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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 read XML using XPath in Java
...
If you have a xml like below
<e:Envelope
xmlns:d = "http://www.w3.org/2001/XMLSchema"
xmlns:e = "http://schemas.xmlsoap.org/soap/envelope/"
xmlns:wn0 = "http://systinet.com/xsd/SchemaTypes/"
xmlns:i = "http://www.w3.org/2001/XMLSchema-instance">
<e:Header>
...
How can I get the sha1 hash of a string in node.js?
...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...
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...
Is it possible in Java to access private fields via reflection [duplicate]
...
YishaiYishai
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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...
PHP Difference between array() and []
...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...
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...
Is there a standard sign function (signum, sgn) in C/C++?
... template <class T>
inline int sign (const T& z);
http://www.boost.org/doc/libs/1_47_0/libs/math/doc/sf_and_dist/html/math_toolkit/utils/sign_functions.html
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How to update a pull request from forked repo?
...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...