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Shell command to sum integers, one per line?
I am looking for a command that will accept (as input) multiple lines of text, each line containing a single integer, and output the sum of these integers.
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How do I check if a file exists in Java?
... file and was thus answered using FileWriter which is obviously not applicable here.
17 Answers
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How can I call a custom Django manage.py command directly from a test driver?
...and write test without additional requirements.
But if you by some reason cannot decouple logic form command you can call it from any code using call_command method like this:
from django.core.management import call_command
call_command('my_command', 'foo', bar='baz')
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Python append() vs. + operator on lists, why do these give different results?
Why do these two operations ( append() resp. + ) give different results?
7 Answers
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Visual Studio Expand/Collapse keyboard shortcuts [duplicate]
In Visual Studio, if I have a code file open, I can press CTRL + M or CTRL + M + O to collapse all code blocks, regions, namespaces, etc.
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Detect if stdin is a terminal or pipe?
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+1: stdin can be a pipe or redirected from a file. Better to check if it is interactive than to check if it is not.
– John Kugelman
Aug 21 '09 at 16:33
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Can I do a partial revert in GIT
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You can revert the commit without creating a new one by adding the '--no-commit' option. This leaves all the reverted files in the staging area. From there, I'd perform a soft reset and add in the changes I really wanted. For an ...
How to install a node.js module without using npm?
...'s github page but are not published with the npm-registry. These modules can't be installed using npm.
5 Answers
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How to pass a user defined argument in scrapy spider
I am trying to pass a user defined argument to a scrapy's spider. Can anyone suggest on how to do that?
5 Answers
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Simple way to create matrix of random numbers
I am trying to create a matrix of random numbers, but my solution is too long and looks ugly
13 Answers
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