• Andy Valencia (15/15) Nov 03 2024 A function can be described as, say, private, or pure, or @nogc.
• Jonathan M Davis (17/30) Nov 03 2024 There really isn't one. Function attributes originally didn't have @ on

Andy Valencia <dont spam.me> writes:

A function can be described as, say, private, or pure, or  nogc.  
When does an annotation have an ' '?  Also, a function can be 
annotated

int myfunc(char *arg) pure {
}

Although I find:

pure int myfunc(char *arg) {
}

Also works.  So what annotations have  's, and when do they go 
with the function declaration, and when do they go after the 
argument declaration?

I don't need an exhaustive list, I'm much more interested in the 
underlying philosophy which assigns what to where.

Thank you!
Andy Valencia

Jonathan M Davis <newsgroup.d jmdavisprog.com> writes:

On Sunday, November 3, 2024 5:01:20 PM MST Andy Valencia via Digitalmars-d-
learn wrote:
 A function can be described as, say, private, or pure, or  nogc.
 When does an annotation have an ' '?  Also, a function can be
 annotated

 int myfunc(char *arg) pure {
 }

 Although I find:

 pure int myfunc(char *arg) {
 }

 Also works.  So what annotations have  's, and when do they go
 with the function declaration, and when do they go after the
 argument declaration?

 I don't need an exhaustive list, I'm much more interested in the
 underlying philosophy which assigns what to where.

There really isn't one. Function attributes originally didn't have   on
them, but newer ones got an   to avoid adding new keywords.

And in general, you can put function attributes on either side of a
function, and it doesn't matter. It's a matter of preference. The main
gotcha there is that if an attribute could affect either the function or the
return type, then it's going to affect the function if you don't use parens,
e.g.

struct S
{
    const int foo() { ... }
}

is going to make foo a const member function even though it looks like
you're saying that you want const int. To get that, you need

    const(int) foo() { ... }

- Jonathan M Davis