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Transmitting newline character “\n”
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Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?
... entry on caching, I'm gonna narrow it down here.
A cache is organized in sets and lines. At a time, only one set is used, out of which any of the lines it contains can be used. The memory a line can mirror times the number of lines gives us the cache size.
For a particular memory address, we can ...
Alternate output format for psql
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You can also try \pset format wrapped (allowed formats are unaligned, aligned, wrapped, html, latex, troff-ms). If the display is narrow enough it will word wrap each column.
– Bryce
Apr 14 '13 at 23:05
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How can I make an “are you sure” prompt in a Windows batchfile?
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You want something like:
@echo off
setlocal
:PROMPT
SET /P AREYOUSURE=Are you sure (Y/[N])?
IF /I "%AREYOUSURE%" NEQ "Y" GOTO END
echo ... rest of file ...
:END
endlocal
share
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Python, Unicode, and the Windows console
...h to replace all unencodable characters with ? in your case then you could set PYTHONIOENCODING envvar:
T:\> set PYTHONIOENCODING=:replace
T:\> python3 -c "print(u'[\N{EURO SIGN}]')"
[?]
In Python 3.6+, the encoding specified by PYTHONIOENCODING envvar is ignored for interactive console buf...
Mac OS X Terminal: Map option+delete to “backward delete word”
Tried to map it from Preferences -> Settings -> Keyboard, but the "key" combo box has only "forward delete" but no "delete". My keyboard on the other hand has only "delete" and no "forward delete"!
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How to convert DOS/Windows newline (CRLF) to Unix newline (LF) in a Bash script?
...ammatically with the option -c {command} :
Dos to Unix:
vim file.txt -c "set ff=unix" -c ":wq"
Unix to dos:
vim file.txt -c "set ff=dos" -c ":wq"
"set ff=unix/dos" means change fileformat (ff) of the file to Unix/DOS end of line format
":wq" means write file to disk and quit the editor (allo...
Android SDK installation doesn't find JDK
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Doesn't work for me on Windows 7 x64. I'm not joking. I set JAVA_HOME and I tried clicking back and next several times, but it's still not working. Neither does running SDK Manager.exe from the archive and I am positive I have JDK 7 installed (even ran the installer again and it t...
Internet Explorer's CSS rules limits
...viding this. I had a bug that I couldn't locate locally, and due to our asset minification in prod, it was not possible to track down what was going wrong. I had a feeling we were over IE's selector limit, and your script found it for me. Thank you so much!
– robabby
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Recover from git reset --hard?
... way to recover uncommitted changes to the working directory from a git reset --hard HEAD ?
22 Answers
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