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How to find whether or not a variable is empty in Bash
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In Bash at least the following command tests if $var is empty:
if [[ -z "$var" ]]; then
# Do what you want
fi
The command man test is your friend.
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Delete first character of a string in Javascript
...hen === and == perform precisely the same steps (according to the spec, at least), so there is no reason to expect one to perform better than the other.
– Tim Down
Oct 28 '13 at 9:40
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convert a list of objects from one type to another using lambda expression
... a world with LINQ, it's more idiomatic to start with... but it's worth at least being aware of the ConvertAll option.
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When deleting remote git branch “error: unable to push to unqualified destination”
... of
git push origin :origin/my_remote_branch
This solved my problem at least, hope it would help others as well.
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How to run a single test from a rails test suite?
... This seems to be the best answer based on the Rails guides, at least for testing a specific line.
– tfantina
Oct 30 '17 at 10:51
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possibly undefined macro: AC_MSG_ERROR
...ibcurl4-openssl-dev
(i had libcurl allready installed )
worked for me at least..
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Do I need Content-Type: application/octet-stream for file download?
...cted "save link as" but not if they'd selected "save" while viewing (or at least IE used to be like that, it may have changed some years ago).
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javac error: Class names are only accepted if annotation processing is explicitly requested
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You at least need to add the .java extension to the file name in this line:
javac -cp /home/manish.yadav/Desktop/JCuda-All-0.3.2-bin-linux-x86_64 EnumDevices
From the official faq:
Class names, 'HelloWorldApp', are only accep...
How do I clone a generic List in Java?
... I believe this wouldn't work, from doc * The destination list must be at least as long as the source list. If it is longer, the remaining elements in the destination list are unaffected.
– Greg Domjan
Jul 26 '12 at 15:54
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Cannot import XSSF in Apache POI
...ooxml-3.17.jar
to your project, as that seems to make it work (for me at least)
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