From: sempsteen <sempsteen@...>
Date: 2006-11-26T06:53:52+09:00
Subject: Re: coding practise

ok, i get it.
so when we invoke Hash#has_key? it does not responde by calling and
getting the result of Hash#[] method, like if [] responds nil has_key
gives false.

> It also allows for good code readability - 'has_key?': It's pretty
> obvious to, e.g., a reviewer what the code wants to do.

Yes, i agree with you and i also want to code in the same way. I want
to learn the best way of doing this.
Let's say that i want to learn the answer to the ultimate question of
life, the universe and everything.
i don't want to make two calls that first one returns true or false
after 7.5 million years and second one returns the answer another 7.5
million years later if first one returns true.

puts everything.answer if everything.has_answer?