22 lines
536 B
Markdown
22 lines
536 B
Markdown
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.
|
|
|
|
```rust
|
|
// Override the built-in function 'to_int'
|
|
fn to_int(num) {
|
|
print("Ha! Gotcha! " + num);
|
|
}
|
|
|
|
let x = (123).to_int();
|
|
|
|
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.
|