Fastest JSON parser in the world is a D project

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On Wednesday, 28 October 2015 at 13:56:27 UTC, Adam D. Ruppe 
wrote:
> On Tuesday, 27 October 2015 at 14:00:07 UTC, Martin Nowak wrote:
>> Yikes, this is such an anti-pattern.
>> https://github.com/rejectedsoftware/vibe.d/issues/634
>
> Every time I use opDispatch, I add an if(name != "popFront") 
> constraint, at least (unless it is supposed to be forwarding). 
> It helps with this a lot and think everyone should do it.

I would go even farther and say that one should never define 
opDispatch without a template constraint limiting which members 
can be dispatched on. It may be a bit radical but we could even 
go as far as outright deprecating unconstrained opDispatch.

//Okay
auto opDispatch(string member)()
if (member == "get" || isVectorSwizzle!member)
{
     //...
}

//Deprecated
auto opDispatch(string member)()
{
     //...
}