precision value.

You can make a custom border using a span. Make a span with a class (Specifying the direction in which the border is going) and an id:

<html>
    <body>
        <div class="mdiv">
            <span class="VerticalBorder" id="Span1"></span>
            <header class="mheader">
                <span class="HorizontalBorder" id="Span2"></span>
            </header>
        </div>
    </body>
</html>

Then, go to you CSS and set the class to position:absolute, height:100% (For Vertical Borders), width:100% (For Horizontal Borders), margin:0% and background-color:#000000;. Add everthing else that is necessary:

body{
    margin:0%;
}

div.mdiv{
    position:absolute;
    width:100%;
    height:100%;
    top:0%;
    left:0%;
    margin:0%;
}

header.mheader{
    position:absolute;
    width:100%;
    height:20%; /* You can set this to whatever. I will use 20 for easier calculations. You don't need a header. I'm using it to show you the difference. */
    top:0%;
    left:0%;
    margin:0%;
}

span.HorizontalBorder{
    position:absolute;
    width:100%;
    margin:0%;
    background-color:#000000;
}

span.VerticalBorder{
    position:absolute;
    height:100%;
    margin:0%;
    background-color:#000000;
}

Then set the id that corresponds to class="VerticalBorder" to top:0%;, left:0%;, width:1%; (Since the width of the mdiv is equal to the width of the mheader at 100%, the width will be 100% of what you set it. If you set the width to 1% the border will be 1% of the window's width). Set the id that corresponds to the class="HorizontalBorder" to top:99% (Since it's in a header container the top refers to the position it is in according to the header. This + the height should add up to 100% if you want it to reach the bottom), left:0%; and height:1%(Since the height of the mdiv is 5 times greater than the mheader height [100% = 100, 20% = 20, 100/20 = 5], the height will be 20% of what you set it. If you set the height to 1% the border will be .2% of the window's height). Here is how it will look:

span#Span1{
    top:0%;
    left:0%;
    width:.4%;
}
span#Span2{
    top:99%;
    left:0%;
    width:1%;
}

DISCLAIMER: If you resize the window to a small enough size, the borders will disappear. A solution would be to cap of the size of the border if the window is resized to a certain point. Here is what I did:

window.addEventListener("load", Loaded);

function Loaded() {
  window.addEventListener("resize", Resized);

  function Resized() {
    var WindowWidth = window.innerWidth;
    var WindowHeight = window.innerHeight;
    var Span1 = document.getElementById("Span1");
    var Span2 = document.getElementById("Span2");
    if (WindowWidth <= 800) {
      Span1.style.width = .4;
    }
    if (WindowHeight <= 600) {
      Span2.style.height = 1;
    }
  }
}

If you did everything right, it should look like how it is in this link: https://jsfiddle.net/umhgkvq8/12/ For some odd reason, the the border will disappear in jsfiddle but not if you launch it to a browser.

If you just need a number that's bigger than all others, you can use

float('inf')

in similar fashion, a number smaller than all others:

float('-inf')

This works in both python 2 and 3.

I've historically rolled my own access at a low level (XML generation and parsing) to deal with the occasional need to do SOAP style requests from Objective-C. That said, there's a library available called SOAPClient (soapclient) that is open source (BSD licensed) and available on Google Code (mac-soapclient) that might be of interest.

I won't attest to it's abilities or effectiveness, as I've never used it or had to work with it's API's, but it is available and might provide a quick solution for you depending on your needs.

Apple had, at one time, a very broken utility called WS-MakeStubs. I don't think it's available on the iPhone, but you might also be interested in an open-source library intended to replace that - code generate out Objective-C for interacting with a SOAP client. Again, I haven't used it - but I've marked it down in my notes: wsdl2objc

In my opinion if you got the resources to use, then go with eclipse. NetBeans which is awesome like eclipse is another best option, these are the only 2 I've ever used (loved, needed, wanted)

Eclipse is hands down the most popular, and for good reason!

Hope this helps.

Ctrl+K, Ctrl+C Comment a block

Ctrl+K, Ctrl+U Uncomment the block

Brian beat me too it, but since I already have the transcript:

easy_install

aaron@ares ~$ sudo easy_install BeautifulSoup
Searching for BeautifulSoup
Best match: BeautifulSoup 3.0.7a
Processing BeautifulSoup-3.0.7a-py2.5.egg
BeautifulSoup 3.0.7a is already the active version in easy-install.pth

Using /Library/Python/2.5/site-packages/BeautifulSoup-3.0.7a-py2.5.egg
Processing dependencies for BeautifulSoup
Finished processing dependencies for BeautifulSoup

