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What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
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How to strip HTML tags from string in JavaScript? [duplicate]
...familiar with PHP but also doing a little JavaScript every now and then):
http://phpjs.org/functions/strip_tags:535
It seemed to be the only piece of JavaScript code which successfully dealt with all the different kinds of input I stuffed into my application. That is, without breaking it – see m...
list.clear() vs list = new ArrayList(); [duplicate]
...d the average size is lower, it might be faster to make a new ArrayList.
http://www.docjar.com/html/api/java/util/ArrayList.java.html
public void clear() {
modCount++;
// Let gc do its work
for (int i = 0; i < size; i++)
elementData[i] = null;
size = 0;
}
...
Difference between Big-O and Little-O Notation
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Can anyone explain this strange behavior with signed floats in C#?
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I found the answer at http://blogs.msdn.com/xiangfan/archive/2008/09/01/magic-behind-valuetype-equals.aspx.
The core piece is the source comment on CanCompareBits, which ValueType.Equals uses to determine whether to use memcmp-style comparison:
...
Why is SSE scalar sqrt(x) slower than rsqrt(x) * x?
...rence might lie in how sqrt and rsqrt are computed. You can read more here http://www.intel.com/products/processor/manuals/. I'd suggest to start from reading about processor functions you are using, there are some info, especially about rsqrt (cpu is using internal lookup table with huge approximat...
How to find an available port?
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If you use Spring you may try http://docs.spring.io/spring/docs/4.0.5.RELEASE/javadoc-api/org/springframework/util/SocketUtils.html#findAvailableTcpPort--
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
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Various ways to remove local Git changes
..."upstream" of this branch, simply run
git reset --hard @{u}
Reference: http://sethrobertson.github.io/GitFixUm/fixup.html
or do git reset --hard origin/master [if local branch is master]
# Revert a commit already pushed to a remote repository?
$ git revert ab12cd15
#Delete a previous commit...
Algorithm to detect overlapping periods [duplicate]
...
There is a wonderful library with good reviews on CodeProject: http://www.codeproject.com/Articles/168662/Time-Period-Library-for-NET
That library does a lot of work concerning overlap, intersecting them, etc. It's too big to copy/paste all of it, but I'll see which specific parts which...