Case Range Statement ..

["Jérôme M. Berger"]

Walter Bright wrote:
> Nick Sabalausky wrote:
>> "Walter Bright" <newshound1 at digitalmars.com> wrote in message
>>> It's handy when you want to prefix one expression to another, as in:
>>>
>>>    (foo(), x + 3)
>>
>> I guess I'm not familiar with that syntax. What does that do and for 
>> what purpose? 
> 
> They're called Comma Expressions, and the left operand is evaluated 
> first, its result discarded, then the right operand is evaluated and 
> forms the type and result of the Comma Expression.
> 
	I've always felt they were useless and confusing. What's the 
advantage of "y = (foo(), x + 3);" over "foo(); y = x+3;"?

> It's handy for things like rewriting ++e so it can be used more than 
> once but is only evaluated once:
> 
>    (tmp = ++e, tmp)

	Uh? How is that different from "++e"

		Jerome
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