Turn function into infinite range

[monarch_dodra via Digitalmars-d-learn]

On Monday, 29 September 2014 at 21:16:27 UTC, Daniel Kozák via 
Digitalmars-d-learn wrote:
> V Mon, 29 Sep 2014 19:02:36 +0200
> Martin Nowak via Digitalmars-d-learn
> <digitalmars-d-learn at puremagic.com> napsáno:
>
>> Does anyone know a construct to turn a lambda into an infinite 
>> range.
>> 
>>      import std.random;
>> 
>>      unittest
>>      {
>>          Random gen;
>>          foreach(v; xxx!(() => uniform(0, 100, gen)).take(10))
>>              writeln(v);
>>      }
>> 
>> I though I've seen this around somewhere but can no longer 
>> find it.
>
> http://dlang.org/phobos/std_range.html#.Repeat ?

That just repeats the value, but doesn't re-evaluate the value on 
every call to front/popFront.