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How do I force detach Screen from another SSH session?
...ady-running screen session, and screen -r reattaches the existing session. By running screen -d -r, you force screen to detach it and then resume the session.
If you use the capital -D -RR, I quote the man page because it's too good to pass up.
Attach here and now. Whatever that means, just d...
Check a collection size with JSTL
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As suggested by @Joel and @Mark Chorley in earlier comments:
${empty companies}
This checks for null and empty lists/collections/arrays. It doesn't get you the length but it satisfies the example in the OP. If you can get away with it ...
git replace local version with remote version
...remote/branch:subdir/
You can then (optionally) update your working copy by doing
git checkout-index -u --force
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Get int value from enum in C#
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Since Enums can be any integral type (byte, int, short, etc.), a more robust way to get the underlying integral value of the enum would be to make use of the GetTypeCode method in conjunction with the Convert class:
enum Sides {
Left, Right, Top, Bottom
}
Si...
Checking out Git tag leads to “detached HEAD state”
... a git checkout v2.0, you are switching to a commit that is not pointed to by a branch. The HEAD is now "detached" and not pointing to a branch. If you decide to make a commit now (as you may), there's no branch pointer to update to track this commit. Switching back to another commit will make you l...
When using the Java debugger in Intellij what does “Drop Frame” mean?
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In Vim, how do I delete everything within the double quotes?
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What is P99 latency?
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How to negate the whole regex?
...ot containing a string?
A regex to match a substring that isn’t followed by a certain other substring.
More examples
These are attempts to come up with regex solutions to toy problems as exercises; they should be educational if you're trying to learn the various ways you can use lookarounds (ne...
Purging file from Git repo failed, unable to create new backup
I tried to remove a file from my remote repo by running:
4 Answers
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