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What does this square bracket and parenthesis bracket notation mean [first1,last1)?
...omment, you're right in a way that infinity is not a number, hence why the set [0, ∞) does not include it.
– wjandrea
Jul 28 '17 at 18:30
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How to read a text file into a string variable and strip newlines?
I use the following code segment to read a file in python:
23 Answers
23
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Best way to implement keyboard shortcuts in a Windows Forms application?
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You probably forgot to set the form's KeyPreview property to True. Overriding the ProcessCmdKey() method is the generic solution:
protected override bool ProcessCmdKey(ref Message msg, Keys keyData) {
if (keyData == (Keys.Control | Keys.F)) {
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Partly cherry-picking a commit with Git
I'm working on 2 different branches: release and development .
7 Answers
7
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John Carmack's Unusual Fast Inverse Square Root (Quake III)
...ge of the nature of 32-bit x86
processors, i, an integer, is
initially set to the value of the
floating point number you want to take
the inverse square of, using an
integer cast. i is then set to
0x5f3759df, minus itself shifted one
bit to the right. The right shift
drops the least ...
Rolling back a remote Git repository
...sh as usual, keeping history unchanged.
Or you can "roll back" with git reset --hard HEAD~n. If you are pushing in a public or shared repository, you may diverge and break others work based on your original branch. Git will prevent you doing so, but you can use git push -f to force the update.
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How to append contents of multiple files into one file
...d in files, not directories, etc.
-name '*.txt'
Whittle down the result set by name
-exec cat {} +
Execute the cat command for each result. "+" means only 1 instance of cat is spawned (thx @gniourf_gniourf)
>> output.file
As explained in other answers, append the cat-ed contents to t...
Can I grep only the first n lines of a file?
I have very long log files, is it possible to ask grep to only search the first 10 lines?
12 Answers
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887984k used
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2039872k free
空闲交换区总量
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Fastest way to check if a value exists in a list
...7 in a
Clearest and fastest way to do it.
You can also consider using a set, but constructing that set from your list may take more time than faster membership testing will save. The only way to be certain is to benchmark well. (this also depends on what operations you require)
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