.. or the normal boring way:

aaron@ares ~/Downloads$ curl http://www.crummy.com/software/BeautifulSoup/download/BeautifulSoup.tar.gz > bs.tar.gz
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 71460  100 71460    0     0  84034      0 --:--:-- --:--:-- --:--:--  111k

aaron@ares ~/Downloads$ tar -xzvf bs.tar.gz 
BeautifulSoup-3.1.0.1/
BeautifulSoup-3.1.0.1/BeautifulSoup.py
BeautifulSoup-3.1.0.1/BeautifulSoup.py.3.diff
BeautifulSoup-3.1.0.1/BeautifulSoupTests.py
BeautifulSoup-3.1.0.1/BeautifulSoupTests.py.3.diff
BeautifulSoup-3.1.0.1/CHANGELOG
BeautifulSoup-3.1.0.1/README
BeautifulSoup-3.1.0.1/setup.py
BeautifulSoup-3.1.0.1/testall.sh
BeautifulSoup-3.1.0.1/to3.sh
BeautifulSoup-3.1.0.1/PKG-INFO
BeautifulSoup-3.1.0.1/BeautifulSoup.pyc
BeautifulSoup-3.1.0.1/BeautifulSoupTests.pyc

aaron@ares ~/Downloads$ cd BeautifulSoup-3.1.0.1/

aaron@ares ~/Downloads/BeautifulSoup-3.1.0.1$ sudo python setup.py install
running install
<... snip ...>

I think it has changed again.

For posting this works in Xcode 8.2.

NotificationCenter.default.post(Notification(name:.UIApplicationWillResignActive)

My issue was also within the heredoc. I had it within an if/then statement and the closing bracket directly after the semicolon. So I moved the closing bracket to its own line and issue was fixed.

I changed:

... ;}

to:

... ;
}

Check out the code below for decimal to hexadecimal conversion,

import java.util.Scanner;

public class DecimalToHexadecimal
{
   public static void main(String[] args)
   {
      int temp, decimalNumber;
      String hexaDecimal = "";
      char hexa[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};

      Scanner sc = new Scanner(System.in);
      System.out.print("Please enter decimal number : ");
      decimalNumber = sc.nextInt();

      while(decimalNumber > 0)
      {
         temp = decimalNumber % 16;
         hexaDecimal = hexa[temp] + hexaDecimal;
         decimalNumber = decimalNumber / 16;
      }

      System.out.print("The hexadecimal value of " + decimalNumber + " is : " + hexaDecimal);      
      sc.close();
   }
}

You can learn more on different ways to convert decimal to hexadecimal in the following link >> java convert decimal to hexadecimal.

Now that the question is clearer, you can just do this in one grep

grep -R --include "*bills*" "put" .

With relevant flags

   -R, -r, --recursive
          Read  all  files  under  each  directory,  recursively;  this is
          equivalent to the -d recurse option.
   --include=GLOB
          Search only files whose base name matches GLOB  (using  wildcard
          matching as described under --exclude).

lace to store your loaded class definition and metadata. If a large code-base project is loaded, the insufficient Perm Gen size will cause the popular Java.Lang.OutOfMemoryError: PermGen.

The idea is to have equal size of message being sent from Kafka Producer to Kafka Broker and then received by Kafka Consumer i.e.

Kafka producer --> Kafka Broker --> Kafka Consumer

Suppose if the requirement is to send 15MB of message, then the Producer, the Broker and the Consumer, all three, needs to be in sync.

Kafka Producer sends 15 MB --> Kafka Broker Allows/Stores 15 MB --> Kafka Consumer receives 15 MB

The setting therefore should be:

a) on Broker:

message.max.bytes=15728640 
replica.fetch.max.bytes=15728640

b) on Consumer:

fetch.message.max.bytes=15728640

Here is a simple explanation about how to create a temp dir using templates.

1. Creates a temporary file or directory, safely, and prints its name.
2. TEMPLATE must contain at least 3 consecutive 'X's in last component.
3. If TEMPLATE is not specified, it will use tmp.XXXXXXXXXX
4. directories created are u+rwx, minus umask restrictions.

PARENT_DIR=./temp_dirs # (optional) specify a dir for your tempdirs
mkdir $PARENT_DIR

TEMPLATE_PREFIX='tmp' # prefix of your new tempdir template
TEMPLATE_RANDOM='XXXX' # Increase the Xs for more random characters
TEMPLATE=${PARENT_DIR}/${TEMPLATE_PREFIX}.${TEMPLATE_RANDOM}

# create the tempdir using your custom $TEMPLATE, which may include
# a path such as a parent dir, and assign the new path to a var
NEW_TEMP_DIR_PATH=$(mktemp -d $TEMPLATE)
echo $NEW_TEMP_DIR_PATH

