From: Bertram Scharpf <lists@...>
Date: 2006-03-13T07:36:02+09:00
Subject: Re: Proposal: String#notempty?

Hi Evan,

Am Montag, 13. M�r 2006, 04:02:32 +0900 schrieb Evan Phoenix:
> On 3/12/06, Bertram Scharpf <lists@bertram-scharpf.de> wrote:
> > I oftenly use `Numeric#nonzero?'. Actually, I miss its
> > equivalent, a method maybe `String#notempty?', returning
> > the string if it has a length and nil otherwise.
> 
> How is this better than doing "not str.empty?".

  nickname.notempty? or forename
  vs.
  nickname.empty? ? forename : nickname

This is especially convienient when nickname is non-trivial
(e.g. a database query). Further, it's pretty short. Maybe
not everyone's first choice but always mine. Another
example:

  gets.chomp.notempty? || default

A common case with `nonzero?' is:

  (a.major <=> b.major).nonzero? or a.minor <=> b.minor

> Also, the method should really return false instead of nil.

`nonzero?' does return `nil'.

Bertram


-- 
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de