• =?ISO-8859-1?Q?Christian_K=F6stlin?= (3/3) May 15 2012 for [1, 2, 3] and iota(2, 10)?
• H. S. Teoh (8/9) May 15 2012 [...]
• =?ISO-8859-1?Q?Christian_K=F6stlin?= (11/16) May 17 2012 actually i just want to do some commandline parsing with default-values
• Simen Kjaeraas (11/31) May 17 2012 e:
• =?UTF-8?B?QWxpIMOHZWhyZWxp?= (39/42) May 15 2012 When it comes to compile-time polymorphism or duck typing, they are both...
• =?UTF-8?B?Q2hyaXN0aWFuIEvDtnN0bGlu?= (4/46) May 17 2012 thanks a lot .. will try this.

=?ISO-8859-1?Q?Christian_K=F6stlin?= <christian.koestlin gmail.com> writes:

for [1, 2, 3] and iota(2, 10)?

thanks in advance

christian

"H. S. Teoh" <hsteoh quickfur.ath.cx> writes:

On Tue, May 15, 2012 at 07:29:38PM +0200, Christian Köstlin wrote:
 for [1, 2, 3] and iota(2, 10)?

[...]

What are you trying to accomplish?


T

-- 
We've all heard that a million monkeys banging on a million typewriters
will eventually reproduce the entire works of Shakespeare.  Now, thanks
to the Internet, we know this is not true. -- Robert Wilensk

=?ISO-8859-1?Q?Christian_K=F6stlin?= <christian.koestlin gmail.com> writes:

On 5/15/12 19:44 , H. S. Teoh wrote:
 On Tue, May 15, 2012 at 07:29:38PM +0200, Christian Köstlin wrote:
 for [1, 2, 3] and iota(2, 10)?

 [...]

 What are you trying to accomplish?


 T

actually i just want to do some commandline parsing with default-values 
like this:
int main(string[] args) {
   auto h = [1, 2, 3];
   if (args.length > 1) {
     h = iota(1, args[1].to!(int));
   }
   do_something_with(h);
   return 0;
}

"Simen Kjaeraas" <simen.kjaras gmail.com> writes:

On Thu, 17 May 2012 16:28:56 +0200, Christian K=C3=B6stlin  =

<christian.koestlin gmail.com> wrote:

 On 5/15/12 19:44 , H. S. Teoh wrote:
 On Tue, May 15, 2012 at 07:29:38PM +0200, Christian K=C3=B6stlin wrot=


e:
 for [1, 2, 3] and iota(2, 10)?

 [...]

 What are you trying to accomplish?


 T

 actually i just want to do some commandline parsing with default-value=

s  =

 like this:
 int main(string[] args) {
    auto h =3D [1, 2, 3];
    if (args.length > 1) {
      h =3D iota(1, args[1].to!(int));
    }
    do_something_with(h);
    return 0;
 }

In that case, you should probably replace
   h =3D iota(1, args[1].to!(int));
with
   h =3D iota(1, args[1].to!(int)).array();
(assuming 2.059)
or
   h =3D array(iota(1, args[1].to!(int)));

=?UTF-8?B?QWxpIMOHZWhyZWxp?= <acehreli yahoo.com> writes:

On 05/15/2012 10:29 AM, Christian Köstlin wrote:
 for [1, 2, 3] and iota(2, 10)?

 thanks in advance

 christian

When it comes to compile-time polymorphism or duck typing, they are both 
RandomAccessRanges. (Pedantically, [1, 2, 3] is not a range (I think 
:P), but a container. Although, any slice of it is a RandomAccessRange.)

import std.range;
import std.stdio;

void foo(R)(R r)
     if (isRandomAccessRange!R)
{
     if (!r.empty) {
         writeln(r[0]);
     }
}

void main()
{
     foo([1, 2, 3]);
     foo(iota(2, 10));
}

When it comes to runtime polymorphism, they can be both 
RandomAccessFinite!int:

import std.range;
import std.stdio;

void foo(RandomAccessFinite!int r)
{
     if (!r.empty) {
         writeln(r[0]);
     }
}

void main()
{
     RandomAccessFinite!int r;

     r = inputRangeObject([1, 2, 3]);
     foo(r);

     r = inputRangeObject(iota(2, 10));
     foo(r);
}

Ali

-- 
D Programming Language Tutorial: http://ddili.org/ders/d.en/index.html

=?UTF-8?B?Q2hyaXN0aWFuIEvDtnN0bGlu?= <christian.koestlin gmail.com> writes:

On 5/15/12 20:14 , Ali Çehreli wrote:
 On 05/15/2012 10:29 AM, Christian Köstlin wrote:
 for [1, 2, 3] and iota(2, 10)?

 thanks in advance

 christian

 When it comes to compile-time polymorphism or duck typing, they are both
 RandomAccessRanges. (Pedantically, [1, 2, 3] is not a range (I think
 :P), but a container. Although, any slice of it is a RandomAccessRange.)

 import std.range;
 import std.stdio;

 void foo(R)(R r)
 if (isRandomAccessRange!R)
 {
 if (!r.empty) {
 writeln(r[0]);
 }
 }

 void main()
 {
 foo([1, 2, 3]);
 foo(iota(2, 10));
 }

 When it comes to runtime polymorphism, they can be both
 RandomAccessFinite!int:

 import std.range;
 import std.stdio;

 void foo(RandomAccessFinite!int r)
 {
 if (!r.empty) {
 writeln(r[0]);
 }
 }

 void main()
 {
 RandomAccessFinite!int r;

 r = inputRangeObject([1, 2, 3]);
 foo(r);

 r = inputRangeObject(iota(2, 10));
 foo(r);
 }

 Ali

thanks a lot .. will try this.

regards

christian