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Array vs. Object efficiency in JavaScript
...s that
– Charles Byrne
Jul 1 '14 at 12:39
1
See http://jsperf.com/array-vs-object-performance/71....
Git, How to reset origin/master to a commit?
...e push your local changes to master:
git checkout master
git reset --hard e3f1e37
git push --force origin master
# Then to prove it (it won't print any diff)
git diff master..origin/master
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...
How to convert integer timestamp to Python datetime
...0000
>>> date = datetime.datetime.fromtimestamp(your_timestamp / 1e3)
and the result is:
>>> date
datetime.datetime(2012, 3, 16, 1, 0)
Does it answer your question?
EDIT: J.F. Sebastian correctly suggested to use true division by 1e3 (float 1000). The difference is significan...
Can two different strings generate the same MD5 hash code?
...t looking at the SHA-2 series of hash functions (SHA-256, SHA-384 and SHA-512). The downside is that it's slightly slower and has longer hash output.
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How do I create an array of strings in C?
... |
edited Jan 23 '13 at 12:53
answered Jul 6 '09 at 18:54
...
Efficiently replace all accented characters in a string?
...F\uFF2A\u0134\u0248]/g},
{'base':'K', 'letters':/[\u004B\u24C0\uFF2B\u1E30\u01E8\u1E32\u0136\u1E34\u0198\u2C69\uA740\uA742\uA744\uA7A2]/g},
{'base':'L', 'letters':/[\u004C\u24C1\uFF2C\u013F\u0139\u013D\u1E36\u1E38\u013B\u1E3C\u1E3A\u0141\u023D\u2C62\u2C60\uA748\uA746\uA780]/g},
{'base':'...
Convert data.frame column to a vector?
...ame(a1=c1:5, a2=6:10, a3=11:15)
R> aframe
a1 a2 a3
1 1 6 11
2 2 7 12
3 3 8 13
4 4 9 14
5 5 10 15
R> avector <- aframe[, "a2"]
R> avector
[1] 6 7 8 9 10
R> avector <- aframe[, "a2", drop=FALSE]
R> avector
a2
1 6
2 7
3 8
4 9
5 10
R>
...
How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
...ray(std::string("Cat3"), std::string("Dog3")), make_array(std::string("Mouse3"), std::string("Rat3"))),
make_array(make_array(std::string("Cat4"), std::string("Dog4")), make_array(std::string("Mouse4"), std::string("Rat4")))
);
std::cout << q << s...
一分钟明白 VS manifest 原理 - C/C++ - 清泛网 - 专注C/C++及内核技术
...t.VC80.DebugCRT" processorArchitecture="ia64" publicKeyToken="1fc8b3b9a1e18e3b"/>
<bindingRedirect oldVersion="8.0.41204.256-8.0.50608.0" newVersion="8.0.50727.42"/>
</dependentAssembly>
指明"8.0.41204.256-8.0.50608.0"都被定向到8.0.50727.42。这是assembly提供商如MS对低级版本bug...
Homebrew install specific version of formula?
... git checkout ae59e09 Library/Formula/postgresql.rb
9.2.4 git checkout e3ac215 Library/Formula/postgresql.rb
9.2.3 git checkout c80b37c Library/Formula/postgresql.rb
9.2.2 git checkout 9076baa Library/Formula/postgresql.rb
9.2.1 git checkout 5825f62 Library/Formula/postgresql.rb
9.2.0 ...