• Andy Balba (6/6) Jul 24 2020 Hello forum
• Adam D. Ruppe (13/15) Jul 24 2020 That's a template instance, like foo in C++.
• Andy Balba (2/11) Jul 24 2020 many thanks
• Mike Parker (2/8) Jul 24 2020 https://dlang.org/spec/template.html
• aberba (7/17) Jul 25 2020 Watched a video and they were also struggling to figure out what

Andy Balba <pwplus7 gmail.com> writes:

Hello forum
  I'm a long-time C/C++ coder who recently completed the D lang 
on-line tour and want to improve my D lang savy.

I keep running into statements like  `func_name!()`
and cant figure out what !() could possibly mean .

Pz help, it's driving me nuts

Adam D. Ruppe <destructionator gmail.com> writes:

On Saturday, 25 July 2020 at 00:36:19 UTC, Andy Balba wrote:
 I keep running into statements like  `func_name!()`
 and cant figure out what !() could possibly mean .

That's a template instance, like foo<int> in C++.

Though D can pass a lot more than just types to its templates so 
you might see like foo!"bar" too, but it is the same idea - 
passing that string as a template argument to foo.

BTW if there is just one simple argument, you can leave the 
parentehsis out like I did there.

to!int

is the same as

to!(int)

which is like

to<int>

in C++.

Andy Balba <pwplus7 gmail.com> writes:

On Saturday, 25 July 2020 at 00:42:04 UTC, Adam D. Ruppe wrote:
 On Saturday, 25 July 2020 at 00:36:19 UTC, Andy Balba wrote:
 I keep running into statements like  `func_name!()`
 and cant figure out what !() could possibly mean .

 That's a template instance, like foo<int> in C++.

 Though D can pass a lot more than just types to its templates 
 so you might see like foo!"bar" too, but it is the same idea - 
 passing that string as a template argument to foo.

 BTW if there is just one simple argument, you can leave the 
 parentehsis out like I did there.

many thanks

Mike Parker <aldacron gmail.com> writes:

On Saturday, 25 July 2020 at 00:36:19 UTC, Andy Balba wrote:
 Hello forum
  I'm a long-time C/C++ coder who recently completed the D lang 
 on-line tour and want to improve my D lang savy.

 I keep running into statements like  `func_name!()`
 and cant figure out what !() could possibly mean .

 Pz help, it's driving me nuts

https://dlang.org/spec/template.html

aberba <karabutaworld gmail.com> writes:

On Saturday, 25 July 2020 at 01:23:18 UTC, Mike Parker wrote:
 On Saturday, 25 July 2020 at 00:36:19 UTC, Andy Balba wrote:
 Hello forum
  I'm a long-time C/C++ coder who recently completed the D lang 
 on-line tour and want to improve my D lang savy.

 I keep running into statements like  `func_name!()`
 and cant figure out what !() could possibly mean .

 Pz help, it's driving me nuts

 https://dlang.org/spec/template.html

Watched a video and they were also struggling to figure out what 
! means as it's used right at the beginning.

Could we highlight what the "!" mean? ...kind of like how Adam 
explained it?

Especially when they've at that point not got to the templates 
section yet.