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How to automatically generate a stacktrace when my program crashes
...main+0xdb)[0x3a9b91c4bb]
./test[0x40086a]
This shows the load module, offset, and function that each frame in the stack came from. Here you can see the signal handler on top of the stack, and the libc functions before main in addition to main, foo, bar, and baz.
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Wait for a process to finish
Is there any builtin feature in Bash to wait for a process to finish?
14 Answers
14
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How do I move forward and backward between commits in git?
...f the linked answers. FWIW, I tried a version of this with a simple linear set of commits and finally just gave up.
– Snowcrash
Aug 20 '19 at 11:47
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Checkout subdirectories in Git?
...t/blob/v2.19.0/t/t5616-partial-clone.sh
Test it out
#!/usr/bin/env bash
set -eu
list-objects() (
git rev-list --all --objects
echo "master commit SHA: $(git log -1 --format="%H")"
echo "mybranch commit SHA: $(git log -1 --format="%H")"
git ls-tree master
git ls-tree mybranch | grep myb...
What would a “frozen dict” be?
... too often (though it would still probably be useful more often than frozenset is).
The most common reason to want such a type is when memoizing function calls for functions with unknown arguments. The most common solution to store a hashable equivalent of a dict (where the values are hashable) is ...
Trimming a huge (3.5 GB) csv file to read into R
... incomplete rows (leading Access and SQL to choke). It's county level data set broken into segments, sub-segments, and sub-sub-segments (for a total of ~200 factors) for 40 years. In short, it's huge, and it's not going to fit into memory if I try to simply read it.
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ruby on rails f.select options with custom attributes
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
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Pairs from single list
Often enough, I've found the need to process a list by pairs. I was wondering which would be the pythonic and efficient way to do it, and found this on Google:
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Generate a random point within a circle (uniformly)
...orm value between 0 and 1
CDF-1(random()) = √random()
Which is what we set out to derive :-)
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How to jump to a specific character in vim?
...won't be matched) to change the highlighted search string. There is also :set invhls which is useful for toggling the highlights off and on (I map this to a shortcut for quick toggling).
– FazJaxton
Apr 4 '19 at 14:34
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