• Sam Hu (1/1) Jun 24 2009 Yes,__traits did not stole my girl friend,but isn't better to name it tr...
• Daniel Keep (9/10) Jun 24 2009 It's not in a module because it's a keyword. You don't find "function"
• Sam Hu (4/4) Jun 24 2009 Thank you so much for your help!
• bearophile (4/6) Jun 25 2009 Maybe Java programmers. D programmers need that functionality often.

Sam Hu <samhudotsamhu gmail.com> writes:

Yes,__traits did not stole my girl friend,but isn't better to name it trait?
And I have thought I can find it in trait moudle but I was wrong.

Daniel Keep <daniel.keep.lists gmail.com> writes:

Sam Hu wrote:
 Yes,__traits did not stole my girl friend,but isn't better to name it trait?
And I have thought I can find it in trait moudle but I was wrong.

It's not in a module because it's a keyword.  You don't find "function"
defined in any library.

As for being called __traits instead of traits, I suspect that's for at
least one of two reasons:

1. so it won't invalidate existing code that uses the identifier
"traits", and/or

2. because it's not something regular programmers should have to use; it
should be used to build a higher-level API using templates.

Sam Hu <samhudotsamhu gmail.com> writes:

Thank you so much for your help!

Just feel not so good that there are so many "__" in the code when making use
of reflection from __traits.

Regards,
Sam

bearophile <bearophileHUGS lycos.com> writes:

Daniel Keep:
 2. because it's not something regular programmers should have to use; it
 should be used to build a higher-level API using templates.

Maybe Java programmers. D programmers need that functionality often.

Bye,
bearophile