Re: is there a common type?

[Christian Köstlin]

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