Re: DIP1004: Inherited Constructors
On 11/29/2016 12:04 PM, Arafel wrote:
> I think I might be a bit late to the party, and I'm still quite new in
> D... but wouldn't a variadic template constructor work? The usual rules
> of templates would still let you override a constructor if needed.
>
> ---
> class A {
> this() { }
> this(int a) { }
> }
> class B : A {
> // Here we inherit all of A's constructors.
> this(Args...)(Args args) {
> super(args);
> }
> this(string s) { }
> }
> void main() {
> B b1 = new B(42);
> B b2 = new B("foo");
> }
> ---
>
> I've been playing with it, and the only problems I can see are with
> specialization and casting (i.e. B defines this(float), but you want to
> call A's this(int), the int will be promoted to float and B's version
> will be used). A way of disabling them would be needed, though...
> perhaps assert(0)?
Have just answered a similar question in a PR thread:
https://github.com/dlang/DIPs/pull/42#issuecomment-263562276
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Re: DIP1004: Inherited Constructors
On 11/28/2016 04:57 AM, rikki cattermole wrote:
> On 28/11/2016 3:38 PM, Dicebot wrote:
>> DIP 1004 is merged to the queue and open for public informal feedback.
>>
>> PR: https://github.com/dlang/DIPs/pull/42
>>
>> Initial merged document:
>> https://github.com/dlang/DIPs/blob/master/DIPs/DIP1004.md
>>
>> If you want the change to be approved and have ideas how to improve it
>> to better match on
>> https://github.com/dlang/DIPs/blob/master/GUIDELINES.md and existing
>> published reviews - please submit new PR with editorial and ping
>> original author.
>
> A few errors like this are in it:
>
> class ParseException : Exception { }
> {
Would you mind a PR? :) I am afraid my eyes are too sloppy after
re-reading the text too many times.
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Re: DIP1004: Inherited Constructors
On Monday, 28 November 2016 at 02:38:00 UTC, Dicebot wrote:
DIP 1004 is merged to the queue and open for public informal
feedback.
PR: https://github.com/dlang/DIPs/pull/42
Initial merged document:
https://github.com/dlang/DIPs/blob/master/DIPs/DIP1004.md
If you want the change to be approved and have ideas how to
improve it to better match on
https://github.com/dlang/DIPs/blob/master/GUIDELINES.md and
existing published reviews - please submit new PR with
editorial and ping original author.
I think I might be a bit late to the party, and I'm still quite
new in D... but wouldn't a variadic template constructor work?
The usual rules of templates would still let you override a
constructor if needed.
---
class A {
this() { }
this(int a) { }
}
class B : A {
// Here we inherit all of A's constructors.
this(Args...)(Args args) {
super(args);
}
this(string s) { }
}
void main() {
B b1 = new B(42);
B b2 = new B("foo");
}
---
I've been playing with it, and the only problems I can see are
with specialization and casting (i.e. B defines this(float), but
you want to call A's this(int), the int will be promoted to float
and B's version will be used). A way of disabling them would be
needed, though... perhaps assert(0)?
Re: DIP1004: Inherited Constructors
On 28/11/2016 3:38 PM, Dicebot wrote:
DIP 1004 is merged to the queue and open for public informal feedback.
PR: https://github.com/dlang/DIPs/pull/42
Initial merged document:
https://github.com/dlang/DIPs/blob/master/DIPs/DIP1004.md
If you want the change to be approved and have ideas how to improve it
to better match on
https://github.com/dlang/DIPs/blob/master/GUIDELINES.md and existing
published reviews - please submit new PR with editorial and ping
original author.
A few errors like this are in it:
class ParseException : Exception { }
{
