From: Ralph Shnelvar <ralphs@...32.com>
Date: 2009-11-24T00:30:56+09:00
Subject: Re: More on psuedo arrays; Better way?


MLK> x.send("x#{rand(i % N_X_METHODS)]".to_sym))

MLK> You don't need m at all.

Isn't there a significant cost in the overhead of doing the
string substitution
       "x#{rand(i % N_X_METHODS)]"
a million times?

>> Is there a more Ruby-ish way to do
>> anything else in the code, above?

MLK> Yes: use operators to make X look like a real array.

MLK> class X
MLK>   def []=(i, arg)
MLK>     puts "Hi " + i.to_s + arg.to_s
MLK>   end
MLK> end

MLK> N_X_METHODS = 20

MLK> 10.times do |i|
MLK>   x = X.new # should this be outside the loop?
MLK>   x[rand(i % N_X_METHODS)] = i
MLK> end

That is very very cool.  Thank you.