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Is there a simple, elegant way to define singletons? [duplicate]
...the imports. For example, Python logging is a module level interface. In order to ensure you fully clean up after logging you must call logging.shutdown(). This means you must import logging into the module which calls shutdown. If it was a singleton pattern it is possible to call shutdown on th...
How to make an AJAX call without jQuery?
...our code execution will go on, while your file loads in the background. In order to use the content of the file in your script you need a mechanism that tells your script when the file finished loading or failed loading. That's where promises come in handy. There are other ways to solve this problem...
Why do loggers recommend using a logger per class?
...ivate static readonly ILog _logger =
LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
public void SomeMethod()
{
_logger.DebugFormat("File not found: {0}", _filename);
}
One logger per app (or similar)
Logger.DebugFormat("File not found: {0}", _filename); // Logger...
Symfony 2 EntityManager injection in service
..."@doctrine.orm.entity_manager" ]
And then they would be available in the order they were listed via the arguments (if there are more than 1).
public function __construct(EntityManager $entityManager) {
$this->em = $entityManager;
}
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Scanning Java annotations at runtime [closed]
...7, they should probably go with Reflections. Also, if you are using guava/etc and want to change out the collections, easy as pie. Great comments inside too.
– Andrew Backer
Sep 25 '14 at 10:52
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How to make child process die after parent exits?
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The argument order of the dup2() call is wrong. If you want to use pipes[0] as stdin you have to write dup2(pipes[0], 0) instead of dup2(0, pipes[0]). It isdup2(oldfd, newfd) where the call closes a previously open newfd.
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JavaScript get element by name
...th property, but it's also missing a lot of methods, such as map, forEach, etc. Which explains why we need to use: Array.prototype.forEach.call( NodeList, fn ).
– Florian Margaine
Apr 24 '12 at 21:32
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Android selector & text color
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In order to make it work on selection in a list view use the following code:
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:color="#fff"/>
&...
ASP.NET MVC Razor Concatenation
...u can even use this way to concat more strings:
<li id="@("item-"+item.Order + "item_"+item.ShopID)" class="ui-state-default"></li>
Here is another post.
Hope helps someone.
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ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
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