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what is the difference between ?:, ?! and ?= in regex?
..."ab".
The difference between ?: and ?= is that ?= excludes the expression from the entire match while ?: just doesn't create a capturing group. So for example a(?:b) will match the "ab" in "abc", while a(?=b) will only match the "a" in "abc". a(b) would match the "ab" in "abc" and create a capture ...
Compelling examples of custom C++ allocators?
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@sellibitze: Since the vectors were being manipulated from within TBB tasks and reused across multiple parallel operations and there is no guarantee which TBB worker thread will pick up tasks, I conclude it works just fine. Although note that have been some historic issues with...
SVN how to resolve new tree conflicts when file is added on two branches
...der version (2009) of the "Tree Conflict" design document:
XFAIL conflict from merge of add over versioned file
This test does a merge which brings a file addition without history onto an
existing versioned file.
This should be a tree conflict on the file of the 'local obstruction, incoming add upo...
What does the “yield” keyword do?
... generator object, this is a bit tricky :-)
Then, your code will continue from where it left off each time for uses the generator.
Now the hard part:
The first time the for calls the generator object created from your function, it will run the code in your function from the beginning until it hit...
Docker and securing passwords
...ript as the ENTRYPOINT or CMD. The wrapper script can first import secrets from an outside location in to the container at run time, then execute the application, providing the secrets. The exact mechanics of this vary based on your run time environment. In AWS, you can use a combination of IAM role...
How to export revision history from mercurial or git to cvs?
I'm going to be working with other people on code from a project that uses cvs. We want to use a distributed vcs to make our work and when we finish or maybe every once in a while we want to commit our code and all of our revision history to cvs. We don't have write access to the project's cvs repo ...
Converting string into datetime
...ts of formats, with the format determined by a format string you give it:
from datetime import datetime
datetime_object = datetime.strptime('Jun 1 2005 1:33PM', '%b %d %Y %I:%M%p')
The resulting datetime object is timezone-naive.
Links:
Python documentation for strptime: Python 2, Python 3
P...
How to get the function name from within that function?
How can I access a function name from inside that function?
20 Answers
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How do you run multiple programs in parallel from a bash script?
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Another option is to use nohup to prevent the program from being killed when the shell hangs up.
– Philipp
Jul 24 '10 at 13:31
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What is the best (and safest) way to merge a Git branch into master?
A new branch from master is created, we call it test .
13 Answers
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