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Full Discussion: sort and uniq in perl
Top Forums Shell Programming and Scripting sort and uniq in perl Post 302073821 by cbkihong on Thursday 18th of May 2006 02:09:42 AM
Old 05-18-2006
That's not complicated, but of course that needs some code.

A hash in perl is good for filtering identical items by using hash keys. Then you can also use sort() to sort the items.

An example:

Code:
@array = ('Apple', 'Orange', 'Apple', 'Banana');
%hashTemp = map { $_ => 1 } @array;
@array_out = sort keys %hashTemp;
# @array_out contains ('Apple', 'Banana', 'Orange')

 

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AKBD(4) 						   BSD Kernel Interfaces Manual 						   AKBD(4)

NAME
akbd -- Apple Desktop Bus keyboard driver for wscons SYNOPSIS
akbd* at obio? wskbd* at akbd? console ? options ALTXBUTTONS options CAPS_IS_CONTROL options FORCE_FUNCTION_KEYS DESCRIPTION
This driver provides the wscons(4) driver with support for Apple Desktop Bus keyboards. To work around the limited number of buttons found on most ADB mice, one can map key sequences to trigger mouse button events. To map Option+1, Option+2, Option+3 to mouse buttons 1, 2, and 3 respectively, add the following line to your kernel configuration file: options ALTXBUTTONS On macppc systems it is possible to tweak the keyboard driver to treat the caps lock key on an ADB keyboard as a control key. This requires special remapping because of ADB's strange emulation of a mechanically-locked key. To enable this code add the following line to your kernel configuration file: options CAPS_IS_CONTROL On macppc PowerBooks, several function keys double as "hot keys" (brightness, volume, eject) when the Fn modifier is held down. Mac OS X likes to reprogram the keyboard controller to send hot key events when Fn is not held down and send function key events when it is. To transform the non-keyboard "button" events back into function key events, place the following line in your kernel configuration file: options FORCE_FUNCTION_KEYS SUPPORTED HARDWARE
NetBSD is known to support the following ADB keyboards: o On-board keyboards on PowerBook models o Apple Standard Keyboard o Apple Keyboard II o Apple Extended Keyboard o Apple Extended Keyboard II o Apple Adjustable Keyboard o Most third-party ADB keyboards are supported SEE ALSO
adb(4), wscons(4), wskbd(4), wsconsctl(8) BUGS
The number pad on extended keyboards does not send out the proper key codes for many applications. The LEDs on extended keyboards are not functional under NetBSD. BSD
September 21, 2003 BSD
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