Templates problem

[Russel Winder via Digitalmars-d-learn]

The code fragment:

	const results = benchmark!(run_mean, run_mode, run_stdDev)(1);
	const times = map!((TickDuration t) { return (to!Duration(t)).total!"seconds"; })(results);

seems entirely reasonable to me. However rdmd 20160627 begs to differ:

run_checks.d(20): Error: template std.algorithm.iteration.map!(function (TickDuration t) => to(t).total()).map cannot deduce function from argument types !()(const(TickDuration[3])), candidates are:
/usr/include/dmd/phobos/std/algorithm/iteration.d(450):        std.algorithm.iteration.map!(function (TickDuration t) => to(t).total()).map(Range)(Range r) if (isInputRange!(Unqual!Range))
Failed: ["dmd", "-v", "-o-", "run_checks.d", "-I."]

and I have no idea just now why it is complaining, nor what to do to
fix it.


-- 
Russel.
=============================================================================
Dr Russel Winder      t: +44 20 7585 2200   voip: sip:russel.winder at ekiga.net
41 Buckmaster Road    m: +44 7770 465 077   xmpp: russel at winder.org.uk
London SW11 1EN, UK   w: www.russel.org.uk  skype: russel_winder
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