On Tuesday, 29 December 2015 at 09:26:31 UTC, Alex wrote:
The problem is, that the last line with the reduce does not
compile. Why?
If you get an error, it is imperative that you tell us what it is.
For the record, this code:
import std.bitmanip;
import std.stdio;
import std.algorithm;
void main() {
BitArray[] arr7 = [BitArray([0, 1, 0, 1, 0, 1]), BitArray([0,
1, 0, 0, 0, 0]), BitArray([0, 1, 0, 1, 0, 0]), BitArray([0, 1, 0,
1, 0, 0])];
BitArray common = BitArray([1,1,1,1,1,1]);
foreach(BitArray ba; arr7)
{
common &= ba;
}
writeln("common2: ", common);
writeln("common1: ", reduce!((a,b) => a & b)(arr7));
}
Gives me the error:
/opt/compilers/dmd2/include/std/algorithm/iteration.d(2570):
Error: variable f868.main.F!(__lambda1).e cannot be declared to
be a function
/opt/compilers/dmd2/include/std/meta.d(546): Error: template
instance f868.main.F!(__lambda1) error instantiating
/opt/compilers/dmd2/include/std/algorithm/iteration.d(2477):
instantiated from here: staticMap!(ReduceSeedType, __lambda1)
/d486/f868.d(16): instantiated from here:
reduce!(BitArray[])
/d486/f868.d(16): Error: template std.algorithm.iteration.reduce
cannot deduce function from argument types !((a, b) => a &
b)(BitArray[]), candidates are:
/opt/compilers/dmd2/include/std/algorithm/iteration.d(2451):
std.algorithm.iteration.reduce(fun...) if (fun.length >= 1)
On 2.069.1 (dpaste: http://dpaste.dzfl.pl/8d7652e7ebeb). I don't
have time ATM to diagnose it further. It definitely shouldn't be
that cryptic of an error message.
