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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...
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.
...
Append an array to another array in JavaScript [duplicate]
...
If you want to modify the original array instead of returning a new array, use .push()...
array1.push.apply(array1, array2);
array1.push.apply(array1, array3);
I used .apply to push the individual members of arrays 2 and 3 ...
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 ...
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();
...
What is the difference between \r and \n?
...dardized on NL--a character that doesn't even exist in the ASCII character set. In Unicode, NL is U+0085 NEXT LINE, but the actual EBCDIC value is 0x15.
Why did different systems choose different methods? Simply because there was no universal standard. Where your keyboard probably says "Enter",...
SQL Server SELECT LAST N Rows
This is a known question but the best solution I've found is something like:
18 Answers
...
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:
...
Force unmount of NFS-mounted directory [closed]
I have an NFS-mounted directory on a Linux machine that has hung. I've tried to force an unmount, but it doesn't seem to work:
...
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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