# create the tempdir in parent dir, using default template
# 'tmp.XXXXXXXXXX' and assign the new path to a var
NEW_TEMP_DIR_PATH=$(mktemp -p $PARENT_DIR)
echo $NEW_TEMP_DIR_PATH

# create a tempdir in your systems default tmp path e.g. /tmp 
# using the default template 'tmp.XXXXXXXXXX' and assign path to var
NEW_TEMP_DIR_PATH=$(mktemp -d)
echo $NEW_TEMP_DIR_PATH

# Do whatever you want with your generated temp dir and var holding its path

This is not accurately addressing the question but since i stumbled across this and the above solutions didn't work for me or had requirements i couldn't meet, here is another way to add the BOM when you have access to vim:

vim -e -s +"set bomb|set encoding=utf-8|wq" filename.csv

Giving write permissions to all IIS_USRS group is a bad idea from the security point of view. You dont need to do that and you can go with giving permissions only to system user running the application pool.

If you are using II7 (and I guess you do) do the following.

1. Open IIS7
2. Select Website for which you need to modify permissions
3. Go to Basic Settings and see which application pool you're using.
4. Go to Application pools and find application pool from #3
5. Find system account used for running this application pool (Identity column)
6. Navigate to your storage folder in IIS, select it and click on Edit Permissions (under Actions sub menu on the right)
7. Open security tab and add needed permissions only for user you identified in #3

Note #1: if you see ApplicationPoolIdentity in #3 you need to reference this system user like this IIS AppPool{application_pool_name} . For example IIS AppPool\DefaultAppPool

Note #2: when adding this user make sure to set correct locations in the Select Users or Groups dialog. This needs to be set to local machine because this is local account.

I used FileReader to display image on click of the file upload button not using any Ajax requests. Following is the code hope it might help some one.

$(document).ready(function($) {
    $.extend( true, jQuery.fn, {        
        imagePreview: function( options ){          
            var defaults = {};
            if( options ){
                $.extend( true, defaults, options );
            }
            $.each( this, function(){
                var $this = $( this );              
                $this.bind( 'change', function( evt ){

                    var files = evt.target.files; // FileList object
                    // Loop through the FileList and render image files as thumbnails.
                    for (var i = 0, f; f = files[i]; i++) {
                        // Only process image files.
                        if (!f.type.match('image.*')) {
                        continue;
                        }
                        var reader = new FileReader();
                        // Closure to capture the file information.
                        reader.onload = (function(theFile) {
                            return function(e) {
                                // Render thumbnail.
                                    $('#imageURL').attr('src',e.target.result);                         
                            };
                        })(f);
                        // Read in the image file as a data URL.
                        reader.readAsDataURL(f);
                    }

                });
            });
        }   
    });
    $( '#fileinput' ).imagePreview();
});

You can try using parentheses around the OR expressions to make sure your query is interpreted correctly, or more concisely, use IN:

SELECT ads.*, location.county 
FROM ads
LEFT JOIN location ON location.county = ads.county_id
WHERE ads.published = 1 
AND ads.type = 13
AND ads.county_id IN (2,5,7,9)

The way you're writing your print statement is unnecessarily verbose. There's no need to separate the newline into its own string. This is sufficient.

print "hello.\n";

This realization will probably make your coding easier in general.

In addition to using use feature "say" or use 5.10.0 or use Modern::Perl to get the built in say feature, I'm going to pimp perl5i which turns on a lot of sensible missing Perl 5 features by default.

As per the official documentation of the jquery sortable UI: http://api.jqueryui.com/sortable/#method-toArray

In update event. use:

var sortedIDs = $( ".selector" ).sortable( "toArray" );

and if you alert or console this var (sortedIDs). You'll get your sequence. Please choose as the "Right Answer" if it is a right one.

One more option is to add the path of the privatekey file like this in terminal:

ssh-add "path to the privatekeyfile"

and then execute the pull command

maxlength ignored for input type="number"

That's correct, see documentation here

Instead you can use type="text" and use javascript function to allow number only.

Try this:

function onlyNumber(evt) {
    var charCode = (evt.which) ? evt.which : event.keyCode
    if (charCode > 31 && (charCode < 48 || charCode > 57)){
            return false;
        }
    return true;
}

<input type="text" maxlength="4" onkeypress="return onlyNumber(event)">

[ngStyle] with condition based if and else case.

<label for="file" [ngStyle]="isPreview ? {'cursor': 'default'} : {'cursor': 'pointer'}">Attachment

On StackOverflow, pressing the up-vote button is AJAX whereas typing in your question or answer and seeing it appear in the real-time preview window below it is JavaScript (JQuery).

