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Convert a Git folder to a submodule retrospectively?
...history locally so it's a good bit faster, after which if you want you can set up the helper command's .gitmodules file and such, and push the submodule histories themselves anywhere you want.
The stripped command itself is here, the doc's in the comments, in the unstripped one that follows. Run i...
Hidden features of Python [closed]
What are the lesser-known but useful features of the Python programming language?
191 Answers
...
git mv and only change case of directory
...y with an interactive rebase git rebase -i HEAD~2. Note: To simplify this, set the final message in your first commit and fixup the second one.
– Alex B.
Aug 21 '13 at 12:47
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John Carmack's Unusual Fast Inverse Square Root (Quake III)
...ge of the nature of 32-bit x86
processors, i, an integer, is
initially set to the value of the
floating point number you want to take
the inverse square of, using an
integer cast. i is then set to
0x5f3759df, minus itself shifted one
bit to the right. The right shift
drops the least ...
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Rolling back a remote Git repository
...sh as usual, keeping history unchanged.
Or you can "roll back" with git reset --hard HEAD~n. If you are pushing in a public or shared repository, you may diverge and break others work based on your original branch. Git will prevent you doing so, but you can use git push -f to force the update.
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How to append contents of multiple files into one file
...d in files, not directories, etc.
-name '*.txt'
Whittle down the result set by name
-exec cat {} +
Execute the cat command for each result. "+" means only 1 instance of cat is spawned (thx @gniourf_gniourf)
>> output.file
As explained in other answers, append the cat-ed contents to t...
Can I grep only the first n lines of a file?
I have very long log files, is it possible to ask grep to only search the first 10 lines?
12 Answers
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What does this square bracket and parenthesis bracket notation mean [first1,last1)?
...omment, you're right in a way that infinity is not a number, hence why the set [0, ∞) does not include it.
– wjandrea
Jul 28 '17 at 18:30
1
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Fastest way to check if a value exists in a list
...7 in a
Clearest and fastest way to do it.
You can also consider using a set, but constructing that set from your list may take more time than faster membership testing will save. The only way to be certain is to benchmark well. (this also depends on what operations you require)
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