From: badboy <badboy@...>
Date: 2009-03-09T04:37:07+09:00
Subject: Re: Setting the contents of a file to a variable?

Brian Candler schrieb:
> Stefan Codrescu wrote:
>> ok, thanks ill try that but i also found
>> file = File.open("guess.txt")
>> $guess = file.gets
>> which works for what im using it for.
> 
> BTW, you forgot to close the file. Although that doesn't matter in a 
> short-lived script, there is a way of avoiding this problem:
> 
>   File.open("guess.txt") do |file|
>     $guess = file.gets
>   end
> 
> This opens the file, runs the block, and then closes the file (even if 
> the block aborted with an exception rather than completing successfully)
> 
> BTW, local variables which are first seen within a block are private to 
> that block, so if you want do use a local variable do this:
> 
>   guess = nil
>   File.open("guess.txt") do |file|
>     guess = file.gets
>   end
>   ... now 'guess' contains the result of reading the 1st line of file
if you just need the content, use File.read, if you need the lines in an
Array use File.readlines