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How to use base class's constructors and assignment operator in C++?
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Multiple cases in switch statement
... Brian R. BondyBrian R. Bondy
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Extract first item of each sublist
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alecxealecxe
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MySQL error: key specification without a key length
I have a table with a primary key that is a varchar(255). Some cases have arisen where 255 characters isn't enough. I tried changing the field to a text, but I get the following error:
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Position of least significant bit that is set
...plyDeBruijnBitPosition[32] =
{
0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
31, 27, 13, 23, 21, 19, 16, 7, 26, 12, 18, 6, 11, 5, 10, 9
};
r = MultiplyDeBruijnBitPosition[((uint32_t)((v & -v) * 0x077CB531U)) >> 27];
Helpful references:
"Using de Bruijn Sequences to In...
Get index of array element faster than O(n)
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answered Jun 5 '11 at 10:41
sawasawa
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Best database field type for a URL
... web browsers: 2,083 (Internet Explorer)
http://dev.mysql.com/doc/refman/5.0/en/char.html
Values in VARCHAR columns are variable-length strings. The length can be specified as a value from 0 to 255 before MySQL 5.0.3, and 0 to 65,535 in 5.0.3 and later versions. The effective maximum length of a...
REST API Token-based Authentication
...ave chosen to use HTTP "Basic" Authorization scheme. - check out version 1.5 or above of that REST API document, and search for authorization in the document.
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Variable declared in for-loop is local variable?
... of a local variable declared in a local-variable-declaration
(Section 8.5.1) is the block in which the declaration occurs.
and
The scope of a local variable declared in a for-initializer of a for
statement (Section 8.8.3) is the for-initializer, the for-condition,
the for-iterator, and ...