Challenge

[Russel Winder via Digitalmars-d]

On Sun, 2015-08-30 at 10:38 +0000, John Colvin via Digitalmars-d wrote:
> On Sunday, 30 August 2015 at 10:15:14 UTC, John Colvin wrote:
> > import std.algorithm, std.range;
> > 
> > auto foo(R)(R a, immutable int b)
> > {
> >     return a.map!(x => x + b);
> > }
> > 
> > unittest @nogc @safe
> > {
> >     int[] test = [1,2,3];
> > 
> >     assert(test.foo(3).equal(only(4,5,6)));
> > }
> > 
> > Challenge: reimplement `foo` such that above unittest will 
> > compile. No cheating with malloc etc. Bonus points if you don't 
> > have to implement a modified version of std.algorithm.map
> 
> Ok, so now I feel stupid. Not only was the unittest I gave above 
> broken anyway, I realised what my underlying problem was within 
> minutes of posting...

So what was the problem?

> Carry on, nothing to see here...

See above…

-- 
Russel.
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