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Full Discussion: Date and Time sorting
Top Forums Shell Programming and Scripting Date and Time sorting Post 302557261 by me_newbie on Tuesday 20th of September 2011 05:49:38 PM
Old 09-20-2011
Hi

thanks corona and radoulov... both solutions are perfect and solved my problem but can anyone explain how the following code works
Code:
sort -t/ -k3n -k2,2M -k1n in file

Best Regards,

Ewa

Last edited by Scott; 09-20-2011 at 07:46 PM.. Reason: Code tags
 

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Prima::DetailedList(3)					User Contributed Perl Documentation				    Prima::DetailedList(3)

NAME
Prima::DetailedList - a multi-column list viewer with controlling header widget. SYNOPSIS
use Prima::DetailedList; my $l = $w-> insert( 'Prima::DetailedList', columns => 2, headers => [ 'Column 1', 'Column 2' ], items => [ ['Row 1, Col 1', 'Row 1, Col 2'], ['Row 2, Col 1', 'Row 2, Col 2'] ], ); $l-> sort(1); DESCRIPTION
Prima::DetailedList is a descendant of Prima::ListViewer, and as such provides a certain level of abstraction. It overloads format of items in order to support multi-column ( 2D ) cell span. It also inserts Prima::Header widget on top of the list, so the user can interactively move, resize and sort the content of the list. The sorting mechanism is realized inside the package; it is activated by the mouse click on a header tab. Since the class inherits Prima::ListViewer, some functionality, like 'item search by key', or "get_item_text" method can not operate on 2D lists. Therefore, mainColumn property is introduced, that selects the column representing all the data. API
Events Sort COLUMN, DIRECTION Called inside sort method, to facilitate custom algorithms of sorting. If the callback procedure is willing to sort by COLUMN index, then it must call "clear_event", to signal the event flow stop. The DIRECTION is a boolean flag, specifying whether the sorting must be performed is ascending ( 1 ) or descending ( 0 ) order. The callback procedure must operate on the internal storage of "{items}", which is an array of arrays of scalars. The default action is the literal sorting algorithm, where precedence is arbitrated by "cmp" operator ( see "Equality Operators" in perlop ) . Properties columns INTEGER Governs the number of columns in items. If set-called, and the new number is different from the old number, both items and headers are restructured. Default value: 0 headerClass Assigns a header class. Create-only property. Default value: "Prima::Header" headerProfile HASH Assigns hash of properties, passed to the header widget during the creation. Create-only property. headerDelegations ARRAY Assigns a header widget list of delegated notifications. Create-only property. headers ARRAY Array of strings, passed to the header widget as column titles. items ARRAY Array of arrays of scalars, of arbitrary kind. The default behavior, however, assumes that the scalars are strings. The data direction is from left to right and from top to bottom. mainColumn INTEGER Selects the column, responsible for representation of all the data. As the user clicks the header tab, "mainColumn" is automatically changed to the corresponding column. Default value: 0 Methods sort [ COLUMN ] Sorts items by the COLUMN index in ascending order. If COLUMN is not specified, sorts by the last specified column, or by #0 if it is the first "sort" invocation. If COLUMN was specified, and the last specified column equals to COLUMN, the sort direction is reversed. The method does not perform sorting itself, but invokes Sort notification, so the sorting algorithms can be overloaded, or be applied differently to the columns. AUTHOR
Dmitry Karasik, <dmitry@karasik.eu.org>. SEE ALSO
Prima, Prima::Lists, Prima::Header, examples/sheet.pl perl v5.14.2 2009-02-24 Prima::DetailedList(3)
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