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Ruby

Posted by Rob Munoz
Rob Munoz
Courses Plus Student 586 Points

Datatype in Ruby Array or Other?

I'm having trouble determining what the datatype of the following variables are: A, B, C. Not too familiar with Regex or split so that could be part of the issue. The main issue here is that I cannot split C. Do I have to push the data from B to an array before that takes place and if so, how should I go about that?

ReadPath = File.read("ReadFile.txt")

A = ReadPath

B = A.split(/[\s,']/)

C = B.select.each_with_index { |str, i| i.even? }

C.split(/[\s,']/)

E = B.select.each_with_index { |str, i| i.odd? }

Rob Munoz
Rob Munoz
Courses Plus Student 586 Points

I'm guessing part of the problem is the datatype conversion:

A = string, B = string, C = array, .split is not an array method?

2 Answers

Brandon Barrette
Brandon Barrette
20,485 Points

I recommend that you call

A.class, B.class, etc

This will tell you if it is a string, array, etc.

I'm guessing you are trying to get just the even indices, here's a good explanation:

http://stackoverflow.com/questions/1614147/odd-or-even-entries-in-a-ruby-array

Rob Munoz
PLUS
Rob Munoz
Courses Plus Student 586 Points
Rob Munoz
Rob Munoz
Courses Plus Student 586 Points

Thanks so much Brandon!

I called class on A, B, C etc... and the split method changes the datatype from string to an array. But it is hard to imagine that there isn't another method like split used on arrays to do the same thing! I'm wondering what that is, or how I might improve my implementation...

And that is actually where I got the method for select by index, so excellent find if I do say so myself!