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Does Python have a ternary conditional operator?

...s ignored, or else when b is evaluated and returned but a is ignored. This allows short-circuiting because when condition is true only a is evaluated and b is not evaluated at all, but when condition is false only b is evaluated and a is not evaluated at all. For example: >>> 'true' if True...
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Difference between null and empty (“”) Java String

... String(""); System.out.println(a==b); That would output false because I allocated two different objects, and a and b point to different objects. However, a.equals(b) in this case would return true, because equals for Strings will return true if and only if the argument String is not null and rep...
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How to check if mod_rewrite is enabled in php?

...ng mod_php, you can use apache_get_modules(). This will return an array of all enabled modules, so to check if mod_rewrite is enabled, you could simply do in_array('mod_rewrite', apache_get_modules()); Unfortunately, you're most likely trying to do this with CGI, which makes it a little bit more ...
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Append value to empty vector in R?

... avoided". As BrodieG mentioned in the comments: it is much better to pre-allocate a vector of the desired length, then set the element values in the loop. Here are several ways to append values to a vector. All of them are discouraged. Appending to a vector in a loop # one way for (i in 1:le...
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How do you get a string to a character array in JavaScript?

... DO NOT USE THIS METHOD, IT'S NOT UNICODE SAFE – i336_ Feb 5 '16 at 4:22 3 ...
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How to remove the lines which appear on file B from another file A?

...contents in file1 not in file2, to file3. And then mv file3 file1 would finally clear redundant contents in file1. – Spectral Jul 17 '14 at 20:48 ...
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Why does dividing two int not yield the right value when assigned to double?

... to explicitly convert both a and b to double simply for clarity, but it really doesn't matter. – John Dibling Sep 27 '11 at 15:31 ...
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How do I find the .NET version?

How do I find out which version of .NET is installed? 19 Answers 19 ...
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Checkout subdirectories in Git?

...lace outside of the working copy) that I got used to just making lots of small single-purpose repositories. If you insist (or really need it), though, you could make a git repository with just mytheme and myplugins directories and symlink those from within the WordPress install. MDCore wrote: ...
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Remove all classes that begin with a certain string

... know which class from the group is on the div. I want to be able to clear all classes with a given prefix and then add a new one. If I want to remove all of the classes that begin with "bg", how do I do that? Something like this, but that actually works: ...