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What is reflection and why is it useful?
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How to get the source directory of a Bash script from within the script itself?
...e care of both possibilities.
To understand how it works, try running this more verbose form:
#!/bin/bash
SOURCE="${BASH_SOURCE[0]}"
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
TARGET="$(readlink "$SOURCE")"
if [[ $TARGET == /* ]]; then
echo "SOURCE '$...
What do single quotes do in C++ when used on multiple characters?
...3/1 - Character literals
(...) An ordinary character literal that contains more than
one c-char is a multicharacter literal . A multicharacter literal has type int and implementation-defined
value.
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Reorder levels of a factor without changing order of values
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some more, just for the record
## reorder is a base function
df$letters <- reorder(df$letters, new.order=letters[4:1])
library(gdata)
df$letters <- reorder.factor(df$letters, letters[4:1])
You may also find useful Releve...
How do I convert between big-endian and little-endian values in C++?
...values they work for signed integers as well.
For floats and doubles it's more difficult as with plain integers as these may or not may be in the host machines byte-order. You can get little-endian floats on big-endian machines and vice versa.
Other compilers have similar intrinsics as well.
In ...
How to send a command to all panes in tmux?
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How do you comment out code in PowerShell?
...wershell
In PowerShell V2 <# #> can be used for block comments and more specifically for help comments.
#REQUIRES -Version 2.0
<#
.SYNOPSIS
A brief description of the function or script. This keyword can be used
only once in each topic.
.DESCRIPTION
A detailed description of...
IISExpress returns a 503 error from remote machines
...our system-tray and stop it to force it to restart. Not sure if there is a more elegant way. But this worked for me. Thanks!
– The Senator
May 23 '13 at 13:33
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Why use make over a shell script?
...nd on that. While you could do this with a shell script, it would be a lot more work (explicitly checking the last-modified dates on all the files, etc.) The only obvious alternative with a shell script is to rebuild everything every time. For tiny projects this is a perfectly reasonable approach, b...
AngularJS : How to watch service variables?
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What are pros of this solution? It needs more code in a service, and somewhat the same amount of code in a controller (since we also need to unregister on $destroy). I could say for execution speed, but in most cases it just won't matter.
– Ale...