This means that the difference between AJAX and Javascript is that AJAX allows you to communicate with the server without doing a page refresh (i.e. going to a new page) whereas JavaScript (JQuery) allows you to embed logic and behaviour on your page. Of course, with this logic you create AJAX as well.

Other answers work, but

To get the full/default price:

$product->get_price_html();

I would like to add two points to the discussion:

1. You can use None instead on an empty space to specify "from the start" or "to the end":

   'abcde'[2:None] == 'abcde'[2:] == 'cde'
   

   This is particularly helpful in functions, where you can't provide an empty space as an argument:

   def substring(s, start, end):
       """Remove `start` characters from the beginning and `end` 
       characters from the end of string `s`.
   
       Examples
       --------
       >>> substring('abcde', 0, 3)
       'abc'
       >>> substring('abcde', 1, None)
       'bcde'
       """
       return s[start:end]
   

2. Python has slice objects:

   idx = slice(2, None)
   'abcde'[idx] == 'abcde'[2:] == 'cde'
   

Also you can do this with keypress event.

 private void textBox1_EnterKeyPress(object sender, KeyEventArgs e)

 {

  if (e.KeyCode == Keys.Enter)
   {
     // some code what you wanna do
   }


}

This worked for me:

string Connection = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source="
    + HttpContext.Current.Server.MapPath("\\myPath\\myFile.db")
    + ";Extended Properties=\"Excel 12.0 Xml;HDR=YES\"";

I'm querying an XLSX file so don't worry about any of the other stuff in the connection string but the Data Source.

So my answer is:

HttpContext.Current.Server.MapPath("\\myPath\\myFile.db")

Take a look on pprint, The pprint module provides a capability to “pretty-print” arbitrary Python data structures in a form which can be used as input to the interpreter. If the formatted structures include objects which are not fundamental Python types, the representation may not be loadable. This may be the case if objects such as files, sockets or classes are included, as well as many other objects which are not representable as Python literals.

>>> import pprint
>>> stuff = ['spam', 'eggs', 'lumberjack', 'knights', 'ni']
>>> stuff.insert(0, stuff[:])
>>> pp = pprint.PrettyPrinter(indent=4)
>>> pp.pprint(stuff)
[   ['spam', 'eggs', 'lumberjack', 'knights', 'ni'],
    'spam',
    'eggs',
    'lumberjack',
    'knights',
    'ni']
>>> pp = pprint.PrettyPrinter(width=41, compact=True)
>>> pp.pprint(stuff)
[['spam', 'eggs', 'lumberjack',
  'knights', 'ni'],
 'spam', 'eggs', 'lumberjack', 'knights',
 'ni']
>>> tup = ('spam', ('eggs', ('lumberjack', ('knights', ('ni', ('dead',
... ('parrot', ('fresh fruit',))))))))
>>> pp = pprint.PrettyPrinter(depth=6)
>>> pp.pprint(tup)
('spam', ('eggs', ('lumberjack', ('knights', ('ni', ('dead', (...)))))))

Here are the most common reasons

• Incorrect file paths

• File names are misspelled

• Wrong file extension

• Files are missing

• The read permission has not been set for the image(s)

Note: On *nix systems, consider using the following command to add read permission for an image:

chmod o+r imagedirectoryAddress/imageName.extension

or this command to add read permission for all images:

chmod o+r imagedirectoryAddress/*.extension

If you need more information, refer to this post.

Be sure to define the DEBUG constant in the Project Build Properties. This will enable the #if DEBUG. I don't see a pre-defined RELEASE constant, so that could imply that anything Not in a DEBUG block is RELEASE mode.

If your protocol is http and you are using Subversion 1.7, you can switch the user at anytime by simply using the global --username option on any command.

When Ingo's method didn't work for me, this was what I found that worked.

android.os.Process.killProcess(android.os.Process.myPid());

This code kill the process from OS Using this code disturb the OS. So I would recommend you to use the below code

this.finish();
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);

For a structure definition that is to be used across more than one source file, you should definitely put it in a header file. Then include that header file in any source file that needs the structure.

The extern declaration is not used for structure definitions, but is instead used for variable declarations (that is, some data value with a structure type that you have defined). If you want to use the same variable across more than one source file, declare it as extern in a header file like:

extern struct a myAValue;

Then, in one source file, define the actual variable:

struct a myAValue;

If you forget to do this or accidentally define it in two source files, the linker will let you know about this.

I came across this issue, however my inline function was withing an angularJS view. Therefore on the load i could not access the inline script to add the debug, as only the index.html was available in the sources tab of the debugger.

This meant that when i was opening the particular view with my inline (had no choice on this) it was not accessible.

The onlly way i was able to hit it was to put an erroneous function or call inside the inline JS function.

