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What is the difference between char, nchar, varchar, and nvarchar in SQL Server?
...torage space for number of characters you specify even if you don't use up all that space.
varchar and nvarchar are variable-length which will only use up spaces for the characters you store. It will not reserve storage like char or nchar.
nchar and nvarchar will take up twice as much storage spac...
What is the “hasClass” function with plain JavaScript?
...ok at jQuery's source code on github or at the source for hasClass specifically in this source viewer.
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How do I get the RootViewController from a pushed controller?
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Use the viewControllers property of the UINavigationController. Example code:
// Inside another ViewController
NSArray *viewControllers = self.navigationController.viewControllers;
UIViewController *rootViewController = [viewControllers objectAtIndex:viewControllers.count - 2];
This is t...
Parse (split) a string in C++ using string delimiter (standard C++)
...f your string delimiter, then use std::string::substr() to get a token.
Example:
std::string s = "scott>=tiger";
std::string delimiter = ">=";
std::string token = s.substr(0, s.find(delimiter)); // token is "scott"
The find(const string& str, size_t pos = 0) function returns the posit...
Can anyone explain python's relative imports?
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Thanks, but this honestly seems really silly. For such a beautiful language, I can't believe the designers would create such a restriction. Isn't there any other way?
– carl
Dec 16 '09 at 23:48
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Split Java String by New Line
...uld cover you:
String lines[] = string.split("\\r?\\n");
There's only really two newlines (UNIX and Windows) that you need to worry about.
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Why does (0 < 5 < 3) return true?
...hon is the only language I know of that treats this syntax as ((0 &lt; 5) &amp;&amp; (5 &lt; 3)), there are probably others but I don't know of them.
– Alan Geleynse
Nov 3 '10 at 16:39
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When to use the brace-enclosed initializer?
...d, but describe the intended value/state of the object, use parentheses. Examples are the size argument of a vector or the file name argument of an fstream.
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Mercurial — revert back to old version and continue from there
I'm using Mercurial locally for a project (it's the only repo there's no pushing/pulling to/from anywhere else).
7 Answers
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cannot load such file — zlib even after using rvm pkg install zlib
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rvm pkg install openssl &amp;&amp; rvm pkg install zlib &amp;&amp; rvm pkg install libyaml &amp;&amp;
rvm pkg install iconv
rvm install 1.9.3-p0 --with-opt-dir=$HOME/.rvm/usr \
--with-libxml2-dir=/usr/local/Cellar/libxml2/2.7.8 \
--with-readlin...