On 31/03/2011 18:37, Jonathan M Davis wrote:
On 2011-03-31 06:35, Kagamin wrote:
Ary Manzana Wrote:
I just hate it when you have to write too much

hasMember!(S, "m")
is only 1 character longer than
S::hasMember("m")

not too much for me

And hasMember!(S, "m") is actually consistent with the rest of the language
and straight forward to read for those who know the language.
S::hasMember("m") just adds more syntax where there's no need for it, and
makes it so that there's that much more syntax to learn and keep straight.

- Jonathan M Davis

I thought the :: syntax seemed pretty intuitive (keystroke savings never entered into my evaluation), but I seem to be in a minority on that.

After re-reading the previous discussion of __traits and its proposed replacement, however, I am reminded of an important point: language features should not have special powers that can't be replicated in client code.

So, with that in mind, I have to agree that using templates for things like hasMember has to be the way forward.

Having templates that are internal to the complier or that simply forward to __traits seems a bit odd to me. I think I'd rather see __traits simplified and more of work moved into the library, which may make it more versatile and easier to extend (pure speculation ^^).

Right, I'm off to go and squirrel all my uses or traits away inside templates, I have a sneaking suspicion that it is going to make some big improvements in readability ^^

A...

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