My solution included :

function doMyInline(data) {
        //Throw my undefined error here. 
        $("select.Sel").debug();

        //This is the real onclick i was passing to 
        angular.element(document.getElementById(data.id)).scope().doblablabla(data.id);
    }

This mean when i clicked on my button, i was then prompted in the chrome consolse.

Uncaught TypeError: undefined is not a function 

The important thing here was the source of this : VM5658:6 clicking on this allowed me to step through the inline and hold the break point there for later..

Extremely convoluted way of reaching it.. But it worked and might prove useful for when dealing with Single page apps which dynamically load your views.

The VM[n] has no significant value, and the n on equates to the script ID. This info can be found here : Chrome "[VM]"

In 12c you can make use of the fact that columns which are set from invisible to visible are displayed as the last column of the table: Tips and Tricks: Invisible Columns in Oracle Database 12c

Maybe that is the 'trick' @jeffrey-kemp was talking about in his comment, but the link there does not work anymore.

Example:

ALTER TABLE my_tab ADD (col_3 NUMBER(10));
ALTER TABLE my_tab MODIFY (
  col_1 invisible,
  col_2 invisible
);
ALTER TABLE my_tab MODIFY (
  col_1 visible,
  col_2 visible
);

Now col_3 would be displayed first in a SELECT * FROM my_tab statement.

Note: This does not change the physical order of the columns on disk, but in most cases that is not what you want to do anyway. If you really want to change the physical order, you can use the DBMS_REDEFINITION package.

My issue - I had port 22 open for "My IP" and changed the internet connection and IP address change caused. So had to change it back.

I wanted to provide a functional answer to this question to complement the existing answer:

const ordinalSuffix = ['st', 'nd', 'rd']
const addSuffix = n => n + (ordinalSuffix[(n - 1) % 10] || 'th')
const numberToOrdinal = n => `${n}`.match(/1\d$/) ? n + 'th' : addSuffix(n)

we've created an array of the special values, the important thing to remember is arrays have a zero based index so ordinalSuffix[0] is equal to 'st'.

Our function numberToOrdinal checks if the number ends in a teen number in which case append the number with 'th' as all then numbers ordinals are 'th'. In the event that the number is not a teen we pass the number to addSuffix which adds the number to the ordinal which is determined by if the number minus 1 (because we're using a zero based index) mod 10 has a remainder of 2 or less it's taken from the array, otherwise it's 'th'.

sample output:

numberToOrdinal(1) // 1st
numberToOrdinal(2) // 2nd
numberToOrdinal(3) // 3rd
numberToOrdinal(4) // 4th
numberToOrdinal(5) // 5th
numberToOrdinal(6) // 6th
numberToOrdinal(7) // 7th
numberToOrdinal(8) // 8th
numberToOrdinal(9) // 9th
numberToOrdinal(10) // 10th
numberToOrdinal(11) // 11th
numberToOrdinal(12) // 12th
numberToOrdinal(13) // 13th
numberToOrdinal(14) // 14th
numberToOrdinal(101) // 101st

Maybe not the best solution, (will rewrite history) but you could also do git reset --hard <hash of detached head commit>.

I assume you install gems into vendor/bundle? If so, why not just delete all the gems and do a clean bundle install?

I ran into this error sporadically and could not understand. Googling did not help.

I finally found out. I run a couple of docker containers, among them NGINX and Apache. The command at hand addresses a specific container, running Apache. As it turned out, I also have a cron job doing some heavy lifting at times running on the same container. Depending on the load this cron job puts on this container, it was not able to answer my command in a timely manner, resulting in error 52 empty reply from server or even 502 Bad Gateway.

I discovered and verified this by plain curl when I noticed that the process I investigated took less than 2 seconds and all of a sudden I got a 52 error and then a 502 error and then again less than 2 seconds - so it was definitely not my code which was unchanged. Using ps aux within the container I saw the other process running and understood.

Actually, I was bothered by 502 Bad Gateway from NGINX with long running jobs and could not fix it with the appropriate parameters, so I finally gave up and switched these things to Apache. That's why I was puzzled even more about these errors.

The remedy is simple. I just fired up some more instances of this container with docker service scale and that was it. docker load balances on its own.

Well, there is more to this as another example showed. This time I did some repetitious jobs.

I found out that after some time I ran out of memory used by PHP which cannot be reclaimed, so the process died.

Why? Having more than a dozen containers on a 8GB RAM machine, I initially thought it would be a good idea to limit RAM usage on PHP containers to 50MB.

Stupid! I forgot about it, but swarmpit gave me a hint. I call ini_set("memory_limit",-1); in the constructor of my class, but that only went as far as those 50MB.

So I removed those restrictions from my compose file. Now those containers may use up to 8GB. The process runs with Apache for hours now and it looks like the problem is solved, memory usage rising to well beyond 100MB.

