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Columnize - Format an Array as a Column-aligned String
============================================================================
In showing a long lists, sometimes one would prefer to see the value
arranged aligned in columns. Some examples include listing methods of
an object, listing debugger commands, or showing a numeric array with data
aligned.
Setup
-----
$ irb
>> a = (1..10).to_a
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>> require 'columnize'
=> true
>> include Columnize
=> Object
>> g = %w(bibrons golden madascar leopard mourning suras tokay)
=> ["bibrons", "golden", "madascar", "leopard", "mourning", "suras", "tokay"]
With numeric data
-----------------
columnize(a)
=> "1 2 3 4 5 6 7 8 9 10\n"
>> puts Columnize::columnize(a, :arrange_array => true, :displaywidth => 10)
[1, 2
3, 4
5, 6
7, 8
9, 10
]
=> nil
>> puts Columnize::columnize(a, :arrange_array => true, :displaywidth => 20)
[1, 2, 3, 4, 5, 6
7, 8, 9, 10
]
With String data
----------------
>> puts columnize g, :displaywidth => 15
bibrons suras
golden tokay
madascar
leopard
mourning
=> nil
>> puts columnize g, {:displaywidth => 19, :colsep => ' | '}
bibrons | suras
golden | tokay
madascar
leopard
mourning
=> nil
>> puts columnize g, {:displaywidth => 18, :colsep => ' | ', :ljust=>false}
bibrons | mourning
golden | suras
madascar | tokay
leopard
Credits
-------
This is adapted from a method of the same name from Python's cmd module.
Other stuff
-----------
Author: Rocky Bernstein <rockyb@rubyforge.org>
License: Copyright (c) 2011 Rocky Bernstein
Warranty
--------
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
Version data entries
6 entries across 4 versions & 3 rubygems