From: Joel (joel_at_[hidden])
Date: 2004-11-27 00:32:20
Zhuo Qiang wrote:
> what about _a = var(arg1) which IMO is more explicit
I considered that syntax too. Unecessarily verbose, IMO.
The argN (like var(x)) already has reference semantics.
That is why you can write:
for example, instead of the more verbose:
IMO, argN should always be implicitly an L-value, for
>>>though the following code gives what I expect:
>>> int i = 1;
>>> let(_a = val(_1))
>>> cout << --_a << ' '
>>> cout << i << endl;
>>Exactly! args are L-values. vals are R-values.
>>I'll emphasize that in the docs. Mind if I steal your example?
> Sure! As you wish.
-- Joel de Guzman http://www.boost-consulting.com http://spirit.sf.net
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