Thank you.
My problem is more complex than the example I gave. Your answer help me
in reorganizing my code. I use a lib that as generic method that why I
put generic in the example. I remove them and change the way I pass
parameters. I didn't solve everything but I think I'm progressing.
If I don't find the answer I'll post a new example.
Philippe
Le 09/02/2014 00:56, Ashish Myles a écrit :
On Sat, Feb 8, 2014 at 6:48 PM, Ashish Myles <[email protected]
<mailto:[email protected]>> wrote:
On Sat, Feb 8, 2014 at 1:21 PM, Philippe Delrieu
<[email protected] <mailto:[email protected]>> wrote:
pub trait Base {
fn do_base(&self);
}
struct TestBase;
impl Base for TestBase {
fn do_base(&self) {
println!("ici");
}
}
trait GenerciFn {
fn do_generic<T: Base>(&self, base: &T);
}
struct DoGenericFn;
impl GenerciFn for DoGenericFn {
fn do_generic<T: Base>(&self, base: &T) {
base.do_base();
}
}
struct ToTestStr {
vec_gen: ~[~TestBase],
}
impl ToTestStr {
fn testgencall<T: GenerciFn>(&self, gen: &T) {
for base in self.vec_gen.iter() {
//let test = base as &~TestBase;
gen.do_generic(&**base);
}
}
}
#[main]
fn main() {
let base = TestBase;
let test = ToTestStr {vec_gen: ~[~base],};
let gen = DoGenericFn;
test.testgencall(&gen);
It took me a few attempts to get the for loop right, but here you go.
pub trait Base {
fn do_base(&self);
}
struct TestBase;
impl Base for TestBase {
fn do_base(&self) {
println!("ici");
}
}
trait GenericFn {
fn do_generic(&self, base: &Base);
}
struct DoGenericFn;
impl GenericFn for DoGenericFn {
fn do_generic(&self, base: &Base) {
base.do_base();
}
}
struct ToTestStr {
vec_gen: ~[~Base],
}
impl ToTestStr {
fn testgencall<T: GenericFn>(&self, gen: &T) {
for ref base in self.vec_gen.iter() {
gen.do_generic(**base);
}
}
}
#[main]
fn main() {
let testbase = TestBase;
let test = ToTestStr {vec_gen: ~[~testbase as ~Base],};
let gen = DoGenericFn;
test.testgencall(&gen);
}
Also, for a little more runtime polymorphism, you could change
testgencall's declaration to
fn testgencall(&self, gen: &GenericFn) {
...
}
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