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How to tell if a string is not defined in a Bash shell script
...{VAR+xxx}" = "xxx" ]; then echo VAR is set but empty; fi
You probably can combine the two tests on the second line into one with:
if [ -z "$VAR" -a "${VAR+xxx}" = "xxx" ]; then echo VAR is set but empty; fi
However, if you read the documentation for Autoconf, you'll find that they do not recommend...
Best branching strategy when doing continuous integration?
... We added support to Bamboo to do branch per task codicesoftware.blogspot.com/2012/02/…, and it seems their newest version will do it natively with several version controls, including dvcs.
– pablo
Apr 5 '12 at 17:38
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How to get the current time in milliseconds from C in Linux?
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Good solution but don't forget the -lm in your gcc command.
– David Guyon
Jun 2 '14 at 8:58
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PowerShell script to return versions of .NET Framework on a machine?
...y above.
# Get the text from github
$url = "https://raw.githubusercontent.com/dotnet/docs/master/docs/framework/migration-guide/how-to-determine-which-versions-are-installed.md"
$md = Invoke-WebRequest $url -UseBasicParsing
$OFS = "`n"
# Replace the weird text in the tables, and the padding
# Then ...
How to deal with persistent storage (e.g. databases) in Docker
...hello
docker run -d -v hello:/container/path/for/volume container_image my_command
This means that the data-only container pattern must be abandoned in favour of the new volumes.
Actually the volume API is only a better way to achieve what was the data-container pattern.
If you create a containe...
How can I make a JPA OneToOne relation lazy
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Change app language programmatically in Android
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It's possible. You can set the locale. However, I would not recommend that. We've tried it at early stages, it's basically fighting the system.
We have the same requirement for changing the language but decided to settle to the fact that UI should be same as phone UI. It was working via...
How to export a Vagrant virtual machine to transfer it
... file (or files) that can be copied to another PC, so there I can run some command to import the vagrant box.
7 Answers
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Use of def, val, and var in scala
...ng val it is evaluated only at the point of definition. See stackoverflow.com/questions/18887264/…
– melston
May 17 '15 at 15:07
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vector vs. list in STL
...f items into anywhere but the end of a sequence repeatedly.
Check out the complexity guarantees for each different type of container:
What are the complexity guarantees of the standard containers?
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