Bug #1855: Random#int with Single-Element Ranges

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 1.9.2dev (2009-08-01 trunk 24343) [i686-linux]

[runpaint (Run Paint Run Run)]

=begin
Random#int accepts a Range argument from which it chooses values. If the range contains only one element, #int returns it on every call. This is unlikely to be what a user intended. I suggest that if the range's #begin value is equal to its #end value, an ArgumentError is raised.

prng = Random.new
=> #Random:0x9b446b0

4.times.map { prng.int(2...3) }
=> [2, 2, 2, 2]
=end

[runpaint (Run Paint Run Run)]

=begin
A range of Floats also behaves like a single-element Range, which is surely wrong.

prng = Random.new
=> #Random:0x9bb2160
4.times.map { prng.int(1.0..10.0) }
=> [1.0, 1.0, 1.0, 1.0]
=end

[nobu (Nobuyoshi Nakada)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

=begin
Applied in changeset r24670.
=end