How do I split an array into a bunch of strings in Ruby?

Question

This method accepts a list of URLs:

Magick::ImageList.new("img1url", "img2url", "img3url")

I have this string "url1, url2, url3".

How can I feed the above method my list as separate arguments? I tried:

urls = urls.split(',')
Magick::ImageList.new(urls) # fails. It produces an array.

# fails. It produces "'img1url','img2url'".
# The comma is part of the string, but it should split method arguments.
urls = urls.split(',').join("','")
Magick::ImageList.new(urls)

-1. What is `urls`? What is the relation between `"url1, url2, url3"` and `"img1url", "img2url", "img3url"`? — sawa, May 24 '13 at 14:08
@sawa who cares? The question is clear enough. I doubt anyone else is having difficulty connecting the dots. — dee, May 25 '13 at 18:11

score 4 · Accepted Answer · answered May 24 '13 at 14:07

4

* can expand the array to arguments:

urls = urls.split(', ')
Magick::ImageList.new(*urls)

answered May 24 '13 at 14:07

Ry-

218,210
55
464
476

`Magick::ImageMagickError: no data returned 'http://7.jpg,8.jpg,9.jpg'` -- I cut short the urls. If I pass the images in individually, they work. The comma is still appearing inside the string... – dee May 24 '13 at 14:15
@dee: Oh, take out the space in `', '` then. Your sample string gave me the impression that they were separated by a space and a comma. – Ry- May 24 '13 at 14:19

How do I split an array into a bunch of strings in Ruby?

1 Answers1