Enum OptionFmtArg 

#[repr(C, u8)]
pub enum OptionFmtArg {
    None,
    Some(FmtArg),
}

Variants

None

Some(FmtArg)

Implementations

impl OptionFmtArg

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

impl OptionFmtArg

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

pub fn replace(&mut self, value: FmtArg) -> OptionFmtArg

pub fn is_some(&self) -> bool

pub fn is_none(&self) -> bool

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

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

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

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

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

Trait Implementations

impl Clone for OptionFmtArg

fn clone(&self) -> OptionFmtArg

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for OptionFmtArg

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

Formats the value using the given formatter.

impl Default for OptionFmtArg

fn default() -> OptionFmtArg

Returns the “default value” for a type.

impl From<Option<FmtArg>> for OptionFmtArg

fn from(o: Option<FmtArg>) -> OptionFmtArg

Converts to this type from the input type.

impl From<OptionFmtArg> for Option<FmtArg>

fn from(o: OptionFmtArg) -> Option<FmtArg>

Converts to this type from the input type.

impl PartialEq for OptionFmtArg

fn eq(&self, other: &OptionFmtArg) -> 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 PartialOrd for OptionFmtArg

fn partial_cmp(&self, other: &OptionFmtArg) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for OptionFmtArg