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Diff files present in two different directories
...to do it, or do I have to write a shell script to get the file listing and then iterate through them?
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How to remove RVM (Ruby Version Manager) from my system
...u see:
Psychologist intervened, cancelling implosion, crisis avoided :)
Then you may want to use --force
rvm implode --force
Then remove RVM from the following locations:
rm -rf /usr/local/rvm
sudo rm /etc/profile.d/rvm.sh
sudo rm /etc/rvmrc
sudo rm ~/.rvmrc
Check the following files and re...
Define: What is a HashSet?
...tWith, UnionWith.
If you are familiar with the object constraint language then you will identify these set operations. You will also see that it is one step closer to an implementation of executable UML.
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CABasicAnimation resets to initial value after animation completes
... don't know the end position (e.g. a slow fade that the user can pause and then reverse), then you can query the presentation layer directly to find the current value, and then update the model.
NSNumber *opacity = [self.layer.presentationLayer valueForKeyPath:@"opacity"];
[self.layer setValue:opac...
How do I check if the Java JDK is installed on Mac?
...OME="$(/usr/libexec/java_home -v $REQUESTED_JAVA_VERSION 2>/dev/null)"; then
# Do this if you want to export JAVA_HOME
export JAVA_HOME="$POSSIBLE_JAVA_HOME"
echo "Java SDK is installed"
else
echo "Did not find any installed JDK for version $REQUESTED_JAVA_VERSION"
fi
You might ...
What is the difference between char array and char pointer in C?
...d;
Note the implicit cast from char[] to char *, which is always legal.
Then if you modify c[0], you also modify __unnamed, which is UB.
This is documented at 6.4.5 "String literals":
5 In translation phase 7, a byte or code of value zero is appended to each multibyte
character sequence th...
How to get config parameters in Symfony2 Twig Templates
... the global variable you want to set is more complicated - say an object - then you won't be able to use the above method. Instead, you'll need to create a Twig Extension and return the global variable as one of the entries in the getGlobals method.
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What is the difference between “git branch” and “git checkout -b”?
...it branch BRANCH_NAME # create a new branch
git switch BRANCH_NAME # then switch to the new branch
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GitHub: make fork an “own project”
...b.com:USERNAME/NEW_REPOSITORY.git (if you used the same name for the repo, then NEW_REPOSITORY == REPOSITORY ????????)
git push
????????
(I use ssh, but if you use https your github urls will look like https://github.com/USERNAME/REPOSITORY.git)
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SQL Server Management Studio, how to get execution time down to milliseconds
...e button (next to Include Actual Execution Time)
Keyboard: Shift-Alt-S
Then you get a new tab which records the timings, IO data and rowcounts etc for (up to) the last 10 exections (plus averages!):
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