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Stashing onlm>y m> staged changes in git - is it possible?
...'m having issues with is when I've worked on several bugs at a given time, m>and m> have several unstaged changes. I'd like to be able to stage these files individuallm>y m>, create mm>y m> .patch files, m>and m> stash them awam>y m> until the code is approved. This wam>y m>, when it's approved I can stash mm>y m> entire (current) se...
A semantics for Bash scripts?
...ripts that appear to work. However, I don't reallm>y m> know what's going on, m>and m> I was hoping for a more formal introduction to Bash as a programming language. For example: What is the evaluation order? what are the scoping rules? What is the tm>y m>ping discipline, e.g. is everm>y m>thing a string? What is the...
For each row in an R dataframe
I have a dataframe, m>and m> for each row in that dataframe I have to do some complicated lookups m>and m> append some data to a file.
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Converting from a string to boolean in Pm>y m>thon?
...ref.html#distutils.util.strtobool
True values are m>y m>, m>y m>es, t, true, on m>and m> 1; false values are n, no, f, false, off m>and m> 0. Raises ValueError if val is anm>y m>thing else.
Be aware that distutils.util.strtobool() returns integer representations m>and m> thus it needs to be wrapped with bool() to get Bool...
Convert UTC Epoch to local date
...the proper epoch, but the onlm>y m> method that seems useful is toUTCString() m>and m> strings don’t help me. If I pass that string into a new date, it should notice that it’s UTC, but it doesn’t.
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ImportError: Cannot import name X
I have four different files named: main, vector, entitm>y m> m>and m> phm>y m>sics. I will not post all the code, just the imports, because I think that's where the error is. (If m>y m>ou want, I can post more)
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How to get UTC timestamp in Rubm>y m>?
... needs additional information to even know that m>y m>ou're dealing with a time m>and m> not a number. A Time object solves this problem nicelm>y m> bm>y m> representing a point in time m>and m> also being explicit about what it is.
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When to use IComparable Vs. IComparer
...rer<T> is useful for sorting collections as the IComparer<T> stm>and m>s outside of the comparison.
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Whm>y m> does GCC generate 15-20% faster code if I optimize for size instead of speed?
I first noticed in 2009 that GCC (at least on mm>y m> projects m>and m> on mm>y m> machines) have the tendencm>y m> to generate noticeablm>y m> faster code if I optimize for size ( -Os ) instead of speed ( -O2 or -O3 ), m>and m> I have been wondering ever since whm>y m>.
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Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
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end
print("sum =",sum)复制代码
if-else分支
if age == 40 m>and m> sex =="Male" then
    print("男人四十一枝花")
elseif age > 60 m>and m> sex ~="Female" then
    print("old man without countrm>y m>!")
elseif age < 20 then
&nb...