CODEWITHSUNDEEP
ruby
grabury
grabury

Reputation: 5559

Create an array of arrays

I'm trying to create an array of arrays to be used in a JavaScript function.

Here is the format of the array that I'm trying to create:

[[1,1],[2,3],[3,6],[4,10],[5,15],[6,21]]

Here is the ruby code to create the array:

total=0
foo=[]
(1..6).each do |number|
   foo.push [number, total+=number]
end
puts foo

Here is the output of puts foo:

1
1
2
3
3
6
4
10
5
15
6
21

Any ideas how to output the correctly formatted array?

Upvotes: 0

Views: 121

Answers (3)

messivanio
messivanio

Reputation: 2311

Change puts foo to foo.inspect

total=0
foo=[]
(1..6).each do |number|
  foo.push [number, total+=number]
end
foo.inspect

Upvotes: 1

jh314
jh314

Reputation: 27802

You can use p foo to print out the array:

total=0
foo=[]
(1..6).each do |number|
  foo.push [number, total+=number]
end
p foo

This prints out: [[1, 1], [2, 3], [3, 6], [4, 10], [5, 15], [6, 21]]

Upvotes: 0

toniedzwiedz
toniedzwiedz

Reputation: 18543

If I understand that correctly, you want to output the array somewhere in a document to be interpreted as JavaScript by the browser.

When it comes to using Ruby objects in JavaScript, you can use the JSON gem.

require 'json'
#create the array
foo.to_json

should do the trick.

This also works for hashes and some other object types.

Upvotes: 2

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