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What does |= (single pipe equal) and &=(single ampersand equal) mean
...|= will only ever add bits to the target
&= will only ever remove bits from the target
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How to create a HashMap with two keys (Key-Pair, Value)?
...s. I want them to be put into a HashMap. But I want to access the elements from the HashMap based on Array Index. Something like:
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Create a unique number with javascript time
...ted answers, I got 2 and even 3 times the same value in a row when calling from an async function. This seems to provide enough randomness for a standard 8-core CPU to generate 8 unique strings exactly at the same moment, good enough for my use.
– that-ben
Jan...
How to retrieve a single file from a specific revision in Git?
...e syntax is indeed
git show object
git show $REV:$FILE
git show somebranch:from/the/root/myfile.txt
git show HEAD^^^:test/test.py
The command takes the usual style of revision, meaning you can use any of the following:
branch name (as suggested by ash)
HEAD + x number of ^ characters
The SHA1 hash...
How can I create directory tree in C++/Linux?
......
status = mkdir("/tmp/a/b/c", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH);
From here. You may have to do separate mkdirs for /tmp, /tmp/a, /tmp/a/b/ and then /tmp/a/b/c because there isn't an equivalent of the -p flag in the C api. Be sure and ignore the EEXISTS errno while you're doing the upper ...
What is AppDomain? [duplicate]
...entFire: If some code running in some thread and some AppDomain calls code from another AppDomain, then the thread "crosses" the AppDomain border and runs code from that other AppDomain. So threads do not belong to specific AppDomains...although one can say that a thread "belongs" to the domain the ...
Multiple Inheritance in C#
...tract base class that implements both IFirst and ISecond, and then inherit from just that base.
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Rails migration for has_and_belongs_to_many join table
...p columns. Here is a better example of a has_and_belongs_to_many migration from the link you gave. I'm looking for a way to do it from the command line with script/generate migration ...
– ma11hew28
Dec 7 '10 at 20:44
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Maven Snapshot Repository vs Release Repository
...1.3.0 might have the name commons-lang-1.3.0-20090314.182342-1.jar.
Taken from refcard
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How do you get a directory listing sorted by creation date in python?
...te: to sort dirpath's entries by modification date in Python 3:
import os
from pathlib import Path
paths = sorted(Path(dirpath).iterdir(), key=os.path.getmtime)
(put @Pygirl's answer here for greater visibility)
If you already have a list of filenames files, then to sort it inplace by creation ...