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Why is reading lines from stdin much slower in C++ than Python?
... 5' --
$ /usr/bin/time cat temp_big_file | wc -l
0.01user 1.34system 0:01.83elapsed 74%CPU ...
-- this claims that cat consumed 74% of the CPU during the test; and indeed 1.34/1.83 is approximately 74%. Perhaps a run of:
$ /usr/bin/time wc -l < temp_big_file
would have taken only the remai...
How to stage only part of a new file with git?
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Python loop counter in a for loop [duplicate]
...oin(str(i)+str(s[i]) for i in xrange(len(s)))". Each of them averaged on 8.83 usec per loop over 100,000 loops. Other tests (too long for a comment) showed very slight (~2%) speed increases for xrange(len(s)) if it only needed to access the element on every 16 iterations.
– Art...
SQL Server: Get data for only the past year
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The following adds -1 years to the current date:
SELECT ... From ... WHERE date > DATEADD(year,-1,GETDATE())
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How to change time in DateTime?
... me to start the Noda Time project, which is now production-ready. Its ZonedDateTime type is made "aware" by linking it to a tz database entry.
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Javascript - How to detect if document has loaded (IE 7/Firefox 3)
...stener("DOMContentLoaded", init, false);
}
/* for Internet Explorer */
/*@cc_on @*/
/*@if (@_win32)
document.write("<script id=__ie_onload defer src=javascript:void(0)><\/script>");
var script = document.getElementById("__ie_onload");
script.onreadystatechange = function() {
i...
LR性能测试结果样例分析 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...指标的曲线逗较为平滑，三者的平均值分别为：53.582%、83.456M、8.45，而测试服务器总的物理内存为384M，那么内存使用率为（384-83.456）/384=78.26%，根据本次性能测试要求的：CPU使用率不超过75%，物理内存使用率不超过70%这两点来...
AssertContains on strings in jUnit
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程序员之网络安全系列（二）：如何安全保存用户密码及哈希算法 - 更多技术 ...
... Digest::MD5.hexdigest('I dont love you安红我爱你')
dce67bcdfdf007445dd4a2c2dc3d29c1
=> nil
2.2.3 :006 >
如此一来，因为攻击者很难猜到“安红我爱你”，那么自然彩虹表里是没有的，当然我建议你在实际项目中不要使用”安红我爱你”，你应...
Linux bash: Multiple variable assignment
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...