Trait enumflags2::BitFlag

pub trait BitFlag:
    Copy
    + Clone
    + 'static
    + RawBitFlags {
    // Provided methods
    fn empty() -> BitFlags<Self> { ... }
    fn all() -> BitFlags<Self> { ... }
}

A trait automatically implemented by #[bitflags] to make the enum a valid type parameter for BitFlags<T>.

Provided Methods

fn empty() -> BitFlags<Self>

Create a BitFlags with no flags set (in other words, with a value of 0).

This is a convenience reexport of BitFlags::empty. It can be called with MyFlag::empty(), thus bypassing the need for type hints in some situations.

#[bitflags]
#[repr(u8)]
#[derive(Clone, Copy, PartialEq, Eq)]
enum MyFlag {
    One = 1 << 0,
    Two = 1 << 1,
    Three = 1 << 2,
}

use enumflags2::BitFlag;

let empty = MyFlag::empty();
assert!(empty.is_empty());
assert_eq!(empty.contains(MyFlag::One), false);
assert_eq!(empty.contains(MyFlag::Two), false);
assert_eq!(empty.contains(MyFlag::Three), false);

fn all() -> BitFlags<Self>

Create a BitFlags with all flags set.

This is a convenience reexport of BitFlags::all. It can be called with MyFlag::all(), thus bypassing the need for type hints in some situations.

#[bitflags]
#[repr(u8)]
#[derive(Clone, Copy, PartialEq, Eq)]
enum MyFlag {
    One = 1 << 0,
    Two = 1 << 1,
    Three = 1 << 2,
}

use enumflags2::BitFlag;

let empty = MyFlag::all();
assert!(empty.is_all());
assert_eq!(empty.contains(MyFlag::One), true);
assert_eq!(empty.contains(MyFlag::Two), true);
assert_eq!(empty.contains(MyFlag::Three), true);

Object Safety

This trait is not object safe.

Implementors