Random integers

[Clayton]

How would you manage this? I've been playing around in irb, and found rand(max), but I'd like to be able to have a defined range of numbers to randomize... Is there a pre-defined random integers method that does this, or would I have to create my own and seed it with the time or some such this?

[Cervantes]

You mean something like Rand.Int in Turing, where you provide a lower bound and a higher bound? Sure:

code:

def rand_range(low, high)     rand(high - low) + low end

[Clayton]

hmm, I was thinking of something exactly like that, but I thought I had seen something wrong with it, and now that I think about it, I can't even remember what that was. Thanks Cervantes

[wtd]

code:

irb(main):012:0> class Range irb(main):013:1>    def random_choice irb(main):014:2>       rand(last - first) + first irb(main):015:2>    end irb(main):016:1> end => nil irb(main):017:0> (1..10).random_choice => 8 irb(main):018:0> (1..10).random_choice => 8 irb(main):019:0> (1..10).random_choice => 9 irb(main):020:0> (1..10).random_choice => 1 irb(main):021:0> (1..10).random_choice => 5 irb(main):022:0>

[Clayton]

Well, I've learned my bit of Ruby for the day. I had no idea there was a Range class. that's damn handy thanks wtd.