Another caveat: To easily get and read debug messages, I started said process in Opera under Windows. That is fine with errors appearing soon.

However, if the last one is cared for, quite naturally the process runs and runs and memory usage in the browser builds up, eventually making my local machine unusable. So if that happens, kill this tab and the process keeps running fine.

It's important to make the difference between the App language and the device locale language (The code below is in Swift 3)

Will return the Device language:

let locale = NSLocale.current.languageCode

Will return the App language:

let pre = Locale.preferredLanguages[0]

If you use brew to install maven, then the settings file should be in

/usr/local/Cellar/maven/<version>/libexec/conf

One main reason we went with Workstation over Player at my job is because we need to run VMs that use a physical disk as their hard drive instead of a virtual disk. Workstation supports using physical disks while Player does not.

If you want to change the font size then simply follow. Preferences-> Default File preferences.

After clicking on default file preferences, new Tab will open with name of Default File Type.Sublime-options

After find Font properties like font Courier New 12 we (recommend to use CTRL+F) then change size of it. Click save and instantly you can see the changes.

• If you put type=submit it is a Submit Button
• if you put type=button it is just a button, It does not submit your form inputs.

and also you don't want to use both of these

login to developer account of apple and open the provision profile that you have selected in settings and add the device . The device will automatically displayed if connected to PC.

Because I encountered this issue just a little while ago, and the options for Rails 3.0 are a bit different, I'll provide another answer to this question.

In Rails 3.0 you want to do something like this:

class MyModel < ActiveRecord::Base
  after_initialize :default_values

  private
    def default_values
      self.name ||= "default value"
    end
end

FrameLayout is not the better way to do this:

Use RelativeLayout instead. You can position the elements anywhere you like. The element that comes after, has the higher z-index than the previous one (i.e. it comes over the previous one).

Example:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent" android:layout_height="match_parent">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/colorPrimary"
        app:srcCompat="@drawable/ic_information"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="This is a text."
        android:layout_centerHorizontal="true"
        android:layout_alignParentBottom="true"
        android:layout_margin="8dp"
        android:padding="5dp"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:background="#A000"
        android:textColor="@android:color/white"/>
</RelativeLayout>

The answer for the last two can also be deducted from the golden rule in C:

Declaration follows use.

int (*arr2)[8];

What happens if you dereference arr2? You get an array of 8 integers.

int *(arr3[8]);

What happens if you take an element from arr3? You get a pointer to an integer.

This also helps when dealing with pointers to functions. To take sigjuice's example:

float *(*x)(void )

What happens when you dereference x? You get a function that you can call with no arguments. What happens when you call it? It will return a pointer to a float.

Operator precedence is always tricky, though. However, using parentheses can actually also be confusing because declaration follows use. At least, to me, intuitively arr2 looks like an array of 8 pointers to ints, but it is actually the other way around. Just takes some getting used to. Reason enough to always add a comment to these declarations, if you ask me :)

edit: example

By the way, I just stumbled across the following situation: a function that has a static matrix and that uses pointer arithmetic to see if the row pointer is out of bounds. Example:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define NUM_ELEM(ar) (sizeof(ar) / sizeof((ar)[0]))

int *
put_off(const int newrow[2])
{
    static int mymatrix[3][2];
    static int (*rowp)[2] = mymatrix;
    int (* const border)[] = mymatrix + NUM_ELEM(mymatrix);

    memcpy(rowp, newrow, sizeof(*rowp));
    rowp += 1;
    if (rowp == border) {
        rowp = mymatrix;
    }

    return *rowp;
}

int
main(int argc, char *argv[])
{
    int i = 0;
    int row[2] = {0, 1};
    int *rout;

    for (i = 0; i &lt; 6; i++) {
        row[0] = i;
        row[1] += i;
        rout = put_off(row);
        printf("%d (%p): [%d, %d]\n", i, (void *) rout, rout[0], rout[1]);
    }

    return 0;
}

Output:

0 (0x804a02c): [0, 0]
1 (0x804a034): [0, 0]
2 (0x804a024): [0, 1]
3 (0x804a02c): [1, 2]
4 (0x804a034): [2, 4]
5 (0x804a024): [3, 7]

Note that the value of border never changes, so the compiler can optimize that away. This is different from what you might initially want to use: const int (*border)[3]: that declares border as a pointer to an array of 3 integers that will not change value as long as the variable exists. However, that pointer may be pointed to any other such array at any time. We want that kind of behaviour for the argument, instead (because this function does not change any of those integers). Declaration follows use.

(p.s.: feel free to improve this sample!)

Renaming .bashrc to .profile (or soft-linking the latter to the former) should also do the trick. See here.

