lfx_cool的专栏

Method parameters are considered to be variables local to that method. Block parameters are assigned values when the block is invoked.

A return from inside a block that’s still in scope acts as a return from that scope. A return from a block whose original context is not longer valid raises an exception (LocalJumpError or ThreadE...

Correct Understand: "extend" adds methods from a module into a class as class methods. "include" adds methods from a module into a class as instance methods. It is quite easy to demonstrate thi...

问： Hi I have code like class A class

The "include" statement is for including a module into a class: 1. module Bar 2. end 3. 4. class Foo 5. include Bar 6. end The "require" statement loads a ruby file. ...

we specified the arguments as *args, meaning “collect the actual parameters passed to the method into an array named args.” 比如： def some_method(arg1, arg2, *args) ... end 调用some_method(1,2,3,4...