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Can you split a stream into two streams?
...ldn't create two producers of the original stream, I could see this being handled by a collector that provides two streams.
– Brett Ryan
Feb 12 '14 at 7:24
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How do I write a bash script to restart a process if it dies?
I have a python script that'll be checking a queue and performing an action on each item:
8 Answers
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How do I get current date/time on the Windows command line in a suitable format for usage in a file/
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On my system %TIME% returns values like " 0:01:15" and " 3:15:12" and the %%a%%b code in the answer gives a leading space like " 001" and " 315". To get a four digit hhmm use this: For /f "tokens=1-2 delims=/: " %%a in ("%TIME%") do (if %%a LSS 10 (set mytime=0%%a%%b) else (s...
How do I use itertools.groupby()?
I haven't been able to find an understandable explanation of how to actually use Python's itertools.groupby() function. What I'm trying to do is this:
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Git - deleted some files locally, how do I get them from a remote repository
...e HEAD~n, or simply fire up gitk, find the SHA1 of the appropriate commit, and paste it in.
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How can I see the entire HTTP request that's being sent by my Python application?
... PayPal's API over HTTPS. Unfortunately, I'm getting an error from PayPal, and PayPal support cannot figure out what the error is or what's causing it. They want me to "Please provide the entire request, headers included".
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How I can delete in VIM all text from current line to end of file?
...ay be better off reading the first few lines with head rather than editing and saving the file.
head hugefile > firstlines
(If you are on Windows you can use the Win32 port of head)
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C++ wait for user input [duplicate]
... covers this in some depth, with solutions for Windows, Unix-like systems, and even MS-DOS and VMS.
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Is there an upside down caret character?
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There's ▲: ▲ and ▼: ▼
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Removing duplicates from a list of lists
...pby(k))
[[1, 2], [3], [4], [5, 6, 2]]
itertools often offers the fastest and most powerful solutions to this kind of problems, and is well worth getting intimately familiar with!-)
Edit: as I mention in a comment, normal optimization efforts are focused on large inputs (the big-O approach) becaus...