From: Marc Heiler <shevegen@...>
Date: 2012-02-07T03:54:02+09:00
Subject: Using _ like in Scala?

fruits = %w( apple banana orange )

fruits.each { puts _ }

vs

fruits.each { |f| puts f }

I was told that scala uses _ to denote as default block argument (the
first one. I am not sure what else scala does)

Could _ be used in Ruby to allow the same?

The question is actually a bit larger. I am wondering whether Ruby could
reserve a set of key-names for variables.

In this example it could use _ but it could perhaps make better use of
it too. Perhaps even something like:

array_fruits = %w( apple banana orange )

^^^ And the above would keep the variable permanently as array type.
(With the convention being that the leading name array_ would indicate
that)

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