Project

General

Profile

Bug #12821

Updated by nobu (Nobuyoshi Nakada) almost 3 years ago

Hi,

I saw a bit strange behavior (at least for me) with the code below; an object given as an argument to a method with a default value and a keyword argument becomes `Hash` Hash class if the object has '`to_hash`' 'to_hash' method with ruby >= 2.2, but it is not converted to `Hash` Hash with ruby 2.1.
I expected the behavior of ruby 2.1.
Is this a bug or expected behavior of ruby >= 2.2?

I tested both on Linux x86_64 (CentOS 6) and Mac OS X 10.11.6.

~~~ ruby
class Test1
end

class Test2
def to_hash
{0 => [0, 1]}
end
end

def argtest1 foo, bar: nil
p foo.class
end

def argtest2 foo = nil, bar: nil
p foo.class
end

test1 = Test1.new
test2 = Test2.new

argtest1(test1) # => Test1
argtest1(test2) # => Test2

argtest2(test1) # => Test1
argtest2(test2) # => Hash (2.2.5p319, 2.3.1p112, 2.4.0-preview2), Test2 (2.1.10p492)


~~~

Regards,
Hiroyuki Tanaka

Back