Re: Generating unique identifiers at compile time
On Thursday, 9 June 2022 at 21:20:27 UTC, JG wrote:
Hi,
As an experiment I have implemented the following kind of
pattern matching
(by parsing the part of the string before '=').
```d
struct S {
int x;
int y;
}
struct T {
int w;
S s;
}
void main()
{
mixin(matchAssign(q{auto T(first,S(second,third)) =
T(1,S(2,3));}));
first.writeln; // 1
second.writeln; // 2
third.writeln; // 3
}
```
In doing so I wanted to produce unique identifiers (something
like gensym in racket.) I did this in a very hacky way:
```d
auto hopefullyUniqueName(size_t n, size_t line=__LINE__) {
return
format!"var___%s%s"(n,line);
}
```
where I pass in the hash of the right hand side in the
assignment in place of n.
Is there some way to ask the compiler for a unique name or a
better way of achieving this?
No, for now there if there are other ways they are as hacky as
yours.
The compiler usually uses a global counter to generate
temporaries.
There's [been attempts] to expose it, exactly so that users can
generate unique names, but that did not found its path in the
compiler.
[been attempts]: https://github.com/dlang/dmd/pull/10131
Generating unique identifiers at compile time
Hi,
As an experiment I have implemented the following kind of pattern
matching
(by parsing the part of the string before '=').
```d
struct S {
int x;
int y;
}
struct T {
int w;
S s;
}
void main()
{
mixin(matchAssign(q{auto T(first,S(second,third)) =
T(1,S(2,3));}));
first.writeln; // 1
second.writeln; // 2
third.writeln; // 3
}
```
In doing so I wanted to produce unique identifiers (something
like gensym in racket.) I did this in a very hacky way:
```d
auto hopefullyUniqueName(size_t n, size_t line=__LINE__) {
return
format!"var___%s%s"(n,line);
}
```
where I pass in the hash of the right hand side in the assignment
in place of n.
Is there some way to ask the compiler for a unique name or a
better way of achieving this?
Re: What happened to Circular Studio?
On Monday, 6 June 2022 at 21:07:58 UTC, Steven Schveighoffer wrote: On 6/6/22 3:46 PM, Jack wrote: I just found out a game using D to develop games but later I see the last updates on the github, web site, twitter etc is from 2015. Does anyone knows what happend to the company? It appears to be just a playground for a bunch of friends at RIT, I'm not sure how much of a "company" this was. But, there is activity in the github issues list, circa November 2020: https://github.com/Circular-Studios/Dash/issues/249 But who knows, probably just fizzled out. I admit, I never heard of them. -Steve Their engine was unfortunate enough to land before the great language update in 2015-2016, basically updating it to work with current D well be such a PITA that it is easier to rewrite from scratch, I did tried to update it but eventually abandoned it because there is tons of dependencies from that era that was abandoned as well. It has some nice ideas like Unity-like class registration and metadata using CTFE but that's basically it... They even have minor issues in shaders like right-handed math mixed with left-handed math resulting in broken shadows and more issues.
