From: Banzai <noemail@...>
Date: 2007-06-18T00:15:01+09:00
Subject: Re: Syntax error with blocks

On 2007-06-17 10:05:37 -0500, Oliver Sauders <oliver.saunders@gmail.com> said:

> OK guys, wtf am I doing wrong here?
> The manual says I should be able to do this.
> 
> =======================
> 
> irb(main):150:0> { puts 'foo' }
> SyntaxError: compile error
> (irb):150: syntax error, unexpected tSTRING_BEG, expecting kDO or '{' or
> '('
> { puts 'foo' }
>         ^
> (irb):150: syntax error, unexpected '}', expecting $end
>   from (irb):150
>   from :0
> irb(main):151:0> { puts('foo') }
> SyntaxError: compile error
> (irb):151: odd number list for Hash
>   from (irb):151
>   from :0
> irb(main):158:0> do puts 'foo' end
> SyntaxError: compile error
> (irb):158: syntax error, unexpected kDO
> do puts 'foo' end
>   ^
> (irb):158: syntax error, unexpected kEND, expecting $end
>   from (irb):158
>   from :0
> irb(main):160:0> do; puts 'foo'; end
> SyntaxError: compile error
> (irb):160: syntax error, unexpected kDO
> do; puts 'foo'; end
>   ^
> (irb):160: syntax error, unexpected kEND, expecting $end
>   from (irb):160
>   from :0

A code block is not a valid statement.  If you want to create a Proc 
object, use lambda.

irb(main):001:0> x = lambda { puts 'foo' }
=> #<Proc:0x0035393c@(irb):1>
irb(main):002:0> x.call
foo
=> nil

-- 
H. Asari