Using define_method to create a method that takes arguments

ruby-talk
1

How does one use define_method to create a method that can take
arguments?

Is that possible?

Wes

···

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Posted via http://www.ruby-forum.com/.

2

Wes Gamble wrote:

How does one use define_method to create a method that can take arguments?

Is that possible?

Wes

Use a block that has arguments:

irb(main):003:0> class << self; define_method :foo do |x, *y| p x, y; end; end
=> #<Proc:0xb7ca3f20@(irb):3>
irb(main):004:0> foo 1,2,3
1
[2, 3]
=> nil

···

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       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407

3

Wes Gamble wrote:

How does one use define_method to create a method that can take
arguments?

Is that possible?

#!/usr/bin/ruby -w

class A
   define_method(:trythis) { |a,b,c| puts a,b,c }
end

a = A.new

a.trythis("one","two","three")
one
two
three

a.trythis()
in `trythis': wrong number of arguments (0 for 3) (ArgumentError)

···

--
Paul Lutus
http://www.arachnoid.com