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error: ‘NULL’ was not declared in this scope
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Now that C++11 is more generally supported by compilers, it might be worth mentioning the nullptr keyword, which is an actual keyword and doesn't require any #includes. It's also more typesafe than NULL.
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What Xcode keyboard shortcuts do you use regularly? [closed]
...quently use cmd-option-j to filter then navigate to source files. However now I find the open quickly command better (cmd-shift-O , type a few chars, return)
– Robert
Nov 30 '12 at 12:45
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What to learn for making Java web applications in Java EE 6? [closed]
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Even if I know that this will be controversial, my advice would be to start with Java EE 6 only. So, grab GlassFish v3 and either get the book Beginning Java EE 6 Platform with GlassFish 3: From Novice to Professional or follow the Java...
How do I fix blurry text in my HTML5 canvas?
...is ratio is 2. This essentially means that your 1000px width canvas would now need to fill 2000px to match it's stated width on the iPad display. Fortunately for us, this is done automatically by the browser. On the other hand, this is also the reason why you see less definition on images and can...
Update built-in vim on Mac OS X
I know this might be more appropriate at Ask Different, but as I tried adding tags there, there was no vim tag, only macvim . So I figured I might get a better audience here.
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How to use gitignore command in git
...nch on github and it pushed all the library and documents into the github. Now what can I do and how can I use gitignore command to avoid the same mistake again.
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How does the keyword “use” work in PHP and can I import classes with it?
...you have two classes with the same name, put them in different namespaces. Now consider when your auto loader is loading both classes (does by require), and you are about to use object of class. In this case, the compiler will get confused which class object to load among two. To help the compiler m...
How to find the operating system version using JavaScript?
...Note that oscpu attribute gives you the Windows version. Also, you should know that:
'Windows 3.11' => 'Win16',
'Windows 95' => '(Windows 95)|(Win95)|(Windows_95)',
'Windows 98' => '(Windows 98)|(Win98)',
'Windows 2000' => '(Windows NT 5.0)|(Windows 2000)',
'Windows XP' => '(Windows...
How to initialize an array's length in JavaScript?
...(function () {}) gives you an array with length 5 and undefined as values, now it can be iterated over.
Array.apply(null, Array(5)).map(function (x, i) { return i; }) gives you an array with length 5 and values 0,1,2,3,4.
Array(5).forEach(alert) does nothing, Array.apply(null, Array(5)).forEach(aler...
Best practices to handle routes for STI subclasses in rails
...rson < Contact
def self.model_name
Contact.model_name
end
end
Now url_for @person will map to contact_path as expected.
How it works: URL helpers rely on YourModel.model_name to reflect upon the model and generate (amongst many things) singular/plural route keys. Here Person is basical...