Enum OptionDragContext 

#[repr(C, u8)]
pub enum OptionDragContext {
    None,
    Some(DragContext),
}

Variants

None

Some(DragContext)

Implementations

impl OptionDragContext

pub fn into_option(&self) -> Option<DragContext>

impl OptionDragContext

pub fn as_option(&self) -> Option<&DragContext>

pub fn replace(&mut self, value: DragContext) -> OptionDragContext

pub fn is_some(&self) -> bool

pub fn is_none(&self) -> bool

pub const fn as_ref(&self) -> Option<&DragContext>

pub fn as_mut(&mut self) -> Option<&mut DragContext>

pub fn map<U, F: FnOnce(DragContext) -> U>(self, f: F) -> Option<U>

pub fn and_then<U, F>(self, f: F) -> Option<U>

where F: FnOnce(DragContext) -> Option<U>,

Trait Implementations

impl Clone for OptionDragContext

fn clone(&self) -> OptionDragContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptionDragContext

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

Formats the value using the given formatter.

impl Default for OptionDragContext

fn default() -> OptionDragContext

Returns the “default value” for a type.

impl From<Option<DragContext>> for OptionDragContext

fn from(o: Option<DragContext>) -> OptionDragContext

Converts to this type from the input type.

impl From<OptionDragContext> for Option<DragContext>

fn from(o: OptionDragContext) -> Option<DragContext>

Converts to this type from the input type.

impl PartialEq for OptionDragContext

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for OptionDragContext