Re: std.algorithm and templates

[bearophile via Digitalmars-d-learn]

meat:

class Woah(){}
class Bro: Woah{}
DList!Woah woahs;

and I'm having trouble with..

foreach( bro; woahs.filter!( a => cast(Bro)a !is null))

import std.algorithm, std.container;

class Woah {}
class Bro : Woah {}

void main() {
    DList!Woah woahs;
    foreach (bro; woahs[].filter!(a => cast(Bro)a !is null)) {}
}

Bye,
bearophile