In my app, I have a textfield in which the user enters something like this
"1,2,3,4"
which gets stored to the database. Now, when I want to use the inner numbers, i have two options:
"1,2,3,4".split(',')
OR
string.scan(/\d+/) do |x|
a << x
end
Both ways i get an array like
["1","2","3","4"]
and then i can use the numbers by calling to_i on each one of them.
Is there a better way of doing this, that converts
"1,2,3" to [1,2,3] and not ["1","2","3"]
str.split(",").map {|i| i.to_i}
but the idea is same to you....
str.split(',').map(&:to_i)
You can do this.
t = "1,2,3,4".split(',').collect{|n| n.to_i}
In Ruby 1.9.3 you can do the following:
No space after the comma:
"1,2,3,4".split(',') # => ["1","2","3","4"]
With the space after the comma:
"1,2,3,4".split(', ') # => ["1,2,3,4"]
No space after the comma:
"1,2,3,4".split(',').map(&:to_i) # => [1,2,3,4]
With a space after the comma, you are going to get this:
"1,2,3,4".split(', ').map(&:to_i) # => [1]
You can do it by following method:- "1,2,3,4".split(/,/)
This will give you following result:-
["1", "2", "3", "4"]
Thanks....
