From: "David A. Black" <dblack@...>
Date: 2009-10-11T19:38:50+09:00
Subject: Tip du jour: no need to chomp before to_i

Hi --

Very minor point, but in case it's useful:

   n = gets.chomp.to_i

does the same thing as:

   n = gets.to_i

because to_i doesn't do anything with the trailing newline anyway.

This is even the case if you use the fussier Integer method. Integer
is fussier in the sense that it doesn't like non-numeric strings:

   "123abc".to_i      => 123
   Integer("123abc")  => error

But it doesn't mind whitespace:

   Integer("\t  \n  123\n  ")    => 123

so you can do Integer(gets) without chomping.

I can't think of any exceptions or weird edge cases, but if you can,
please report them :-)


David

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