14 August 2011

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,
From block

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


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