Enum dynfmt::Position

pub enum Position<'a> {
    Auto,
    Index(usize),
    Key(&'a str),
}

Refers to an argument within an argument list.

During formatting, the formatter will pull arguments from the argument list. Depending on whether the argument list supports indexed or named lookups, this might result in an error. See FormatArgs for argument list implementations.

A Position may borrow they key name from the format string.

Variants

Auto

The next indexed argument in line.

The formatter maintains an internal state to keep track of the sequence of auto-arguments. If an interim access to a specific indexed or named argument occurs, the formatter will afterwards continue after the last auto argument.

Requires the argument list to be indexable by numbers.

Index(usize)

Index argument at the given offset.

Requires the argument list to be indexable by numbers.

Key(&'a str)

Named argument with the given key.

Requires the argument list to be indexable by string keys.

Trait Implementations

impl<'a> Clone for Position<'a>

fn clone(&self) -> Position<'a>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Position<'a>

impl<'a> Debug for Position<'a>

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

Formats the value using the given formatter.

impl Default for Position<'_>

fn default() -> Self

Returns the “default value” for a type.

impl Display for Position<'_>

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

Formats the value using the given formatter.

impl<'a> Eq for Position<'a>

impl<'a> Hash for Position<'a>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<'a> Ord for Position<'a>

fn cmp(&self, other: &Position<'a>) -> Ordering

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

Restrict a value to a certain interval.

impl<'a> PartialEq<Position<'a>> for Position<'a>

fn eq(&self, other: &Position<'a>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Position<'a>) -> bool

This method tests for !=.

impl<'a> PartialOrd<Position<'a>> for Position<'a>

fn partial_cmp(&self, other: &Position<'a>) -> Option<Ordering>

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

#[must_use]pub fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]pub fn le(&self, other: &Rhs) -> bool

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

#[must_use]pub fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]pub fn ge(&self, other: &Rhs) -> bool

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

impl<'a> StructuralEq for Position<'a>

impl<'a> StructuralPartialEq for Position<'a>