is there any dry way to get the index of an element in a range without converting the range into an array ?
("A".."Z").each do | alpha |
-> puts alpha.index (?) or something like that .... <-
end
is there any dry way to get the index of an element in a range without converting the range into an array ?
("A".."Z").each do | alpha |
-> puts alpha.index (?) or something like that .... <-
end
Hi --
On Thu, 28 Dec 2006, Josselin wrote:
is there any dry way to get the index of an element in a range without converting the range into an array ?
("A".."Z").each do | alpha |
-> puts alpha.index (?) or something like that .... <-
end
("A".."Z").each_with_index do |alpha,i|
puts i
end
David
--
Q. What is THE Ruby book for Rails developers?
A. RUBY FOR RAILS by David A. Black (http://www.manning.com/black\)
(See what readers are saying! http://www.rubypal.com/r4rrevs.pdf\)
Q. Where can I get Ruby/Rails on-site training, consulting, coaching?
A. Ruby Power and Light, LLC (http://www.rubypal.com)
thanks a lot.. another part of my book to read before year end ;-))) all 'each_ .... ' statements
joss
On 2006-12-28 15:19:43 +0100, dblack@wobblini.net said:
Hi --
On Thu, 28 Dec 2006, Josselin wrote:
is there any dry way to get the index of an element in a range without converting the range into an array ?
("A".."Z").each do | alpha |
-> puts alpha.index (?) or something like that .... <-
end("A".."Z").each_with_index do |alpha,i|
puts i
endDavid
Here's another one
irb(main):005:0> require 'enumerator'
=> true
irb(main):010:0> (1..10).to_enum(:each_with_index).find {|a,b| a==2}[1]
=> 1
robert
On 28.12.2006 16:05, Josselin wrote:
On 2006-12-28 15:19:43 +0100, dblack@wobblini.net said:
Hi --
On Thu, 28 Dec 2006, Josselin wrote:
is there any dry way to get the index of an element in a range without converting the range into an array ?
("A".."Z").each do | alpha |
-> puts alpha.index (?) or something like that .... <-
end("A".."Z").each_with_index do |alpha,i|
puts i
endDavid
thanks a lot.. another part of my book to read before year end ;-))) all 'each_ .... ' statements