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Should I use multiplication or division?
... Multiplying by the reciprocal is always going to introduce more error, at least because one more rounding must happen.
– Electro
Apr 21 '13 at 10:06
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Calling shell functions with xargs
...fining functions in a .bashrc or other script, you can wrap the file or at least the function definitions with a setting of allexport:
set -o allexport
function funcy_town {
echo 'this is a function'
}
function func_rock {
echo 'this is a function, but different'
}
function cyber_func {
echo...
How to only find files in a given directory, and ignore subdirectories using bash
...t level, ls -l /dev/abc-* /dev/*/abc-* | fgrep -v /dev/.udev ... except at least on my Linux /dev/*/* does not include files in /dev/.udev/* so you can omit the fgrep -v.
– tripleee
Oct 10 '11 at 16:29
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How can I shuffle the lines of a text file on the Unix command line or in a shell script?
...
You can use shuf. On some systems at least (doesn't appear to be in POSIX).
As jleedev pointed out: sort -R might also be an option. On some systems at least; well, you get the picture. It has been pointed out that sort -R doesn't really shuffle but instead sor...
Should image size be defined in the img tag height/width attributes or in CSS? [duplicate]
...er) should have that information in order to relate it to the user. At the least, the aspect ratio could prove useful ("image has a width of 15 and a height of 200"). Such user agents wouldn't necessarily process any CSS.
The spec says that the width and height attributes can also be used to overri...
Is it better to reuse a StringBuilder in a loop?
...gth is much shorter than its capacity). In Java this cycle always makes at least one copy (in StringBuilder.toString()).
– Ivan Dubrov
Jul 16 '09 at 1:54
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iPad Web App: Detect Virtual Keyboard Using JavaScript in Safari?
...ly, you would expect this to not be visible to the user. Unfortunately, at least when running in the Simulator, the iPad visibly (though quickly) scrolls up and down again. Still, it works, at least in some specific situations.
I've tested this on an iPad, and it seems to work fine.
...
Why is whitespace sometimes needed around metacharacters?
... do, since & is a metacharacter. Therefore, your tattoo should have at least one space character.
:(){ :|:&};:
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Grep only the first match and stop
...e. If you're looking to search general files, it is less good at that, at least in ack 1.x. Go read about ack and see if maybe it fits your needs.
– Andy Lester
Dec 30 '12 at 20:22
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Is it unnecessary to put super() in constructor?
...en there is no explicit constructor in the class.
So all classes have at least one constructor.
Subclasses constructors may specify as the first thing they do which constructor in the superclass to invoke before executing the code in the subclass's constructor.
If the subclass constructor does n...