From: JOSEPHJONES3247 <josephjones3247@...>
Date: 2011-04-22T07:57:05+09:00
Subject: Re: chomp behaviour

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'|' means in programming 'or' so the result would be. 

if "abc" is true which it is then command line will not see 

ruby -e 'puts gets.chomp("c")' 




----- Original Message ----- 
From: "Peter Zotov" <whitequark@whitequark.org> 
To: "ruby-talk ML" <ruby-talk@ruby-lang.org> 
Sent: Friday, April 15, 2011 7:21:24 PM 
Subject: Re: chomp behaviour 

On Sat, 16 Apr 2011 11:08:10 +0900, Steel Steel wrote: 
> Using 1.9.1 
> I noticed something with chomp 
> 
> $ echo "abc" | ruby -e 'puts gets.chomp("c")' 
> abc 
> 
> $ irb 
> irb(main):001:0> "abc".chomp("c") 
> => "ab" 
> 
> It doesn't work on the command line, or am i doing it wrong.? 
> comments? 

"gets" returns the whole read string, with trailing newline ("\n"). 
Try: echo "abc" | ruby -e 'p gets' # => "abc\n" 

You can either chomp it twice, or do "echo -n" instead of "echo" 
(the former does not add a newline), or use "strip" method, which 
removes all whitespace from begin and end of a string (check also 
"rstrip" and "lstrip" functions). 

-- 
WBR, Peter Zotov. 


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