How to read this signature? (writeTo in DIP9)

Graham Fawcett fawcett at
Fri Nov 19 11:46:08 PST 2010

On Fri, 19 Nov 2010 14:43:03 -0500, bearophile wrote:

> Graham Fawcett:
>> void writeTo(scope delegate(in char[] data) sink,
>> 	     string format = null) const
>> // from
>> Particularly, how does "scope" modify the delegate, and what is the
>> meaning of the trailing "const"?
> "scope" means that the sink delegate is not a true closure, its
> outer scope is never allocated on the heap. "const" member functions
> means that inside it the "this" is const, so writeTo() can't modify
> the class/struct attributes.

Ah! Thanks very much, bearophile!


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