From: shevegen@...
Date: 2015-01-09T02:23:19+00:00
Subject: [ruby-core:67450] [ruby-trunk - Feature #10720] [Open] A proposal for something like: attr_reader :foo? - with the trailing '?' question mark

Issue #10720 has been reported by Robert A. Heiler.

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Feature #10720: A proposal for something like:   attr_reader :foo?  - with the trailing '?' question mark
https://bugs.ruby-lang.org/issues/10720

* Author: Robert A. Heiler
* Status: Open
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
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Hi guys,

Sorry to burden you with another suggestion, no problem
if it is not accepted, I wanted to just make it. :-)

We have a way to define reader methods easily, such 
as in:

    attr_reader :foo

This should be equivalent to:

    def foo
      @foo
    end

I love query methods ending with ?, so I often also use
something like:

    def foo?
      @foo
    end

What if there is a programmatic way to define these?

For instance, like:

    attr_reader? :foo

This might lead to confusion perhaps, so a way such as:

    attr_question :foo

or

    attr_query :foo

or perhaps even better

    attr_reader :foo?

The latter variant does not work:

    foo.rb:20:in `attr_reader': invalid attribute name `foo?' (NameError)

Perhaps :foo? could query the instance variable @foo
instead here? Currently attr_reader :foo? is invalid 
but :foo? is a valid Symbol in itself.

At any rate, thanks for reading, may the year 2015 be
great for all ruby devs and ruby users!



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