a, b; nil; end => nil irb(main):004:0> puts RubyVM::InstructionSequence.disasm(method(:foo)) == disasm: <RubyVM::InstructionSequence:foo@(irb)>====================== local table (size: 4, argc: 3 [opts: 0, rest:
without affecting the definition of the method in the class from which it is inherited. Suppose class A defines a method m, and class B is a subclass of A and therefore inherits m. (Subclasses and inheritance are also explained in Chapter 7.) If you don’t want to allow instances of c...
one with the exclamation mark is a mutator method that alters the object in place. The Array class, for example, defines methods sort and sort!. In addition to these punctuation characters at the end of method names, you’ll notice punctuation characters at the start of Ruby variable names:...
When the Ruby interpreter has the name of a method and an object on which it is to be invoked, it finds the appropriate definition of that named method using a process known as “method lookup”or “method name resolution.” The details are not important here, but they are explained thoro...
This Ruby keyword indicates what object this method returns, if anything end This marks the end of the method definition. That was a word-by-word breakdown of our embiggen method. Here's the general components of a method definition: The name –how you will refer to the method. The naming...
The first argument is an array that defines the behavior of the method arguments, and the second one the behavior of the method result. Don't forget the trailing comma, because the method definition needs to be the last argument to thesigmethod. ...
Endless method definition is added. def square(x) = x * x Hash#except is now built-in. h = { a: 1, b: 2, c: 3 } p h.except(:a) #=> {:b=>2, :c=>3} Memory view is added as an experimental feature This is a new C-API set to exchange a raw memory area, such as...
Dynamic inspection of the hierarchy of method definitions on a Ruby object. Topics ruby definition module object metaprogramming class introspection method Resources Readme License View license Activity Stars 6 stars Watchers 1 watching Forks 3 forks Report repository Releases 4 tags Packag...
Endless method definition is added. def square(x) = x * x Hash#except is now built-in. h = { a: 1, b: 2, c: 3 } p h.except(:a) #=> {:b=>2, :c=>3} Memory view is added as an experimental feature This is a new C-API set to exchange a raw memory area, such as...
“messages” and are “sent to” receiver objects.) Within the body of a method, the keyword self refers to the object on which the method was invoked. If we don’t specify an object when invoking a method, then the method is implicitly invoked on self. ...