Knowing default parameter value

Question

I have a method definition like this:

def m1(a:Int, b:String, c:Val) end m = method(:m1)

Note that Int, String, Val are default values for a, b, c.

Is it possible to get this information from the method object m?

this topic may help you stackoverflow.com/questions/622324/… I tried by myself to get those values following Method(ruby-doc.org/core-2.2.0/Method.html#method-i-parameters) doc, but only what I got is whether argument is required or optional. — djaszczurowski
– djaszczurowski, Commented May 30, 2015 at 9:44
Do you want to get the types (classes) of the parameters in ruby? parameters cannot be bound to a type. More information: stackoverflow.com/questions/14575581/… — Vince V.
– Vince V., Commented May 30, 2015 at 11:27

Jörg W Mittag · Accepted Answer · 2015-05-30 12:03:13Z

No, this is not possible. It has been discussed numerous times on the ruby-core mailinglist, but it's simply not feasible. What should your proposed method return for something like this:

def m(p: if rand < 0.5 then Time.now else ENV['HOME'] end) end

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