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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;
}
...
How to clear APC cache entries?
...'], $apcPaths['web']); //'data' is a non web accessable directory
$url = 'http://localhost/apc_clear.php'; //use domain name as necessary
$result = json_decode(file_get_contents($url));
if (isset($result['success']) && $result['success'])
{
//handle success
}
else
{
//handle failure
}
...
What is the difference between “#!/usr/bin/env bash” and “#!/usr/bin/bash”?
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Can anyone explain this strange behavior with signed floats in C#?
...
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:
...
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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Difference between Big-O and Little-O Notation
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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...
Algorithm to detect overlapping periods [duplicate]
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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...
What is the Swift equivalent of isEqualToString in Objective-C?
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Is calculating an MD5 hash less CPU intensive than SHA family functions?
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