Class: FalseClass

Alias for TrueClass#==. Returns whether self and other are the same object:

object = Object.new
object == object     # => true
object == Object.new # => false

Here in class Object, #==, #equal?, and #eql? are the same method. A subclass may override #== to provide class-specific meaning.

Unlike #==, the #equal? method should never be overridden by subclasses as it is used to determine object identity (that is, a.equal?(b) if and only if a is the same object as b):

obj = "a"
other = obj.dup

obj == other      #=> true
obj.equal? other  #=> false
obj.equal? obj    #=> true

The #eql? method returns true if obj and other refer to the same hash key. This is used by ::Hash to test members for equality. For any pair of objects where #eql? returns true, the #hash value of both objects must be equal. So any subclass that overrides #eql? should also override #hash appropriately.

For objects of class ::Object, #eql? is synonymous with #==. Subclasses normally continue this tradition by aliasing #eql? to their overridden #== method, but there are exceptions. ::Numeric types, for example, perform type conversion across #==, but not across #eql?, so:

1 == 1.0     #=> true
1.eql? 1.0   #=> false

Alias for #to_s.