Enum PreviewLayout 

#[repr(u32)]
pub enum PreviewLayout {
    Device = 2,
    SizeThatFits = 3,
}

SwiftUI.PreviewLayout’s cases without payloads.

The tags are not the declaration order. Swift numbers an enum’s payload cases first, and PreviewLayout has two of them — fixed and fixed3D — so the empty cases start at two. Guessing zero and one lands on fixed3D with a zeroed payload, which dumps as a real case and renders as nothing.

Variants

Device = 2

SizeThatFits = 3

Trait Implementations

impl Clone for PreviewLayout

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for PreviewLayout

impl Debug for PreviewLayout

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for PreviewLayout

impl From<Device> for PreviewLayout

fn from(_: Device) -> Self

Converts to this type from the input type.

impl From<SizeThatFits> for PreviewLayout

fn from(_: SizeThatFits) -> Self

Converts to this type from the input type.

impl PartialEq for PreviewLayout

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PreviewLayout