大约有 2,317 项符合查询结果（耗时：0.0320秒） [XML]
String literals and escape characters in postgresql
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Note that on PostgreSQL 9.0 E'testing\\x20double-slash' will evaluate as 'testing\\x20double-slash', so only single-slash approach works for E'string' style literals
– Alexander
Aug 14 '12 at 14:02
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How to use double or single brackets, parentheses, curly braces
... regular expression matching operator =~.
Also, in a simple test, double square brackets seem to evaluate quite a lot quicker than single ones.
$ time for ((i=0; i<10000000; i++)); do [[ "$i" = 1000 ]]; done
real 0m24.548s
user 0m24.337s
sys 0m0.036s
$ time for ((i=0; i<10000000; i++)...
Purpose of ESI & EDI registers?
...hat matches some search criterion (I'm not sure if it's only searching on equality, or what – you can look it up :) )
That's most of what those regs are for.
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When to use reinterpret_cast?
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This does not actually answer the question of "when to use reinterpret_cast".
– einpoklum
Apr 15 '16 at 17:56
7
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With arrays, why is it the case that a[5] == 5[a]?
...s the same as *(a + 5), and from elementary school math we know those are equal (addition is commutative).
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URL Encode a string in jQuery for an AJAX request
...ing Google's Instant Search in my application. I'd like to fire off HTTP requests as the user types in the text input. The only problem I'm having is that when the user gets to a space in between first and last names, the space is not encoded as a + , thus breaking the search. How can I either repl...
Send string to stdin
...eky:
0000000: 0000 0000 bef9 0e3c 59f8 8e3c 0a71 d63c .......<Y..<.q.<
0000010: c6f2 0e3d 3eaa 323d 3a5e 563d 090e 7a3d ...=>.2=:^V=..z=
0000020: 7bdc 8e3d 2aaf a03d b67e b23d c74a c43d {..=*..=.~.=.J.=
0000030: 0513 d63d 16d7 e73d a296 f93d a8a8 053e ...=...=...=...>
0000040: 65...
Spring @PostConstruct vs. init-method attribute
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@Donal Quite true . Was just providing info on how this works.
– Aravind A
Dec 15 '11 at 11:32
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What is meant by “managed” vs “unmanaged” resources in .NET?
...it's recommended you write your code thusly:
using (var connection = new SqlConnection("connection_string_here"))
{
// Code to use connection here
}
As this ensures that .Dispose() is called on the connection object, ensuring that any unmanaged resources are cleaned up.
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Why use static_cast(x) instead of (int)x?
...ometimes you do know that a pointer points to a given subtype, by means opaque to the compiler, and a static_cast is faster. In at least some environments, dynamic_cast requires optional compiler support and runtime cost (enabling RTTI), and you might not want to enable it just for a couple of check...