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Is a RelativeLayout more expensive than a LinearLayout?
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In a talk at Google I/O 2013 (Writing Custom Views for Android), Romain Guy clarified the misunderstanding that caused everyone to start using RelativeLayouts for everything. A RelativeLayout always has to do two measure passes. Overall it is neglig...
What are the special dollar sign shell variables?
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$1, $2, $3, ... are the positional parameters.
"$@" is an array-like construct of all positional parameters, {$1, $2, $3 ...}.
"$*" is the IFS expansion of all positional parameters, $1 $2 $3 ....
$# is the number of positional pa...
The difference between fork(), vfork(), exec() and clone()
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answered Jan 31 '11 at 21:42
JavierJavier
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Embedding JavaScript engine into .NET [closed]
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How to get result of console.trace() as string in javascript with chrome or firefox?
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chjjchjj
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Efficiently test if a port is open on Linux?
...>&6
cat <&6
I'm using 6 as the file descriptor because 0,1,2 are stdin, stdout, and stderr. 5 is sometimes used by Bash for child processes, so 3,4,6,7,8, and 9 should be safe.
As per the comment below, to test for listening on a local server in a script:
exec 6<>/dev/tcp/127...
Effect of NOLOCK hint in SELECT statements
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1) Yes, a select with NOLOCK will complete faster than a normal select.
2) Yes, a select with...
How can I connect to Android with ADB over TCP? [closed]
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