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git: undo all working dir changes including new files
...
git reset --hard # removes staged and working directory changes
## !! be very careful with these !!
## you may end up deleting what you don't want to
## read comments and manual.
git clean -f -d # remove untracked
git clean -f -x -d # CAUTION: as above but r...
Timing a command's execution in PowerShell
Is there a simple way to time the execution of a command in PowerShell, like the 'time' command in Linux?
I came up with this:
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Convert list to array in Java [duplicate]
...trinsified, making the performance of the empty array version
the same and sometimes even better, compared to the pre-sized
version. Also passing pre-sized array is dangerous for a concurrent or
synchronized collection as a data race is possible between the
size and toArray call which ...
multiple definition of template specialization when using different objects
... in different object files (ie. in this case it is instantiated in other.c and main.c) but the original object itself is defined only in one file - in this case hello.h.
– Justin Liang
Apr 8 '15 at 17:02
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What to do with branch after merge
I had two branches: master and branch1 . I just merged branch1 back into master and I'm done with that branch. Should I delete it or just let it sit around? Will deleting it cause any loss of data?
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Is there “Break on Exception” in IntelliJ?
...it'll still be selected, making it easy to flick breaking on exceptions on and off.
This will cause IntelliJ to break at the point in the code (or library code) where the exception was raised. Specifically, you get a 'first chance' at exception handling, before the stack is walked looking for catc...
PowerShell and the -contains operator
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The -Contains operator doesn't do substring comparisons and the match must be on a complete string and is used to search collections.
From the documentation you linked to:
-Contains
Description: Containment operator. Tells whether a collection of reference values includes a...
Clone private git repo with dockerfile
...tall -y git
# Make ssh dir
RUN mkdir /root/.ssh/
# Copy over private key, and set permissions
# Warning! Anyone who gets their hands on this image will be able
# to retrieve this private key file from the corresponding image layer
ADD id_rsa /root/.ssh/id_rsa
# Create known_hosts
RUN touch /root/....
What is the maven-shade-plugin used for, and why would you want to relocate Java packages?
...eing used in someone's pom.xml. I've never used maven-shade-plugin before (and I'm a Maven n00b) so I tried to understand the reason for using this and what it does.
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“No newline at end of file” compiler warning
...he problems that can occur if there is no newline. According to the ANSI standard the #include of a file at the beginning inserts the file exactly as it is to the front of the file and does not insert the new line after the #include <foo.h> after the contents of the file. So if you include a f...