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How to remove a key from Hash and get the remaining hash in Ruby/Rails?
...l of ActiveSupport; you can just include them then require "active_support/core_ext/hash/except"
– GMA
May 13 '16 at 7:33
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Maven: how to do parallel builds?
When you build with maven on a multicore / multi-CPU machine it would often be possible to build different subprojects in parallel. Is there a way to do this with maven? Is there a plugin for this / whatever?
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Git commit in terminal opens VIM, but can't get back to terminal
... Te set the editor permanently you can use: git config --global core.editor myFavoriteEditor
– Machta
Feb 17 '14 at 19:21
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How to configure an existing git repo to be shared by a UNIX group
...e --shared=all repodir # sets some important variables in repodir/config ("core.sharedRepository=2" and "receive.denyNonFastforwards=true")
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vertical-align with Bootstrap 3
...mi still cannot find any use case for your suggestions. One of Bootstrap's core, disctintive features is that columns stack on top of each other once they don't fit horizontally. That doesn't happen anymore with your solution. The grid system works even if you load just the styles, as you can see in...
No IUserTokenProvider is registered
I recently updated Asp.Net Identity Core of my application form 1.0 to 2.0.
10 Answers
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Gdb print to file instead of stdout
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Extending on @qubodup's answer
gdb core.3599 -ex bt -ex quit |& tee backtrace.log
the -ex switch runs a gdb command. So the above loads the core file, runs bt command, then quit command. Output is written to backtrace.log and also on the screen.
Another...
Can I store the .git folder outside the files I want tracked?
...et the repository know where the work tree is, set the configuration value core.worktree. To let the work tree know where it's git directory is, add a file named .git (not a folder!) and add a line like
gitdir: /path/to/repo.git
Since git 1.7.5 the init command learned an extra option for this.
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Get OS-level system information
...lic static void main(String[] args) {
/* Total number of processors or cores available to the JVM */
System.out.println("Available processors (cores): " +
Runtime.getRuntime().availableProcessors());
/* Total amount of free memory available to the JVM */
System.out.println(...
What exactly are “spin-locks”?
... in the WAIT state and preempts it by scheduling other threads on the same core. This has a performance penalty if the wait time is really short, because your thread now has to wait for a preemption to receive CPU time again.
Besides, kernel objects are not available in every state of the kernel, su...