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How do MySQL indexes work?
...so create an integer field called url_hash and use a hash function like CRC32 or any other hash function to hash the url when inserting it. And then, when you need to query for this value, you can do something like this:
SELECT url FROM url_table WHERE url_hash=CRC32("http://gnu.org");
The proble...
How do I do an OR filter in a Django query?
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answered Apr 11 '09 at 9:32
Alex KoshelevAlex Koshelev
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How to capture the browser window close event?
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karim79karim79
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C/C++ check if one bit is set in, i.e. int variable
... "have" to do it this way. But I usually write:
/* Return type (8/16/32/64 int size) is specified by argument size. */
template<class TYPE> inline TYPE BIT(const TYPE & x)
{ return TYPE(1) << x; }
template<class TYPE> inline bool IsBitSet(const TYPE & x, const TYPE &...
The input is not a valid Base-64 string as it contains a non-base 64 character
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We can remove unnecessary string input in front of the value.
string convert = hdnImage.Replac...
PHP: How to generate a random, unique, alphanumeric string for use in a secret link?
...: http://us1.php.net/manual/en/function.openssl-random-pseudo-bytes.php#104322
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Subtract days from a date in JavaScript
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How to get the number of characters in a std::string?
...u can handle rolling your own strlen as well. For wstring, u16string and u32string, it returns the number of characters, rather than bytes. (Again with the proviso that if you are using a variable-length encoding in any of those, you're going to have to roll your own strlen).
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Convert a binary NodeJS Buffer to JavaScript ArrayBuffer
...ing integers when possible using DataView. Until size&0xfffffffe, copy 32-bit integers, then, if there's 1 byte remaining, copy 8-bit integer, if 2 bytes, copy 16-bit integer, and if 3 bytes, copy 16-bit and 8-bit integer.
– Triang3l
Feb 13 '13 at 17:25
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Can someone explain the dollar sign in Javascript?
...ction(){}.
– F-3000
Dec 7 '13 at 12:32
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Thimmayya your comment "By default, jQuery uses "$" as ...