565 B
565 B
Override a Built-in Function
{{#include ../links.md}}
Any similarly-named function defined in a script overrides any built-in or registered native Rust function of the same name and number of parameters.
// Override the built-in function 'to_float' when called as a method
fn to_float() {
print("Ha! Gotcha! " + this);
42.0
}
let x = 123.to_float();
print(x); // what happens?
A registered native Rust function, in turn, overrides any built-in function of the same name, number and types of parameters.