I'm looking at Hash docs for has_value? and value?. However the link for value? leads to duplicate information about has_value?.

value? seems to work identically to has_value? (Ruby 3.02).

Does this mean value? is becoming deprecated or is this a documentation error?

CodePudding user response：

You can check if they are identical by comparing their method objects:

Hash.instance_method(:value?) == Hash.instance_method(:has_value?)
#=> true

UnboundMethod#== returns true if the methods refer to the same implementation.

Does this mean value? is becoming deprecated or is this a documentation error?

It seems to be a documentation error. The docs from the official website are more explicit regarding the alias:

https://docs.ruby-lang.org/en/3.0.0/Hash.html#method-i-has_value-3F

has_value?(value) → true or false

Returns true if value is a value in self, otherwise false.

Also aliased as: value?

However, the entry for value? doesn't have a heading: (the bold value?(value) → true or false part is missing)

https://docs.ruby-lang.org/en/3.0.0/Hash.html#method-i-value-3F

Returns true if value is a value in self, otherwise false.

Alias for: has_value?