From: Brian Candler <b.candler@...>
Date: 2011-09-30T23:01:34+09:00
Subject: Re: IO.readlines will not accept variable with file name Why?

Peter Vandenabeele wrote in post #1024278:

>> Peter is there any difference between chomp and
>> This:
>> string = string.gsub(/\n/," ")
>> chomp looks easier to remember.
>
> Well yes, a lot of difference ...
>
> gsub(/\n/, "") will produce a new string, where occurences of a newline
> character ("\n") are replaced with a space.
>
> chomp will remove the last newline/carriage return combination
> (0 or 1 CR and 0 or 1 LF if I am right).

chomp does also produce a new string:

irb(main):010:0> a = "abc\n"
=> "abc\n"
irb(main):011:0> a.chomp
=> "abc"
irb(main):012:0> a
=> "abc\n"

But I think chomp is roughly equivalent to
    gsub(/\r?\n?\z/, '')

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