Use : instead of =

see the example below that gives an error

app.post('/mews', (req, res) => {
if (isValidMew(req.body)) {
    // insert into db
    const mew = {
        name = filter.clean(req.body.name.toString()),
        content = filter.clean(req.body.content.toString()),
        created: new Date()
    };

That gives Syntex Error: invalid shorthand proprty initializer.

Then i replace = with : that's solve this error.

app.post('/mews', (req, res) => {
if (isValidMew(req.body)) {
    // insert into db
    const mew = {
        name: filter.clean(req.body.name.toString()),
        content: filter.clean(req.body.content.toString()),
        created: new Date()
    };

select to_timestamp(cast(epoch_ms/1000 as bigint))::date

worked for me

I've found that using:

<img src="file://null">

will not make a request and validates correctly.

The browsers will simply block the access to the local file system.

But there might be an error displayed in console log in Chrome for example:

Not allowed to load local resource: file://null/

The big problem with this exception is that its usually not reproducible in a test environment and we are not around to run innodb engine status when it happens on prod. So in one of the projects I put the below code into a catch block for this exception. That helped me catch the engine status when the exception happened. That helped a lot.

Statement st = con.createStatement();
ResultSet rs =  st.executeQuery("SHOW ENGINE INNODB STATUS");
while(rs.next()){
    log.info(rs.getString(1));
    log.info(rs.getString(2));
    log.info(rs.getString(3));
}

if($('#postcode_div').is(':visible')) {
    if($('#postcode_text').val()=='') {
        $('#spanPost').text('\u00a0');
    } else {
        $('#spanPost').text($('#postcode_text').val());
}

Downloads and Unzip

You can download openssl for windows 32 and 64 bit from the respective links below:

https://code.google.com/archive/p/openssl-for-windows/downloads

OpenSSL for 64 Bits OpenSSL for 32 Bits

keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%\.android\debug.keystore | **"C:\Users\keshav.gera\openssl-0.9.8k_X64\bin**\openssl.exe" sha1 -binary | **"C:\Users\keshav.gera\openssl-0.9.8k_X64\bin**\openssl.exe" base64

Important change our path Here as well as install open ssl in your system

It's Working No Doubt

C:\Users\keshav.gera>keytool -exportcert -alias androiddebugkey -keystore %HOMEPATH%\.android\debug.keystore | "C:\Users\keshav.gera\openssl-0.9.8k_X64\bin\openssl.exe" sha1 -binary | "C:\Users\keshav.gera\openssl-0.9.8k_X64\bin\openssl.exe" base64

Enter keystore password: android

**ZrRtxw36xWNYL+h3aJdcCeQQxi0=**

=============================================================

using Manually through Coding

import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.Signature;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;


private void PrintHashKey() {

        try {
            PackageInfo info = getPackageManager().getPackageInfo("**com.keshav.patanjalidemo  Your Package Name Here**", PackageManager.GET_SIGNATURES);
            for (Signature signature : info.signatures) {
                MessageDigest md = MessageDigest.getInstance("SHA");        
                md.update(signature.toByteArray());
                Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
            }
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }

    }

I have just got an solution a little bit easier do get an list out of an JSON object. Hope this can help.

I got an JSON like this:

{"Accounts":"[{\"bank\":\"Itau\",\"account\":\"456\",\"agency\":\"0444\",\"digit\":\"5\"}]"}

And made some types like this

    public class FinancialData
{
    public string Accounts { get; set; } // this will store the JSON string
    public List<Accounts> AccountsList { get; set; } // this will be the actually list. 
}

    public class Accounts
{
    public string bank { get; set; }
    public string account { get; set; }
    public string agency { get; set; }
    public string digit { get; set; }

}

and the "magic" part

 Models.FinancialData financialData = (Models.FinancialData)JsonConvert.DeserializeObject(myJSON,typeof(Models.FinancialData));
        var accounts = JsonConvert.DeserializeObject(financialData.Accounts) as JArray;

        foreach (var account in  accounts)
        {
            if (financialData.AccountsList == null)
            {
                financialData.AccountsList = new List<Models.Accounts>();
            }

            financialData.AccountsList.Add(JsonConvert.DeserializeObject<Models.Accounts>(account.ToString()));
        }

Below Code May Be Help You :

<html>
<head>
<script>
function printPage(id)
{
   var html="<html>";
   html+= document.getElementById(id).innerHTML;

   html+="</html>";

   var printWin = window.open('','','left=0,top=0,width=1,height=1,toolbar=0,scrollbars=0,status  =0');
   printWin.document.write(html);
   printWin.document.close();
   printWin.focus();
   printWin.print();
   printWin.close();
}
</script>
</head>
<body>
<div id="block1">
<table border="1" >
</tr>
<th colspan="3">Block 1</th>
</tr>
<tr>
<th>1</th><th>XYZ</th><th>athock</th>
</tr>
</table>

</div>

<div id="block2">
    This is Block 2 content
</div>

<input type="button" value="Print Block 1" onclick="printPage('block1');"></input>
<input type="button" value="Print Block 2" onclick="printPage('block2');"></input>
</body>
</html>

Okay, I'm not going to tell you a magical way of doing it because there isn't. If you have an action attribute set for a form element, it will redirect.

