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Extract subset of key-value pairs from Python dictionary object?
...t in the original one, you can use the fact to view objects implement some set operations:
{k: bigdict[k] for k in bigdict.keys() & {'l', 'm', 'n'}}
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open() in Python does not create a file if it doesn't exist
...s a new file for
reading and writing. -Python file modes
seek() method sets the file's current position.
f.seek(pos [, (0|1|2)])
pos .. position of the r/w pointer
[] .. optionally
() .. one of ->
0 .. absolute position
1 .. relative position to current
2 .. relative position from end
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Convert char to int in C and C++
...racter '1' provides a ascii number that's not 1, you need to remove the offset '0' to realign it to count from 0-9. The consecutive numbers 1-9 are adjacent in the ascii integer number.
– krisdestruction
Oct 9 '15 at 17:36
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Changing git commit message after push (given that no one pulled from remote)
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If you don't specify the branch explicitly, Git will use the default push settings. If your default push setting is "matching", then you may destroy changes on several branches at the same time.
Pulling / fetching afterwards
Anyone who already pulled will now get an error message, and they wil...
Change EOL on multiple files in one go
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that works on a file basis, cannot be applied to a whole set of files.
– fduff
Jul 5 '12 at 9:50
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Running multiple commands with xargs
...alues added by xargs become $1 and onward, which happens to be the default set of values a for loop iterates over.
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Simple example of threading in C++
...oblem with boost::thread is that as I recall you don't have the freedom to set the stack size of the new thread -- a feature that is also lamentably not included in c++0x standard.
– Edward KMETT
Nov 5 '08 at 20:13
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Revert to a commit by a SHA hash in Git? [duplicate]
I'm not clear on how git revert works. For example, I want to revert to a commit six commits behind the head, reverting all the changes in the intermediary commits in between.
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Remove leading and trailing spaces?
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Applying function with multiple arguments to create a new pandas column
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