Hi i come from a c# background

I would like to write the following code in the according D style but i'm not sure howto do it

c# code:
void foo(IEnumerable<double[]> data)
{
  foreach (var d in data)
  {
    do_some_stuff(d);
  }
}

i guess the D equivalent to IEnumerable is Range? how would it look like in D?

greetings

pragma <the_ignorator@hotmail.com> wrote:

> Hi i come from a c# background
>
> I would like to write the following code in the according D style but i'm not
> sure howto do it
>
> c# code:
> void foo(IEnumerable<double[]> data)
> {
>   foreach (var d in data)
>   {
>     do_some_stuff(d);
>   }
> }
>
> i guess the D equivalent to IEnumerable is Range? how would it look like in D?

void foo( R )( R data )
    if ( isInputRange!R && is( ElementType!R == double ) )
{
    foreach ( d; data ) {
        do_some_stuff( d );
    }
}

-- 
Simen

Simen kjaeraas Wrote:

> pragma <the_ignorator@hotmail.com> wrote:
> 
> > Hi i come from a c# background
> >
> > I would like to write the following code in the according D style but
> > i'm not
> > sure howto do it
> >
> > c# code:
> > void foo(IEnumerable<double[]> data)
> > {
> >   foreach (var d in data)
> >   {
> >     do_some_stuff(d);
> >   }
> > }
> >
> > i guess the D equivalent to IEnumerable is Range? how would it look like in D?
> 
> void foo( R )( R data )
>      if ( isInputRange!R && is( ElementType!R == double ) )
> {
>      foreach ( d; data ) {
>          do_some_stuff( d );
>      }
> }
> 
> -- 
> Simen

I thank it should be:  is( ElementType!R == double[] ) )

Jesse Phillips <jessekphillips+D@gmail.com> wrote:

> Simen kjaeraas Wrote:
>
>> pragma <the_ignorator@hotmail.com> wrote:
>>
>> > Hi i come from a c# background
>> >
>> > I would like to write the following code in the according D style but
>> > i'm not
>> > sure howto do it
>> >
>> > c# code:
>> > void foo(IEnumerable<double[]> data)
>> > {
>> >   foreach (var d in data)
>> >   {
>> >     do_some_stuff(d);
>> >   }
>> > }
>> >
>> > i guess the D equivalent to IEnumerable is Range? how would it look  
>> like
>> > in D?
>>
>> void foo( R )( R data )
>>      if ( isInputRange!R && is( ElementType!R == double ) )
>> {
>>      foreach ( d; data ) {
>>          do_some_stuff( d );
>>      }
>> }
>>
>> --
>> Simen
>
> I thank it should be:  is( ElementType!R == double[] ) )

True.

-- 
Simen

On Mon, 24 Jan 2011 14:39:33 -0500, Simen kjaeraas <simen.kjaras@gmail.com> wrote:

> pragma <the_ignorator@hotmail.com> wrote:
>
>> Hi i come from a c# background
>>
>> I would like to write the following code in the according D style but i'm not
>> sure howto do it
>>
>> c# code:
>> void foo(IEnumerable<double[]> data)
>> {
>>   foreach (var d in data)
>>   {
>>     do_some_stuff(d);
>>   }
>> }
>>
>> i guess the D equivalent to IEnumerable is Range? how would it look like in D?
>
> void foo( R )( R data )
>      if ( isInputRange!R && is( ElementType!R == double ) )
> {
>      foreach ( d; data ) {
>          do_some_stuff( d );
>      }
> }

Actually, isIterable would be more correct than isInputRange for this code example, not sure what the full code looks like.

http://www.digitalmars.com/d/2.0/phobos/std_traits.html#isIterable

-Steve

On Mon, 24 Jan 2011 14:39:33 -0500, Simen kjaeraas <simen.kjaras@gmail.com> wrote:

> pragma <the_ignorator@hotmail.com> wrote:
>
>> Hi i come from a c# background
>>
>> I would like to write the following code in the according D style but
>> i'm not
>> sure howto do it
>>
>> c# code:
>> void foo(IEnumerable<double[]> data)
>> {
>>   foreach (var d in data)
>>   {
>>     do_some_stuff(d);
>>   }
>> }
>>
>> i guess the D equivalent to IEnumerable is Range? how would it look like in D?
>
> void foo( R )( R data )
>      if ( isInputRange!R && is( ElementType!R == double ) )
> {
>      foreach ( d; data ) {
>          do_some_stuff( d );
>      }
> }

Actually, isIterable would be more correct than isInputRange for this code example, not sure what the full code looks like.

http://www.digitalmars.com/d/2.0/phobos/std_traits.html#isIterable

-Steve


How about simply saying:

void foo(double[] data)
{
   foreach (d; data)
   {
     do_some_stuff(d);
   }
}

all ranges are already foreachable.

Regards
Mandeep

Mandeep Singh Brar Wrote:

> How about simply saying:
> 
> void foo(double[] data)
> {
>    foreach (d; data)
>    {
>      do_some_stuff(d);
>    }
> }
> 
> all ranges are already foreachable.
> 
> Regards
> Mandeep

He is iterating over a range/iterable of double[], Simen got the type check wrong, which I pointed out.