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What does “export” do in shell programming? [duplicate]
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Exported variables such as $HOME and $PATH are available to (inherited by) other programs run by the shell that exports them (and the programs run by those other programs, and so on) as environment variables. Regular (non-exported) variables are not availab...
JSON datetime between Python and JavaScript
...end a datetime.datetime object in serialized form from Python using JSON and de-serialize in JavaScript using JSON. What is the best way to do this?
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Why check both isset() and !empty()
Is there a difference between isset and !empty . If I do this double boolean check, is it correct this way or redundant? and is there a shorter way to do the same thing?
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Casting to string in JavaScript
...avaScript.
I searched for those three options in the jQuery source code, and they are all in use .
I would like to know if there are any differences between them:
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HTML tag want to add both href and onclick working
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</script>
The default behavior of the <a> tag's onclick and href properties is to execute the onclick, then follow the href as long as the onclick doesn't return false, canceling the event (or the event hasn't been prevented)
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How do I get rid of “[some event] never used” compiler warnings in Visual Studio?
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This appears to be warning 67 and can thus be suppressed with:
#pragma warning disable 67
Don't forget to restore it as soon as possible (after the event declaration) with:
#pragma warning restore 67
However, I'd check again and make sure you're r...
ASP.NET 2.0 - How to use app_offline.htm
... of a .NET 2.0 application which will in essence shut down the application and disable any other pages from being requested.
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PDO MySQL: Use PDO::ATTR_EMULATE_PREPARES or not?
...nswer your concerns:
MySQL >= 5.1.17 (or >= 5.1.21 for the PREPARE and EXECUTE statements) can use prepared statements in the query cache. So your version of MySQL+PHP can use prepared statements with the query cache. However, make careful note of the caveats for caching query results in the...
How to delete projects in IntelliJ 12?
...of the project you just deleted. So I am thinking there should be another (and really easy way) to delete a project.
10 Ans...
foreach vs someList.ForEach(){}
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There is one important, and useful, distinction between the two.
Because .ForEach uses a for loop to iterate the collection, this is valid (edit: prior to .net 4.5 - the implementation changed and they both throw):
someList.ForEach(x => { if(x....