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What is “stdafx.h” used for in Visual Studio?
A file named stdafx.h is automatically generated when I start a project in Visual Studio 2010. I need to make a cross-platform C++ library, so I don't/can't use this header file.
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What Every Programmer Should Know About Memory?
...lrich Drepper's What Every Programmer Should Know About Memory from 2007 is still valid. Also I could not find a newer version than 1.0 or an errata.
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What do the makefile symbols $@ and $< mean?
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$@ is the name of the target being generated, and $< the first prerequisite (usually a source file). You can find a list of all these special variables in the GNU Make manual.
For example, consider the following declaration:
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What's the difference between `on` and `live` or `bind`?
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on() is an attempt to merge most of jQuery's event binding functions into one. This has the added bonus of tidying up the inefficiencies with live vs delegate. In future versions of jQuery, these methods will be removed and only...
Calling closure assigned to object property directly
...irectly without reassigning the closure to a variable and then calling it. Is this possible?
12 Answers
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Determine if an element has a CSS class with jQuery
I'm working with jQuery and looking to see if there is an easy way to determine if the element has a specific CSS class associated with it.
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sed edit file in place
I am trying to find out if it is possible to edit a file in a single sed command without manually streaming the edited content into a new file and then renaming the new file to the original file name. I tried the -i option but my Solaris system said that -i is an illegal option. Is there a d...
What is ActiveMQ used for - can we apply messaging concept using a Database?
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It is used to reliably communicate between two distributed processes.
Yes, you could store messages in a Database to communicate between two processes, but, as soon as the message is received you'd have to DELETE the message,...
How to delete multiple values from a vector?
...LSE FALSE
> a [! a %in% remove]
[1] 10 7 1 6 4 8 9
Note that this will silently remove incomparables (stuff like NA or Inf) as well (while it will keep duplicate values in a as long as they are not listed in remove).
If a can contain incomparables, but remove will not, we can use matc...
How do I convert an enum to a list in C#? [duplicate]
Is there a way to convert an enum to a list that contains all the enum's options?
14 Answers
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