大约有 44,000 项符合查询结果（耗时：0.0532秒） [XML]
What is a memory fence?
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answered Nov 13 '08 at 10:02
GwareddGwaredd
1,64711 gold badge1111 silver badges1212 bronze badges
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is_null($x) vs $x === null in PHP [duplicate]
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//checking with ===
$a = array();
$time = microtime(true);
for($i=0;$i<10000;$i++) {
if($a[$i] === null) {
//do nothing
}
}
echo 'Testing with === ', microtime(true) - $time, "\n";
//checking with is_null()
$time = microtime(true);
for($i=0;$i<10000;$i++) {
if(is_null($a...
Read url to string in few lines of java code
...next beginning.
– Rune
May 5 '13 at 10:00
7
Neat, but fails if the webpage returns no content (""...
Loop through all nested dictionary values?
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Antti Haapala
109k2121 gold badges223223 silver badges258258 bronze badges
answered May 25 '12 at 14:47
ScharronSch...
How do I keep Python print from adding newlines or spaces? [duplicate]
... Greg HewgillGreg Hewgill
783k167167 gold badges10841084 silver badges12221222 bronze badges
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Random number generation in C++11: how to generate, how does it work? [closed]
...have a simple random number generator that generate the numbers 0, 1, ..., 10 each with equal probability (think of this as the classic rand()). Now you want a random number in the range 0, 1, 2, each with equal probability. Your knee-jerk reaction would be to take rand() % 3. But wait, the remainde...
Django - how to create a file and save it to a model's FileField?
... pawas kr. singh
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answered Sep 22 '11 at 13:07
tawmastawmas
5,24522 gold badg...
Symfony 2: How do I check if a user is not logged in inside a template?
.../providers/…
– Ronan
Oct 1 '13 at 10:04
16
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Difference Between Cohesion and Coupling
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answered Jun 21 '10 at 14:17
maurismauris
38.4k1414 gold badges9191 silver badges128128 bronze badges
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Why is “import *” bad?
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answered Mar 5 '10 at 12:43
gruszczygruszczy
35.8k2626 gold badges113113 silver badges163163 bronze badges
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