How to specify method default argument using define_method?
ruby
Solution
This actually just works like you would expect in Ruby 1.9!
define_method :m do |a = false|
end
If you need 1.8 compatibility, but you don't necessarily need a closure to define your method with, consider using `class_eval` with a string argument and a regular call to `def`:
class_eval <<-EVAL
def #{"m"}(a = false)
end
EVAL
Otherwise follow the suggestion in the thread that philippe linked to. Example:
define_method :m do |*args|
a = args.first
end
Problem
`define_method` could be used to define methods: ``` define_method(:m) do |a| end ``` which is equivalent to the following: ``` def m(a) end ``` However, what is the equivalent form of the following using `define_method`: ``` def m(a=false) end ``` Note that I'd need to be able to call `m()` without giving any argument.