The == comparison checks whether two values are equal
eql? checks if two values are equal and of the same type
equal? checks if two things are one and the same object.
How do I remember which is which ... The longer the operator, the more restrictive the test it performs
Example:
irb(main):013:0> val = 17
=> 17
irb(main):014:0> val == 17.0
=> true
irb(main):015:0> val.eql?(17.0)
=> false
irb(main):016:0> val.eql?(17)
=> true
irb(main):017:0> val.equal?(17)
=> true
(written 2006-12-14 16:49:47)
Subscribe to:
Post Comments (Atom)
Posts
1 comment:
There is also "===" operator, which is even more bizzare. 1 === [0..5] => true. In this case it checks if number is in range.
I really like ruby, but there are too many equality operators. It's just confusing.
Post a Comment