skaller wrote:
>
> Fixed now. Forgot to instantiate the type variables,
> it was looking for Str[T] with the T in foo, instead
> of int.
Awesome, thanks! Also, felix can almost do one form of
typeclasses-in-modules:
////////////////////////////////////////////////
#import <flx.flxh>
open List;
typeclass Str[T] {
virtual fun str2: T->string;
}
module Foo {
instance Str[int] {
fun str2 (x:int):string => str x;
}
fun foo[T with Str[T]] (x:T):string => str2 x;
fun foo[T with Str[T]] (x:list[T]):string =>
match x with
| Empty[T] => "()"
| Cons(?h, ?t) => "(" + (str2 h) + ", " + (foo t) + ")"
endmatch
;
}
open Foo;
print$ Foo::foo 5; endl;
print$ Foo::foo$ list(1,2,3,4); endl;
////////////////////////////////////////////////
This is erroring out with this:
////////////////////////////////////////////////
CLIENT ERROR
[lookup_name_in_env]: Name '_inst_Str' not found in environment (depth 2)
In foo.flx: line 14, cols 18 to 24
13:
14: fun foo[T with Str[T]] (x:T):string => str2 x;
*******
15:
////////////////////////////////////////////////
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys -- and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Felix-language mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/felix-language
