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How do you round a floating point number in Perl?
...ntf() or printf() is usually the easiest
route.
printf("%.3f", 3.1415926535); # prints 3.142
The POSIX module (part of the standard Perl distribution) implements
ceil(), floor(), and a number of other mathematical and trigonometric
functions.
use POSIX;
$ceil = ceil(3.5); ...
Set selected item of spinner programmatically
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21 Answers
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How do I find the caller of a method using stacktrace or reflection?
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12 Answers
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Case insensitive regular expression without re.compile?
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edited Jun 26 '16 at 11:26
Mark Amery
98.8k4848 gold badges336336 silver badges379379 bronze badges
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How to implement “select all” check box in HTML?
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29 Answers
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Best practices for SQL varchar column length [closed]
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244
No DBMS I know of has any "optimization" that will make a VARCHAR with a 2^n length perform be...
How to show line number when executing bash script
...or example, if your script reads:
$ cat script
foo=10
echo ${foo}
echo $((2 + 2))
Executing it thus would print line numbers:
$ PS4='Line ${LINENO}: ' bash -x script
Line 1: foo=10
Line 2: echo 10
10
Line 3: echo 4
4
http://wiki.bash-hackers.org/scripting/debuggingtips gives the ultimate PS4 t...
How to read a file line-by-line into a list?
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28 Answers
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Offset a background image from the right using CSS
...etails on the supported browsers.
Used source: http://tanalin.com/en/blog/2011/09/css3-background-position/
Update:
This feature is now supported in all major browsers, including mobile browsers.
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How to reset Android Studio
I want to reset Android Studio 0.2.13 to the default state. That means reset all settings, remove all projects, all gradle files so that it would act like a fresh installation. What steps do I have to follow to achieve this?
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