From: Dave Thomas <Dave@...>
Date: 2001-08-04T00:17:05+09:00
Subject: [ruby-talk:19076] Re: a+, a++, a+++, a++++, a+ ---, a + ***

"Dat Nguyen" <thucdat@hotmail.com> writes:

> a = 0��������������� # => 0
> 
> a+ 1���������������� # => 1
> 
> a++ 1�������������� # => 1
> 
> a+++ 1������������ # => 1
> 
> a+ ++++++ 1�� # => 1
> 
> a + --- 3���������� #=>
> 
> a + *** 3�������� #=> SyntaxError: compile error
> (irb):28: parse error
> 
> Why?

Because '+' is both a unary and a binary operator, and '*' isn't.

Now, for extra credit, why is this OK

  a+ 1

and this isn't:

  a +1

Regards


Dave