I'm looking at
https://tour.dlang.org/tour/en/gems/range-algorithms
(IMO the example code is far too long and complicated.)
But here's the thing:
auto wordCharCounts = words // I added this and it works fine
.map!"a.length";
writeln(wordCharCounts);
auto wordCharCounts2 = words // I added this and it works fine
.map!(a => a.length);
writeln(wordCharCounts2);
auto wordCharCounts3 = words // this is in the tutorial
.map!"a.count";
writeln(wordCharCounts3);
auto wordCharCounts4 = words // I added this and it won't
compile
.map!(a => a.count); // Error: no property count for type
string
writeln(wordCharCounts4);
I don't understand why both syntaxes work for .length but only
the string form for .count?
