On 2015-02-07 at 13:47, Kadir Erdem Demir wrote:
auto sum = aArr.reduce!((a,b) => a.count + b.count);
The line above gives
C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(770): Error: cannot
implicitly convert expression (__lambda3(result, front(_param_1))) of type int
to A
C:\D\dmd2\windows\bin\..\..\src\phobos\std\algorithm.d(791): Error: template
instance app.main.reduce!((a, b) => a.count + b.count).reduce!(A, A[]) error
instantiating
source\app.d(363): instantiated from here: reduce!(A[])
// auto sum = aArr.reduce!((a,b) => a.count + b.count); // Wrong
auto sum = reduce!((a, b) => a + b.count)(0, aArr); // Good
See here: http://dlang.org/phobos/std_algorithm.html#.reduce
