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java.util.regex - importance of Pattern.compile()?
What is the importance of Pattern.compile() method?
Why do I need to compile the regex string before getting the Matcher object?
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Why does document.querySelectorAll return a StaticNodeList rather than a real Array?
...elements, because they don't want to stymie some poor little language that comes along that wants to implement getElementsByFoo() but cannot support operator overloading. It's a prevalent philosophy present throughout much of the spec.
John Resig has voiced a similar option as yours, to which he ad...
What order are the Junit @Before/@After called?
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How do I test if a variable is a number in Bash?
...ular expression has to be saved in a variable, but if it's for the sake of compatibility I don't think it's necessary. You could just apply the expression directly: [[ $yournumber =~ ^[0-9]+$ ]].
– konsolebox
Aug 31 '13 at 21:48
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Hidden Features of C#? [closed]
... isn't C# per se, but I haven't seen anyone who really uses System.IO.Path.Combine() to the extent that they should. In fact, the whole Path class is really useful, but no one uses it!
I'm willing to bet that every production app has the following code, even though it shouldn't:
string path = dir ...
Why would a static nested interface be used in Java?
...ically "static") and can be removed with no effect on semantics; I would recommend it be removed. The same goes for "public" on interface methods and "public final" on interface fields - the modifiers are redundant and just add clutter to the source code.
Either way, the developer is simply declari...
How to set breakpoints in inline Javascript in Google Chrome?
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Why does integer overflow on x86 with GCC cause an infinite loop?
...gers usually wrap the way you expect. This is one of those exceptions. The compiler assumes you won't cause undefined behavior, and optimizes away the loop test. If you really want wraparound, pass -fwrapv to g++ or gcc when compiling; this gives you well-defined (twos-complement) overflow semantics...
How to hide action bar before activity is created, and then show it again?
I need to implement splash screen in my honeycomb app.
I use this code in activity's onCreate to show splash:
27 Answers
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Is it possible to use argsort in descending order?
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If you negate an array, the lowest elements become the highest elements and vice-versa. Therefore, the indices of the n highest elements are:
(-avgDists).argsort()[:n]
Another way to reason about this, as mentioned in the comments, is to observe that the big elements...