From: Gary Wright <gwtmp01@...>
Date: 2007-02-15T23:50:23+09:00
Subject: Re: Closures syntax ?


On Feb 15, 2007, at 6:52 AM, Pedro Del Gallego wrote:
> Why the first and the second calls dosnt works and the third works?
> 1.1) loopN 5, {puts "hola"}   # compile error , parse error unexpected
> "{", expected "$"

Ruby doesn't expect a comma between the last standard argument and
the optional block argument.  Drop the comma.

> 1.2) loopN 5 {puts "hola"}    # compile error , unexpected tString.

The {} of the block is binding to the number 5, which is a syntax error.
You need to add parens to clarify your intent as in:

> 1.2) loopN (5) {puts "hola"}  # works

This would be more commonly written as:

   loopN(5) { puts "hola"}

Alternatively you can use do/end, which has low precedence

   loopN 5 do
     puts "hola"
   end


Gary Wright