I want to convert certain letters to numbers on a gets.chomp..
my initial approach was this----
words = gets.chomp
new = words.each {|p| p.gsub(/[h]/, '00')}
puts new
#####
however this doesnt work the miracle 
new = words.gsub(/[h]/, '00')
puts new
##### this works perfectly, but the problem occurs if i want to gsub
more than one character as if i have new = another.gsub then puts new
only outputs the last gsub.
Ideas?
Thanks!
--
Posted via http://www.ruby-forum.com/.
Normally, you'd use String#tr for something like this, but since you
want to replace single characters with multiple characters, you might
try something like this:
subs = {
'h' => '00',
'i' => '01',
'j' => '02',
}
new = gets.chomp
subs.inject(new) {|acc, sub| acc.gsub(sub[0], sub[1])} unless new.nil?
For something more similar to what you're already doing, you can chain
the #gsub calls together:
new.gsub('h', '00').gsub('i', '01').gsub('j', '02') unless new.nil?
This may or may not run faster than my first solution, but the first
is easier to code/maintain.
Jeremy
On Sep 27, 12:18 pm, Michael Linfield <globyy3...@hotmail.com> wrote:
I want to convert certain letters to numbers on a gets.chomp..
my initial approach was this----words = gets.chomp
new = words.each {|p| p.gsub(/[h]/, '00')}puts new
#####
however this doesnt work the miraclenew = words.gsub(/[h]/, '00')
puts new
##### this works perfectly, but the problem occurs if i want to gsub
more than one character as if i have new = another.gsub then puts new
only outputs the last gsub.Ideas?
Thanks!
--
Posted viahttp://www.ruby-forum.com/.
Oops...made a couple mistakes in the assignment (or lack thereof):
subs = {
'h' => '00',
'i' => '01',
'j' => '02',}
words = gets.chomp
new = subs.inject(words) {|acc, sub| acc.gsub(sub[0], sub[1])} unless
new.nil?
or:
words = gets.chomp
new = words.gsub('h', '00').gsub('i', '01').gsub('j', '02') unless
new.nil?
On Sep 27, 1:43 pm, "yer...@gmail.com" <yer...@gmail.com> wrote:
Jeremy
Sorry, more mistakes. I'm giving up after this.
subs = {
'h' => '00',
'i' => '01',
'j' => '02',
}
words = gets.chomp
new = subs.inject(words) {|acc, sub| acc.gsub(sub[0], sub[1])} unless
words.nil?
or:
words = gets.chomp
new = words.gsub('h', '00').gsub('i', '01').gsub('j', '02') unless
words.nil?
Hopefully that's right.
Jeremy
yermej@gmail.com wrote:
Sorry, more mistakes. I'm giving up after this.
subs = {
'h' => '00',
'i' => '01',
'j' => '02',
}words = gets.chomp
new = subs.inject(words) {|acc, sub| acc.gsub(sub[0], sub[1])} unless
words.nil?or:
words = gets.chomp
new = words.gsub('h', '00').gsub('i', '01').gsub('j', '02') unless
words.nil?Hopefully that's right.
Jeremy
Haha no worries, thanks a ton -- didnt know you could chain gsubs but
now i think ill go with the inject method cause yes you were right when
you talked about maintaining it.
--
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