Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.ruby > #5076

to Adam Prescott,

Show all headers | View raw

Hi Adam.  There's only one thing I don't understand:

a = 1; [2].each { |;a| p a; }; a            #=> nil; 1
a = 1; [2].each { |;a| p a; a = 2; p a }; a #=> nil; 2; 1

This is the first time I've seen a variable passed into a code block 
with a semicolon preceding it
|;a|
and also semicolon following the variable
p a;

I'm not sure what it does nor do I understand its significance. =)

-- 
Posted via http://www.ruby-forum.com/.

Back to comp.lang.ruby | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

"Local variable within code blocks do not interfere with those outside the block" Kaye Ng <sbstn26@yahoo.com> - 2011-05-24 04:45 -0500
  Re: "Local variable within code blocks do not interfere with those outside the block" Adam Prescott <adam@aprescott.com> - 2011-05-24 05:08 -0500
    Re: "Local variable within code blocks do not interfere with those outside the block" Adam Prescott <adam@aprescott.com> - 2011-05-24 05:16 -0500
  to Adam Prescott, Kaye Ng <sbstn26@yahoo.com> - 2011-05-26 02:42 -0500
    Re: to Adam Prescott, Adam Prescott <adam@aprescott.com> - 2011-05-26 04:17 -0500
  Re: "Local variable within code blocks do not interfere with those outside the block" Bala TS <bdeveloper01@yahoo.com> - 2011-05-26 04:20 -0500
    Re: "Local variable within code blocks do not interfere with those outside the block" Josh Cheek <josh.cheek@gmail.com> - 2011-05-26 04:57 -0500
    Re: "Local variable within code blocks do not interfere with those outside the block" Adam Prescott <adam@aprescott.com> - 2011-05-26 05:05 -0500
  Re: "Local variable within code blocks do not interfere with those outside the block" Bala TS <bdeveloper01@yahoo.com> - 2011-05-26 07:46 -0500
  Re: "Local variable within code blocks do not interfere with those outside the block" Bala TS <bdeveloper01@yahoo.com> - 2011-05-26 23:09 -0500
  Re: "Local variable within code blocks do not interfere with those outside the block" Bala TS <bdeveloper01@yahoo.com> - 2011-05-26 23:11 -0500
    Re: "Local variable within code blocks do not interfere with those outside the block" Josh Cheek <josh.cheek@gmail.com> - 2011-05-26 23:30 -0500
      Re: "Local variable within code blocks do not interfere with those outside the block" Bala TS <bdeveloper01@yahoo.com> - 2011-05-26 23:59 -0500

csiph-web