大约有 36,010 项符合查询结果（耗时：0.0353秒） [XML]
How do I combine two data-frames based on two columns? [duplicate]
... and its friends to combine dataframes, and merge as well, but so far I don't know how to merge two dataframes with multiple columns based on 2 columns?
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How do I create a new Git branch from an old commit? [duplicate]
... answered Aug 23 '11 at 21:16
bdonlanbdonlan
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How do I set up curl to permanently use a proxy? [closed]
... is to use (maybe the better solution) the ~/.curlrc file (create it if it does not exist) :
proxy = <proxy_host>:<proxy_port>
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Checking whether a string starts with XXXX
...ered it for your specific question.
However, more generally, what you are doing with
if [[ "$string" =~ ^hello ]]
is a regex match. To do the same in Python, you would do:
import re
if re.match(r'^hello', somestring):
# do stuff
Obviously, in this case, somestring.startswith('hello') is b...
How to stop Flask from initialising twice in Debug Mode? [duplicate]
...initialisation loads caches and the like, this can take a while. Having to do this twice is annoying when in development (debug) mode. When debug is off, the Flask service only initialises once.
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How do I get epoch time in C#? [duplicate]
I'm trying to figure out how to get the epoch time in C#. Similar to the timestamps given on this website: http://www.epochconverter.com/
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How do I exit the results of 'git diff' in Git Bash on windows? [duplicate]
I'm using Git Bash on Windows 7. When I run git diff , I see this:
3 Answers
3
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git how to disable push [duplicate]
I am using git and I am doing my development work, which I don't want to push, even by mistake. Is there a method to disable push in certain local repository. One method is to rename the branch, another is to undo push if one does it by mistake, but I hope there should be a more direct method.
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“while :” vs. “while true” [duplicate]
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from manual:
: [arguments]
No effect; the command does nothing beyond expanding arguments and performing any specified
redirections. A zero exit code is returned.
As this returns always zero therefore is is similar to be used as true
Check out this answer: ...
How do I turn off the output from tar commands on Unix? [closed]
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Just drop the option v.
-v is for verbose. If you don't use it then it won't display:
tar -zxf tmp.tar.gz -C ~/tmp1
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