From: Glenn <glenn_ritz@...>
Date: 2008-09-17T04:13:47+09:00
Subject: Re: Passing a method call into a method

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Hi,=0A=0AThanks for the help with my question.=A0 All three solutions are g=
reat.=0A=0ASorry I wasn't more clear describing the problem.=A0 I'll try to=
 be more clear when I ask another question in the future.=0A=0AI have to ad=
mit that I don't think I understand the method below.=A0 I tried it out and=
 see that it works, but don't necessarily see how it works yet.=A0 I will l=
ook at it some more.=0A=0AThanks again,=0A=0AGlenn=0A=0A=0A=0A----- Origina=
l Message ----=0AFrom: William James <w_a_x_man@yahoo.com>=0ATo: ruby-talk =
ML <ruby-talk@ruby-lang.org>=0ASent: Sunday, September 14, 2008 4:02:54 PM=
=0ASubject: Re: Passing a method call into a method=0A=0AOn Sep 14, 8:18 am=
, Glenn <glenn_r...@yahoo.com> wrote:=0A> [Note:=A0 parts of this message w=
ere removed to make it a legal post.]=0A>=0A> Hi,=0A>=0A> I am trying to fi=
gure out how to pass a method call into a method.=0A>=0A> I wrote a generic=
 method that call be called on an array of numbers, and returns an array of=
 the index values in the receiver that meet a specified condition:=0A>=0A> =
class Array=0A>=A0 def hash_of_indexes=0A>=A0 =A0 if self.empty?=0A>=A0 =A0=
 =A0 'The array is empty.'=0A>=A0 =A0 else=0A>=A0 =A0 =A0 h =3D {}=0A>=A0 =
=A0 =A0 self.each_with_index { |e, i| h.include?(e.to_f) ? h[e.to_f] << i :=
 h[e.to_f] =3D [i] }=0A>=A0 =A0 =A0 h=0A>=A0 =A0 end=0A>=A0 end=0A=0A=0Acla=
ss Array=0A=A0 def hash_of_indexes=0A=A0 =A0 h =3D {}=0A=A0 =A0 each_with_i=
ndex{ |e,i|=0A=A0 =A0 =A0 e =3D e.to_f=0A=A0 =A0 =A0 h[e] =3D Array( h[e] )=
 << i }=0A=A0 =A0 h=0A=A0 end=0Aend
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