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Tetris-ing an array
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I think that if you are careful then my solution is more efficient than building a trie.
– starblue
Jul 24 '10 at 19:50
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Javascript calculate the day of the year (1 - 366)
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Maybe use .setUTCHours and Date.UTC() for a more reliable solution.
– Noyo
Oct 13 '14 at 14:03
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Why should hash functions use a prime number modulus?
...sume that the others have followed the same rule.
[Edit: there's another, more specialized reason to use a prime number of buckets, which is if you handle collisions with linear probing. Then you calculate a stride from the hashcode, and if that stride comes out to be a factor of the bucket count t...
MySQL: Fastest way to count number of rows
...f you need the data anyway and only want a count for pagination/etc. it is more efficient to get the data then count the rows in your program.
– Tyzoid
Aug 1 '13 at 20:16
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What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
...way. Some are easier to access than others. Easier means less-computation, more direct, which results in faster access. Now uint32_t is exactly 32-bit on all systems (if it exists), which might not be faster compared to the one which has, say, 64-bit. uint_fast32_t on the other hand at least 32 bi...
Is log(n!) = Θ(n·log(n))?
... @Keith: I don't get it yet. Could you (or someone) expand a few more terms for me in the "..." part of "log(n/2) + ... + log(n)" please? Thanks!
– j_random_hacker
Jan 21 '10 at 9:31
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Styling input buttons for iPad and iPhone
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PHP/MySQL insert row then get 'id'
... use the internal MySQL SQL function LAST_INSERT_ID() in an SQL query. For more information about PHP's maximum integer values, please see the integer documentation.\
– Elbek
Jul 20 '13 at 8:51
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How to recursively find and list the latest modified files in a directory with subdirectories and ti
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How to send an email using PHP?
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