On Wednesday, 18 June 2014 at 20:55:36 UTC, cym13 wrote:
Hello,
I see a lot of functions and other stuff with a '!' in the name
such as 'bitfields!' or 'ctRegex!'. What does it mean exactly?
In
scheme, we use such a convention to warn that a function is not
pure, but I don't see the point of using it that way in D as
there are other way to express it.
Moreover, I'm looking for a style guide of D, something like the
PEP8 for python. Is there anything like that?
Thanks!
The ! specifies that a template argument list follows.
auto fun(T)(T a, T b) { return a * b; }
void main()
{
// fun can be called using several different ways:
fun!(int)(1, 2); // Specifying the template arguments
fun!int(1, 2); // If there is only one template argument the
// parens can be omitted
fun(1, 2); // IFTI can be used to figure out the types
for you
}
There is a style guide on the website:
http://dlang.org/dstyle.html
Personally I just consider this a Phobos contributor style guide
and not like a PEP8 style guideline.
