Trait itron_asp3::closure::IntoClosure

pub trait IntoClosure {
    fn into_closure(self) -> Closure;
}

This is supported on crate feature unstable only.

Conversion to Closure.

Required methods

fn into_closure(self) -> Closure

Convert self to Closure.

Implementations on Foreign Types

impl IntoClosure for (extern "C" fn(_: EXINF), EXINF)

Trivial conversion.

fn into_closure(self) -> Closure

Implementors

impl<T: Fn() + Copy + 'static> IntoClosure for T

Example

use itron::closure::IntoClosure;
let (fp, data) = (|| dbg!()).into_closure();
unsafe { fp(data) };

let captured_value = 42u16;
let (fp, data) = (move || { assert_eq!(captured_value, 42); }).into_closure();
unsafe { fp(data) };

let captured_value = &"hello";
let (fp, data) = (move || { assert_eq!(*captured_value, "hello"); }).into_closure();
unsafe { fp(data) };

The source type must fit in abi::EXINF:

let captured_value = [0usize; 2]; // too large!
let _ = (move || { dbg!(captured_value); }).into_closure();

The source type must not contain a reference to a local variable:

let captured_value = 42usize;
let _ = (|| { dbg!(&captured_value); }).into_closure(); // capturing by reference