Apply function to each element in array and store result in an array

Question

I have a function toWords which converts a integer into a word

e.g. toWords(500, tableWords) gives fivehundred

I have an array of numbers h = (1..999).to_a, and I want to go through this array and convert each number into a word and store it in a new array. My current attempt to do this is:

h = (1..999).to_a
Lh = h.each do |i| toWords(i, tableWords) end

However, the contents of Lh is simply the integers from 1 to 999 and not the output of my toWords function. How do I do this? I'm thinking of something along the lines of sapply in R.

Even better is if my new array Lh can have two columns, the first column containing the integers in number format, and the second column would be the corresponding number in words.

Thank you!

Array.map

user703016
– user703016

2013-03-10 08:09:53 +00:00
Commented Mar 10, 2013 at 8:09 — user703016
– user703016, Commented Mar 10, 2013 at 8:09

Matthew T. Staebler · Accepted Answer · 2013-03-10 08:20:38Z

5

To get your two columns, you can do the following

(1..999).map {|x| [x, toWords(x, tableWords)]}

answered Mar 10, 2013 at 8:20

Matthew T. Staebler

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mchangun · Accepted Answer · 2013-03-10 08:16:55Z

2

As per Cicada's comment, the answer is:

Lh = h.map{|x| toWords(x, tableWords)}

answered Mar 10, 2013 at 8:16

mchangun

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