From: Ryan Davis <ryand-ruby@...>
Date: 2010-03-02T17:00:41+09:00
Subject: Re: Here's a filtered file/dir copy, FWIW.


On Mar 1, 2010, at 16:32 , Nick Sabalausky wrote:

> That "do |value|...end" is *not* a full function literal like I was 
> expecting it to be, but some kind of...like a closure of a portion of 
> the function it's contained in. More like using cross-function goto's 
> than calling a passed-in function.

That is exactly what a block is... a closure.

> So the cp_rx function I posted *does* work right, it was just that the 
> filter I was passing in to it was malformed and returning from the top 
> few entires in the call stack instead of just the top one.

exactly.

The proper way to write your reproduction is not:

>  callWith123 do |value|
>    if value == 2 then
>      return false
>    end
>    true
>  end

but:

>  callWith123 do |value|
>    value != 2
>  end

And again, you need to ACTUALLY write tests. /soapbox