DIP 1020--Named Parameters--Community Review Round 2

[rikki cattermole]

On 12/09/2019 11:25 PM, Yuxuan Shui wrote:
> On Thursday, 12 September 2019 at 09:17:54 UTC, rikki cattermole wrote:
>> On 12/09/2019 4:57 AM, Paul Backus wrote:
>>> [...]
>>
>> There is no reason to believe that Phobos cannot be updated nor other 
>> existing libraries.
>>
>> Deprecate old prototype.
>>
>> Add new prototype.
>>
>> Old prototype calls new prototype.
> 
> Does that essentially mean we are going to rename all the functions?

Of course not.

Overloading of symbols is a great thing ;)

We only need to do it incrementally for functions/templates where it 
makes sense. Not everything would benefit from named parameters.

E.g.

void func(int something, int flag = 0)

becomes

deprecated("Use named arguments version")
void func(int something, int flag) {
	func(something, flag: flag);
}

void func(int something, @named int flag = 0)