as

Renames an import, or converts a value between primitive types.

In use path::item as alias;, the item is bound as alias. In an expression, x as T converts between int, float, byte and bool; float as int truncates toward zero.

use io::sync::{println as say};

fn main() {
    let n = 7.9 as int; // 7
    let f = 3 as float; // 3.0
    let _ = say("done");
}

See also#

• int
• float
• byte
• bool
• fn: Declares a function, a method, or (written in an expression) an anonymous function.
• let: Declares a mutable local variable.
• const: Declares a binding that cannot be reassigned: a local, a module constant, or a class field that is set only by new.
• static: Declares a module-level or class-level slot shared by the whole program, or a method without self.