Re: Proposal for easier syntax for define-unless-already-defined pattern

Newsgroups	comp.lang.ruby
Date	2014-07-29 09:44 -0700
References	<fedb7003-f5e4-457b-9120-1ad937a9eedc@googlegroups.com>
Message-ID	<bf498877-a244-4b0d-bab1-c4820534e7d7@googlegroups.com> (permalink)
Subject	Re: Proposal for easier syntax for define-unless-already-defined pattern
From	Eugene Gilburg <eugene.gilburg@gmail.com>

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Forgot to add, the `?=` syntax should be context-sensitive to primitive types. E.g.

some_hash[:some_member] ?= 'some_value'

Should check for `some_hash.key?(:some_value)`

Which will be assigned if the key does not exist, but not be assigned if the key exists but has `false` or `nil` value (another difference with the `||=` pattern).

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Proposal for easier syntax for define-unless-already-defined pattern Eugene Gilburg <eugene.gilburg@gmail.com> - 2014-07-29 09:40 -0700
  Re: Proposal for easier syntax for define-unless-already-defined pattern Eugene Gilburg <eugene.gilburg@gmail.com> - 2014-07-29 09:44 -0700
    Re: Proposal for easier syntax for define-unless-already-defined pattern Robert Klemme <shortcutter@googlemail.com> - 2014-07-30 19:41 +0200
  Re: Proposal for easier syntax for define-unless-already-defined pattern Robert Klemme <shortcutter@googlemail.com> - 2014-07-30 19:45 +0200

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