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What isstdafx.h” used for in Visual Studio?

...rocess. Compiling the huge header structures that form part of Windows API and other large API libraries is a very, very long, slow process. To have to do it over, and over, and over for every single Cpp source file is a death knell. This is not unique to Windows but an old problem faced by all com...
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How do I define and use an ENUM in Objective-C?

I declared an enum in my implementation file as shown below, and declared a variable of that type in my interface as PlayerState thePlayerState; and used the variable in my methods. But I am getting errors stating that it is undeclared. How do I correctly declare and use a variable of type PlayerSta...
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Bootstrap 3 collapsed menu doesn't close on click

I have a more or less standard navigation from bootstrap 3 24 Answers 24 ...
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What does the thread_local mean in C++11?

I am confused with the description of thread_local in C++11. My understanding is, each thread has unique copy of local variables in a function. The global/static variables can be accessed by all the threads (possibly synchronized access using locks). And the thread_local variables are visible to...
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Check whether HTML element has scrollbars

... fails in many cases. If your element has overflow: visible; width: 200px; and has a child with a 500px width, your element has no scroll bars but has a scrollWidth of 500px and a clientWidth of 200px. – Joseph Lennox Mar 5 '14 at 21:17 ...
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Gradient of n colors ranging from color 1 and color 2

...adients nice ( click here for an example ). I have a need to work in base and I think scales can be used there to create color gradients as well but I'm severely off the mark on how. The basic goal is generate a palette of n colors that ranges from x color to y color. The solution needs to work...
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Unicode character as bullet for list-item in CSS

...probably go for an image background, they're much more efficient versatile and cross-browser-friendly. Here's an example: <style type="text/css"> ul {list-style:none;} /* you should use a css reset too... ;) */ ul li {background:url(images/icon_star.gif) no-repeat 0 5px;} </style> ...
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Is there an equivalent of CSS max-width that works in HTML emails?

...n all widely used email clients. I'm wrapping the whole email in a table, and I'd like it to have a width that is up to 98% of the available width, but no greater than 800 pixels. Like this: <table style="width:98%; max-width:800px;"> ...
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'POCO' definition

... someone define what exactly 'POCO' means? I am encountering the term more and more often, and I'm wondering if it is only about plain classes or it means something more? ...
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When to use an object instance variable versus passing an argument to the method

...To some degree, when to use instance variables, how to define their scope, and when to use local variables is subjective, but there are a couple of rules of thumb you can follow whenever creating your classes. Instance variables are typically considered to be attributes of a class. Think of these ...