Blocks in Ruby

Blocks are one of the coolest things to have when you are coming from a language like C++ or Java. Say you are writing a function and you want to have some functionality within it which should be handled totally by the caller. Well, blocks come for the rescue.

Say I have a method like this.

There is a sweet keyword in Ruby to replace the second line of the test_method called yield.


And you can now make a call like,


Would output,
start
From block
end

Nothing great if you already are a ruby nerd. But for Java blokes, blocks are something to think for.

Cheers!
Braga