Type:
Class
Extends any Class to include json_creatable? method.
Classes in Ruby are first-class objects—each is an instance of class
Class.
Typically, you create a new class by using:
class Name # some class describing the class behavior end
When a new class is created, an object of type Class is initialized and assigned to a global
constant (Name in this case).
When Name.new is called to create a new object, the
new method in Class is run by default. This can
be demonstrated by overriding new in Class:
class Class
alias oldNew new
def new(*args)
print "Creating a new ", self.name, "\n"
oldNew(*args)
end
end
class Name
end
n = Name.new
produces:
Creating a new Name
Classes, modules, and objects are interrelated. In the diagram that follows, the vertical arrows represent inheritance, and the parentheses meta-classes. All metaclasses are instances of the class `Class'.
+---------+ +-...
| | |
BasicObject-----|-->(BasicObject)-------|-...
^ | ^ |
| | | |
Object---------|----->(Object)---------|-...
^ | ^ |
| | | |
+-------+ | +--------+ |
| | | | | |
| Module-|---------|--->(Module)-|-...
| ^ | | ^ |
| | | | | |
| Class-|---------|---->(Class)-|-...
| ^ | | ^ |
| +---+ | +----+
| |
obj--->OtherClass---------->(OtherClass)-----------...