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How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
How to wait in a bash script for several subprocesses spawned from that script to finish and return exit code !=0 when any of the subprocesses ends with code !=0 ?
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Check whether a string contains a substring
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It will return the position of the first occurrence of $substr in $str, or -1 if the substring is not found.
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Difference between adjustResize and adjustPan in android?
...ifference between them and when to use each component? Which one(adjustPan or adjustResize) is good for resizing UI?
5 Ans...
Why should I prefer single 'await Task.WhenAll' over multiple awaits?
In case I do not care about the order of task completion and just need them all to complete, should I still use await Task.WhenAll instead of multiple await ? e.g, is DoWork2 below a preferred method to DoWork1 (and why?):
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How to list all installed packages and their versions in Python?
... can simply call this:
pip freeze
It will also include version numbers for the installed packages.
Update
pip has been updated to also produce the same output as pip freeze by calling:
pip list
Note
The output from pip list is formatted differently, so if you have some shell script that par...
Error: Configuration with name 'default' not found in Android Studio
I am using the volley library to perform network operation in android. So I am trying to add this library in my project which is created in Android Studio and gradle system.
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How to use '-prune' option of 'find' in sh?
... It alters the "to-do" list, but always returns true.
The general pattern for using -prune is this:
find [path] [conditions to prune] -prune -o \
[your usual conditions] [actions to perform]
You pretty much always want the -o (logical OR) immediately after -prune, because that first par...
Set margin size when converting from Markdown to PDF with pandoc
... Next, I used pandoc to convert the .md file into a PDF file (I get an error if I try and convert from the .html file). However, the PDF that is produced have massive margins (like this http://johnmacfarlane.net/pandoc/demo/example13.pdf ). How can I get pandoc to produce something with smaller ...
What are commit-ish and tree-ish in Git?
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The Short Answer (TL;DR)
Here's a complete list of commit-ish and tree-ish identifiers (from the Git
revisions documentation):
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| Commit-ish/Tree-ish | ...
How to get a reference to current module's attributes in Python
...This is always the dictionary
of the current module (inside a
function or method, this is the module
where it is defined, not the module
from which it is called).
http://docs.python.org/library/functions.html#globals
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