Created
December 4, 2013 13:23
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wtf, rust?
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// Config.rs:34 | |
fn save_PrettyJSON<'a, T: Encodable<json::PrettyEncoder<'a>>>(p: &Path, toEncode: ~[T]) { | |
match File::create(p) { | |
Some(f) => { | |
let f2 = @mut f as @mut io::Writer; | |
let a = &mut json::PrettyEncoder::init(f2); | |
toEncode.encode(a); | |
}, None => fail!("failed to save json") | |
}; | |
} |
Author
Blei
commented
Dec 4, 2013
#[feature(managed_boxes)];
struct Whatever<'a> { w: &'a mut std::io::Writer }
impl <'a> Whatever<'a> {
fn new<'b>(w: &'b mut std::io::Writer) -> Whatever<'b> {
Whatever { w: w }
}
}
fn save_PrettyJSON(p: &Path) {
match std::io::File::create(p) {
Some(f) => {
let mut f2 = f;
let a = &mut Whatever::new(@mut f2 as @mut std::io::Writer);
},
None => fail!()
};
}
fn main() {
save_PrettyJSON(&Path::init("sntahoeu"));
}
#[feature(managed_boxes)];
struct DroppableStruct;
impl Drop for DroppableStruct {
fn drop(&mut self) {
println!("Dropping");
}
}
trait MyTrait { }
impl MyTrait for DroppableStruct {}
struct Whatever<'a> { w: &'a mut MyTrait }
impl <'a> Whatever<'a> {
fn new<'b>(w: &'b mut MyTrait) -> Whatever<'b> {
Whatever { w: w }
}
}
fn main() {
let mut f = DroppableStruct;
let _a = &mut Whatever::new(@mut f as @mut MyTrait);
}
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