Struct ExcessHandlingFunction 

pub struct ExcessHandlingFunction<Value, PadBlock = char>(pub fn(Excess<'_, Value, PadBlock>, &mut Formatter<'_>) -> Result<(), Error>)
where
    Value: Width,
    PadBlock: Display;

Turn a function (without closure) into a ExcessHandler.

Example: Truncate to make it fit

use zero_copy_pads::{ExcessHandlingFunction, Excess, PaddedValue, AlignRight};
use std::fmt::{Formatter, Result};
let truncate = ExcessHandlingFunction::<&str>(|excess, formatter| {
    let mut value = excess.value.to_string();
    value.truncate(excess.total_width);
    write!(formatter, "{}", value)
});
let padded_value = PaddedValue {
    handle_excess: truncate,
    value: "abcdefghi",
    total_width: 4,
    pad_block: ' ',
    pad: AlignRight,
};
assert_eq!(padded_value.to_string(), "abcd");

Tuple Fields

0: fn(Excess<'_, Value, PadBlock>, &mut Formatter<'_>) -> Result<(), Error>

Trait Implementations

impl<Value, PadBlock> AsMut<fn(Excess<'_, Value, PadBlock>, &mut Formatter<'_>) -> Result<(), Error>> for ExcessHandlingFunction<Value, PadBlock>

where Value: Width, PadBlock: Display,

fn as_mut( &mut self, ) -> &mut fn(Excess<'_, Value, PadBlock>, &mut Formatter<'_>) -> Result<(), Error>

Converts this type into a mutable reference of the (usually inferred) input type.

impl<Value, PadBlock> AsRef<fn(Excess<'_, Value, PadBlock>, &mut Formatter<'_>) -> Result<(), Error>> for ExcessHandlingFunction<Value, PadBlock>

where Value: Width, PadBlock: Display,

fn as_ref( &self, ) -> &fn(Excess<'_, Value, PadBlock>, &mut Formatter<'_>) -> Result<(), Error>

Converts this type into a shared reference of the (usually inferred) input type.

impl<Value, PadBlock> Clone for ExcessHandlingFunction<Value, PadBlock>

where Value: Width + Clone, PadBlock: Display + Clone,

fn clone(&self) -> ExcessHandlingFunction<Value, PadBlock>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<Value, PadBlock> Deref for ExcessHandlingFunction<Value, PadBlock>

where Value: Width, PadBlock: Display,

type Target = fn(Excess<'_, Value, PadBlock>, &mut Formatter<'_>) -> Result<(), Error>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<Value, PadBlock> DerefMut for ExcessHandlingFunction<Value, PadBlock>

where Value: Width, PadBlock: Display,

fn deref_mut(&mut self) -> &mut Self::Target

Mutably dereferences the value.

impl<Value, PadBlock> ExcessHandler<Value, PadBlock> for ExcessHandlingFunction<Value, PadBlock>

where Value: Width, PadBlock: Display,

fn handle_excess( &self, excess: Excess<'_, Value, PadBlock>, formatter: &mut Formatter<'_>, ) -> Result<(), Error>

Handle excessive width of a value.

impl<Value, PadBlock> From<ErrorOnExcess> for ExcessHandlingFunction<Value, PadBlock>

where Value: Width, PadBlock: Display,

fn from(_: ErrorOnExcess) -> Self

Converts to this type from the input type.

impl<Value, PadBlock> From<IgnoreExcess> for ExcessHandlingFunction<Value, PadBlock>

where Value: Width, PadBlock: Display,

fn from(_: IgnoreExcess) -> Self

Converts to this type from the input type.

impl<Value, PadBlock> From<PanicOnExcess> for ExcessHandlingFunction<Value, PadBlock>

where Value: Width, PadBlock: Display,

fn from(_: PanicOnExcess) -> Self

Converts to this type from the input type.

impl<Value, PadBlock> From<fn(Excess<'_, Value, PadBlock>, &mut Formatter<'_>) -> Result<(), Error>> for ExcessHandlingFunction<Value, PadBlock>

where Value: Width, PadBlock: Display,

fn from( original: fn(Excess<'_, Value, PadBlock>, &mut Formatter<'_>) -> Result<(), Error>, ) -> ExcessHandlingFunction<Value, PadBlock>

Converts to this type from the input type.

impl<Value, PadBlock> Copy for ExcessHandlingFunction<Value, PadBlock>

where Value: Width + Copy, PadBlock: Display + Copy,