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Secure hash and salt for PHP passwords
It is currently said that MD5 is partially unsafe. Taking this into consideration, I'd like to know which mechanism to use for password protection.
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How could the UNIX sort command sort a very large file?
...link goes into more details, but in essence it divides the input up into smaller portions (that fit into memory) and then merges each portion together at the end.
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MySQL vs PostgreSQL for Web Applications [closed]
...on factor is, "which is faster?" Then the answer is "it depends. If it really matters, test your application against both." And if you really, really care, you get in two DBAs (one who specializes in each database) and get them to tune the crap out of the databases, and then choose. It's astonis...
What is the string length of a GUID?
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Note: 36 is the string length with the dashes in between. They are actually 16-byte numbers.
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Remove element of a regular array
...n foos.ToArray();
You could try this extension method that I haven't actually tested:
public static T[] RemoveAt<T>(this T[] source, int index)
{
T[] dest = new T[source.Length - 1];
if( index > 0 )
Array.Copy(source, 0, dest, 0, index);
if( index < source.Length ...
Why is my program slow when looping over exactly 8192 elements?
...much slower than transposing a matrix of 513x513?
Matrix multiplication: Small difference in matrix size, large difference in timings
But that's only because there's one other problem with the code.
Starting from the original loop:
for(i=1;i<SIZE-1;i++)
for(j=1;j<SIZE-1;j++) {
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What MySQL data type should be used for Latitude/Longitude with 8 decimal places?
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Additionally, you will see that float values are rounded.
// e.g: given values 41.0473112,29.0077011
float(11,7) | decimal(11,7)
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41.0473099 | 41.0473112
29.0077019 | 29.0077011
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Iterating through a Collection, avoiding ConcurrentModificationException when removing objects in a
We all know you can't do the following because of ConcurrentModificationException :
26 Answers
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Changing one character in a string
...t;assign->free" more efficent than s[6]='W'? Hmm... Why other languages allow it, in spite of that "lot" of reasons? Interesting how a strange design can be defended (for love I suppose). Why not suggest adding a function MID(strVar,index,newChar) to Python core that direct accesses the char memo...
Receiver not registered exception error?
...he code that you didn't include in this post) or was not registered, then call to unregisterReceiver throws IllegalArgumentException. In your case you need to just put special try/catch for this exception and ignore it (assuming you can't or don't want to control number of times you call unregisterR...