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How to concatenate a std::string and an int?
... Ben HoffsteinBen Hoffstein
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What does $$ (dollar dollar or double dollar) mean in PHP?
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It's a variable's variable.
<?php
$a = 'hello';
$$a = 'world'; // now makes $hello a variable that holds 'world'
echo "$a ${$a}"; // "hello world"
echo "$a $hello"; // "hello world"
?>
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When and how should I use a ThreadLocal variable?
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The ThreadLocal.get() method will call ThreadLocal.initialValue() (once) for each thread, which means that a SimpleDateFormat object is created for each thread. Isn't it better then just to have SimpleDateFormat as local variables(since we don't have to deal w...
How do I drag and drop files into an application?
...blokeCAD bloke
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Convert DateTime to String PHP
I have already researched a lot of site on how can I convert PHP DateTime object to String. I always see "String to DateTime" and not "DateTime to String"
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How can I implode an array while skipping empty array items?
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You can use array_filter():
If no callback is supplied, all entries of input equal to FALSE (see converting to boolean) will be removed.
implode('-', array_filter($array));
Obviously this will not work if you have 0 (or any other value that evaluates to f...
What is non-blocking or asynchronous I/O in Node.js?
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Synchronous vs Asynchronous
Synchronous execution usually refers to code executing in sequence. Asynchronous execution refers to execution that doesn't run in the sequence it appears in the code. In the following example, the synchronous operation causes the alerts to fire in s...
Join a list of items with different types as string in Python
...eallyourcode
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What is the difference between Amazon S3 and Amazon EC2 instance?
...s like a remote computer running Windows or Linux and on which you can install whatever software you want, including a Web server running PHP code and a database server.
Amazon S3 is just a storage service, typically used to store large binary files. Amazon also has other storage and database servi...
How to build a Debian/Ubuntu package from source?
... Alexis Wilke
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answered Mar 6 '11 at 0:10
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