From: Roman Rytov <rrytov@...>
Date: 2002-12-03T22:58:15+09:00
Subject: Conditional block operations

Is there a way to filter results of EACH or COLLECT functions? Let's say
in

file.each do |line|
  a, b = line.split(pattern)
End

I wanna work it just over not empty lines or lines fitting some pattern.



Anotehr question is about COLLECT;

myarray.collect {|x| x + ", "}

I wanna execute only over specific emelents (let's say only odd ones or
all but last).

I know how to do both of them in a couple of lines but RUBY impresses my
by its brevity. Will it do it in this case too?


Roman Rytov