Correct way to populate an Array with a Range in Ruby

ruby syntax
Willbill picture Willbill · Oct 10, 2008 · Viewed 131.6k times · Source

I am working through a book which gives examples of Ranges being converted to equivalent arrays using their "to_a" methods

When i run the code in irb I get the following warning

 warning: default `to_a' will be obsolete

What is the the correct alternative to using to_a?

are there alternate ways to populate an array with a Range?

Answer

Zamith picture Zamith · Jul 5, 2011

You can create an array with a range using splat,

>> a=*(1..10)
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

using Kernel Array method,

Array (1..10)
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

or using to_a

(1..10).to_a
=> [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

Related questions

Ruby - test for array

What is the right way to: is_array("something") # => false (or 1) is_array(["something", "else"]) # => true (or > 1) or to get the count of items in it?

Read More
In Ruby, how do I skip a loop in a .each loop, similar to 'continue'

In Ruby, how do I skip a loop in a .each loop, similar to continue in other languages?

Read More
Case statement with multiple values in each 'when' block

The best way I can describe what I'm looking for is to show you the failed code I've tried thus far: case car when ['honda', 'acura'].include?(car) # code when 'toyota' || 'lexus' # code end I've got about 4 or 5 different when …

Read More