RE: what's wrong with this loop syntax?
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- Subject: RE: what's wrong with this loop syntax?
- From: "Gavin Kistner" <gavin.kistner@...>
- Date: Mon, 8 Jan 2007 17:08:28 -0700
From: Luiz Henrique de Figueiredo
> If assignment were an expression, what would be an interpretation
> for multiple assignment?
An array-table of all the values? A vararg ... thingy?
FWIW, Ruby treats assignments as expressions, and supports parallel
assignment (which is what I assume you mean by multiple assignment).
Internally it splats the array as part of multiple assignment:
irb(main):001:0> r = (a,b = 1,2)
=> [1, 2]
irb(main):002:0> c,d = r
=> [1, 2]
irb(main):003:0> c
=> 1
irb(main):004:0> d
=> 2
irb(main):005:0> r.class
=> Array
I'm not suggesting that Lua needs to treat assignment as expressions
(though I personally like that), just pointing out how another language
handles it as food for thought.