If you don't want it to redirect simply don't set any action and set onsubmit="someFunction();"

In your someFunction() you do whatever you want, (with AJAX or not) and in the ending, you add return false; to tell the browser not to submit the form...

You can add element to arrayList using add() method in Kotlin. For example,

arrayList.add(10)

Above code will add element 10 to arrayList.

However, if you are using Array or List, then you can not add element. This is because Array and List are Immutable. If you want to add element, you will have to use MutableList.

Several workarounds:

1. Using System.arraycopy() method: You can achieve same target by creating new array and copying all the data from existing array into new one along with new values. This way you will have new array with all desired values(Existing and New values)
2. Using MutableList:: Convert array into mutableList using toMutableList() method. Then, add element into it.
3. Using Array.copyof(): Somewhat similar as System.arraycopy() method.

@tokland

tried your code and corrected it for 3.4 and windows dir.cmd is a simple dir command, saved as cmd-file

import subprocess
c = "dir.cmd"

def execute(command):
    popen = subprocess.Popen(command, stdout=subprocess.PIPE,bufsize=1)
    lines_iterator = iter(popen.stdout.readline, b"")
    while popen.poll() is None:
        for line in lines_iterator:
            nline = line.rstrip()
            print(nline.decode("latin"), end = "\r\n",flush =True) # yield line

execute(c)

Put the following in B3 (credit to @Alexander-Ivanov for the countif condition):

={UNIQUE(A3:A),ARRAYFORMULA(COUNTIF(UNIQUE(A3:A),"=" & UNIQUE(A3:A)))}

Benefits: It only requires editing 1 cell, it includes the name filtered by uniqueness, and it is concise.

Downside: it runs the unique function 3x

To use the unique function only once, split it into 2 cells:

B3: =UNIQUE(A3:A)

C3: =ARRAYFORMULA(COUNTIF(B3:B,"=" & B3:B))

Prevent saving changes that require table re-creation

Five swift clicks

1. Tools
2. Options
3. Designers
4. Prevent saving changes that require table re-creation
5. OK.

After saving, repeat the proceudure to re-tick the box. This safe-guards against accidental data loss.

Further explanation

• By default SQL Server Management Studio prevents the dropping of tables, because when a table is dropped its data contents are lost.*

• When altering a column's datatype in the table Design view, when saving the changes the database drops the table internally and then re-creates a new one.

*Your specific circumstances will not pose a consequence since your table is empty. I provide this explanation entirely to improve your understanding of the procedure.

2012 This is a better solution for this scenario (tested With Visual Studio 2008):

Configuration config = WebConfigurationManager.OpenWebConfiguration(HttpContext.Current.Request.ApplicationPath);
config.AppSettings.Settings.Remove("MyVariable");
config.AppSettings.Settings.Add("MyVariable", "MyValue");
config.Save();

Update 2018 =>
Tested in vs 2015 - Asp.net MVC5

var config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");
config.AppSettings.Settings["MyVariable"].Value = "MyValue";
config.Save();

if u need to checking element exist, use this code:

var config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");
if (config.AppSettings.Settings["MyVariable"] != null)
{
config.AppSettings.Settings["MyVariable"].Value = "MyValue";
}
else { config.AppSettings.Settings.Add("MyVariable", "MyValue"); }
config.Save();

A simple alternative to using a custom UserType is to construct a new java.util.Date in the setter for the date property in your persisted bean, eg:

import java.util.Date;
import javax.persistence.Entity;
import javax.persistence.Column;

@Entity
public class Purchase {

    private Date date;

    @Column
    public Date getDate() {
        return this.date;
    }

    public void setDate(Date date) {
        // force java.sql.Timestamp to be set as a java.util.Date
        this.date = new Date(date.getTime());
    }

}

Type "bash -x" on the command line before the name of the Bash script. For instance, to execute foo.sh, type:

bash -x foo.sh

There's a headers parameter in the config object you pass to $http for per-call headers:

$http({method: 'GET', url: 'www.google.com/someapi', headers: {
    'Authorization': 'Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ=='}
});

Or with the shortcut method:

$http.get('www.google.com/someapi', {
    headers: {'Authorization': 'Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ=='}
});

The list of the valid parameters is available in the $http service documentation.