Enum SizeConfig 

pub enum SizeConfig {
    Default,
    Ratio(f64),
    Fixed(usize),
}

Helper option to describe the size of a wrapper, relative to a wrapped object.

Variants

Default

Use the size of the source dataset.

Ratio(f64)

Use the size as a ratio of the source dataset size.

Must be >= 0.

Fixed(usize)

Use a fixed size.

Implementations

impl SizeConfig

pub fn source() -> SizeConfig

Construct a source which will have the same size as the source dataset.

pub fn resolve(self, source_size: usize) -> usize

Resolve the effective size.

Arguments

• source_size: the size of the source dataset.

Returns

The resolved size of the wrapper dataset.

Trait Implementations

impl Clone for SizeConfig

fn clone(&self) -> SizeConfig

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SizeConfig

impl Debug for SizeConfig

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

Formats the value using the given formatter.

impl Default for SizeConfig

fn default() -> SizeConfig

Returns the “default value” for a type.

impl From<f64> for SizeConfig

fn from(ratio: f64) -> SizeConfig

Converts to this type from the input type.

impl From<usize> for SizeConfig

fn from(size: usize) -> SizeConfig

Converts to this type from the input type.

impl PartialEq for SizeConfig

fn eq(&self, other: &SizeConfig) -> 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 SizeConfig