大约有 40,000 项符合查询结果（耗时：0.0522秒） [XML]
Join strings with a delimiter only if strings are not null or empty
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community wiki
5 revs, 2 users 98%georg
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How can bcrypt have built-in salts?
...e key derivation function are used (which is not enough, by the way. I'd recommend a cost of 12 or more.)
vI8aWBnW3fID.ZQ4/zo1G.q1lRps.9cGLcZEiGDMVr5yUP1KUOYTa is the salt and the cipher text, concatenated and encoded in a modified Base-64. The first 22 characters decode to a 16-byte value for the s...
What is the purpose of the EBP frame pointer register?
...eginner in assembly language and have noticed that the x86 code emitted by compilers usually keeps the frame pointer around even in release/optimized mode when it could use the EBP register for something else.
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Converting an integer to a hexadecimal string in Ruby
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What is the difference between the remap, noremap, nnoremap and vnoremap mapping commands in Vim?
...fference between the remap , noremap , nnoremap and vnoremap mapping commands in Vim?
3 Answers
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Does it make any sense to use inline keyword with templates?
Since templates are defined within headers and compiler is able to determine if inlining a function is advantageous, does it make any sense? I've heard that modern compilers know better when to inline a function and are ignoring inline hint.
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MySQL Query - Records between Today and Last 30 Days
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56
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JavaScript - cannot set property of undefined
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If you're in an environment that supports ES2015 features, you can use computed property names:
d = {
[a]: {
greetings: b,
data: c
}
};
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Match multiline text using regular expression
...e matched.
So if you're simply looking for a string that starts with User Comments:, use the regex
^\s*User Comments:\s*(.*)
with the Pattern.DOTALL option:
Pattern regex = Pattern.compile("^\\s*User Comments:\\s+(.*)", Pattern.DOTALL);
Matcher regexMatcher = regex.matcher(subjectString);
if (r...
Calculate total seconds in PHP DateInterval
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Could you not compare the time stamps instead?
$now = new DateTime('now');
$diff = $date->getTimestamp() - $now->getTimestamp()
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