Hi all,
I have a function and i want to convert this into a template so that i can use this function for more than one data type.
This is my function.
```D
void ArrayAdd( ref int[] x, int value) {
    int index = x.length ;
    x.length += 1 ;
    x[index] = value ;
}
```

On Tuesday, October 2, 2018 5:40:18 AM MDT Vinod K Chandran via Digitalmars- d-learn wrote:
> Hi all,
> I have a function and i want to convert this into a template so
> that i can use this function for more than one data type.
> This is my function.
> ```D
> void ArrayAdd( ref int[] x, int value) {
>      int index = x.length ;
>      x.length += 1 ;
>      x[index] = value ;
> }
> ```

Why do you have a function for that? All you need to do is use the append operator. e.g.

x ~= value;

- Jonathan M Davis

On Tuesday, 2 October 2018 at 11:49:06 UTC, Jonathan M Davis wrote:
> Why do you have a function for that? All you need to do is use the append operator. e.g.
>
> x ~= value;
>
> - Jonathan M Davis

Thanks for the reply. I did not find that it in documentation.  Ofcourse i lost a chance to learn about templates. By translating a well known function into a template, i can easiy learn the concept, since the template documentation is little bit hard to understand.

On Tuesday, October 2, 2018 6:09:53 AM MDT Vinod K Chandran via Digitalmars- d-learn wrote:
> On Tuesday, 2 October 2018 at 11:49:06 UTC, Jonathan M Davis
>
> wrote:
> > Why do you have a function for that? All you need to do is use the append operator. e.g.
> >
> > x ~= value;
> >
> > - Jonathan M Davis
>
> Thanks for the reply. I did not find that it in documentation. Ofcourse i lost a chance to learn about templates. By translating a well known function into a template, i can easiy learn the concept, since the template documentation is little bit hard to understand.

The template equivalent would have been something like

void arrayAdd(T)(ref T[] x, T value)
{
    auto index = x.length;
    x.length += 1;
    x[index] = value;
}

But if you're new to the language, I'd suggest that you read this site / book:

http://ddili.org/ders/d.en/index.html

- Jonathan M Davis

On Tuesday, 2 October 2018 at 12:23:47 UTC, Jonathan M Davis wrote:
>
> The template equivalent would have been something like
>
> void arrayAdd(T)(ref T[] x, T value)
> {
>     auto index = x.length;
>     x.length += 1;
>     x[index] = value;
> }
>
> But if you're new to the language, I'd suggest that you read this site / book:
>
> http://ddili.org/ders/d.en/index.html
>
> - Jonathan M Davis
Thanks a lot. Great help !. I will sure the check the link. :)
The doumentation did not tell me about the (T) in template. I can understand the "(T)" s inside the parentheses but i can't understand the one after template name.

On 10/02/2018 07:39 AM, Vinod K Chandran wrote:

> Thanks a lot. Great help !. I will sure the check the link. :)

I find the Index section useful (yes, can be improved). For example, just seach for "append" on this page:

  http://ddili.org/ders/d.en/ix.html

> The doumentation did not tell me about the (T) in template. I can
> understand the "(T)" s inside the parentheses but i can't understand the
> one after template name.

The Templates chapter says:

  Although T is an arbitrary name, it is an acronym for "type" and
  is very common in templates.


http://ddili.org/ders/d.en/templates.html#ix_templates.function%20template

Ali

On Tuesday, 2 October 2018 at 17:37:58 UTC, Ali Çehreli wrote:
> On 10/02/2018 07:39 AM, Vinod K Chandran wrote:
>
> > Thanks a lot. Great help !. I will sure the check the link. :)
>
> I find the Index section useful (yes, can be improved). For example, just seach for "append" on this page:
>
>   http://ddili.org/ders/d.en/ix.html
>
> > The doumentation did not tell me about the (T) in template. I
> can
> > understand the "(T)" s inside the parentheses but i can't
> understand the
> > one after template name.
>
> The Templates chapter says:
>
>   Although T is an arbitrary name, it is an acronym for "type" and
>   is very common in templates.
>
>
> http://ddili.org/ders/d.en/templates.html#ix_templates.function%20template
>
> Ali

Thanks for the reply. Yes, the tutorial in that link contains append array. I think its  good for me to learn with this tutorial, everything is structured and easy to find.