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pub trait Number: NumConv {
fn from<T:Number>(n: T) -> Self;
}
impl Number for float {
fn from<T:Number>(n: T) -> float { n.to_float() }
}
pub trait NumConv {
fn to_float(&self) -> float;
}
impl NumConv for float {
fn to_float(&self) -> float { *self }
}
pub fn main() {
let _: float = Number::from(0.0f);
}
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