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Is there a performance difference between i++ and ++i in C++?
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What the compiler can avoid is the second copy to return tmp, by allocating tmp in the caller, through NRVO, as mentioned by another comment.
– Blaisorblade
Jan 15 '09 at 0:13
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Getting indices of True values in a boolean list
... doing enumerate(x) but I guess all I was doing was enumerating 4? Is that what was happening? Thanks for the help
– Charles Smith
Jan 30 '14 at 22:12
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What can be the reasons of connection refused errors?
I'm trying to write a server program in C,
using another client, I get this error when I try to connect through port 2080 for example.
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LINQ to SQL Left Outer Join
...s? I fail to see how any of those keywords magically makes it a left join. What does the "into sr" do? Linq frustrates me sometimes :)
– Joe Phillips
Apr 7 '14 at 21:29
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JavaScript private methods
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@changed what is the best compromise to have hidden functions (un-callable from outside), nice sintax (no .call) and small memory (no functions on the instance) ? Does that even exist ?
– Ciprian Tomoiagă
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Get the (last part of) current directory name in C#
...nity No, it will return the directory name, but it probably is not exactly what the question was about.
– Jakob Möllås
May 16 '11 at 13:47
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Configuring user and password with Git Bash
...Credential Manager → Windows Credentials → find the line (Git: https://whatever/your-repository/url) → edit,
user name is "PersonalAccessToken" and password is your access token.
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impro...
Updating a local repository with changes from a GitHub repository
... from GitHub, and that remote repository has since had changes made to it. What's the correct command to update my local copy with the latest changes?
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How do I get an animated gif to work in WPF?
What control type should I use - Image , MediaElement , etc.?
18 Answers
18
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Turning multi-line string into single comma-separated
...down into fields
-vORS=, sets the "output record separator" to ,, which is what you wanted
{ print $2 } tells awk to print the second field for every record (line)
file.txt is your filename
sed just gets rid of the trailing , and turns it into a newline (if you want no newline, you can do s/,$//)
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