From: "Carlo E. Prelz" <fluido@...>
Date: 2013-01-12T17:00:27+09:00
Subject: Re: what is the difference between a.map and a.map?

	Subject: what is the difference between a.map and a.map?
	Date: Sat 12 Jan 13 04:54:43PM +0900

Quoting Arup Rakshit (lists@ruby-forum.com):

> I am confused with the working of a.map and a.map! on the array
> collection.

The documentation is quite clear:

$ ri Array#map
...
...
Invokes the given block once for each element of self.

Creates a new array containing the values returned by the block.
...
...
$ ri Array#map!
...
...
Invokes the given block once for each element of self, replacing the element
with the value returned by the block.
...
...

Methods ending with ! usually modify the original object.

Carlo

-- 
  *         Se la Strada e la sua Virtu' non fossero state messe da parte,
* K * Carlo E. Prelz - fluido@fluido.as             che bisogno ci sarebbe
  *               di parlare tanto di amore e di rettitudine? (Chuang-Tzu)