Re: each! vs foreach parallel timings
On 12/27/2015 04:17 PM, Jay Norwood wrote:
On Sunday, 27 December 2015 at 23:42:57 UTC, Ali Çehreli wrote:
That does not compile because i is size_t but apply_metrics() takes
an int. One solution is to call to!int:
foreach( i, ref a; parallel(samples[])){
apply_metrics(i.to!int,a);}
It builds for me still, and executes ok, but must be because size_t and
i are both 32 bits on Win32 build.
Makes sense. I would still prefer size_t and even leave it out for the
lambda:
void apply_metrics(size_t i,ref S s){
// ...
sn = i.to!int;
// ...
samples[].each!((i, ref a)=>apply_metrics(i,a));
Ali
Re: each! vs foreach parallel timings
On Sunday, 27 December 2015 at 23:42:57 UTC, Ali Çehreli wrote:
On 12/27/2015 11:30 AM, Jay Norwood wrote:
> samples[].each!((int i, ref a)=>apply_metrics(i,a));
Are you using an older compiler? That tuple expansion does not
work any more at least with dmd v2.069.0 but you can use
enumerate():
samples[].enumerate.each!(t=>apply_metrics(t[0].to!int,t[1]));
> foreach( i, ref a; parallel(samples[])){
apply_metrics(i,a);}
That does not compile because i is size_t but apply_metrics()
takes an int. One solution is to call to!int:
foreach( i, ref a; parallel(samples[])){
apply_metrics(i.to!int,a);}
To not answer your actual question, I don't think it's
possible. :)
Ali
The code I posted was compiled with v2.069.2. It isn't creating
a tuple return value in this code. I'll re-check it.
Re: each! vs foreach parallel timings
On Sunday, 27 December 2015 at 23:42:57 UTC, Ali Çehreli wrote:
That does not compile because i is size_t but apply_metrics()
takes an int. One solution is to call to!int:
foreach( i, ref a; parallel(samples[])){
apply_metrics(i.to!int,a);}
It builds for me still, and executes ok, but must be because
size_t and i are both 32 bits on Win32 build.
Re: each! vs foreach parallel timings
On 12/27/2015 11:30 AM, Jay Norwood wrote:
> samples[].each!((int i, ref a)=>apply_metrics(i,a));
Are you using an older compiler? That tuple expansion does not work any
more at least with dmd v2.069.0 but you can use enumerate():
samples[].enumerate.each!(t=>apply_metrics(t[0].to!int,t[1]));
> foreach( i, ref a; parallel(samples[])){ apply_metrics(i,a);}
That does not compile because i is size_t but apply_metrics() takes an
int. One solution is to call to!int:
foreach( i, ref a; parallel(samples[])){
apply_metrics(i.to!int,a);}
To not answer your actual question, I don't think it's possible. :)
Ali
