Enum Constraint

pub enum Constraint {
    None,
    UnitOnly,
    UnitAndAbove,
    UnitAndBelow,
    Custom(Vec<Prefix>),
}

Specifies a constraint on the SI Prefix.

Variants

None

Allows all prefixes from Yocto to Yotta.

Note: having a None variant proves ergonomic in the context of this library.

UnitOnly

Only allows the Unit prefix, effectively preventing scaling.

UnitAndAbove

Only allows prefixes from Unit to Yotta.

UnitAndBelow

Only allows prefixes from Yocto to Unit.

Custom(Vec<Prefix>)

Only allows the specified prefixes (should be sorted in ascending exponent order).

Trait Implementations

impl AsRef<Constraint> for Constraint

fn as_ref(&self) -> &Self

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

impl Clone for Constraint

fn clone(&self) -> Constraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Constraint

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

Formats the value using the given formatter.

impl PartialEq for Constraint

fn eq(&self, other: &Constraint) -> 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 Eq for Constraint

impl StructuralPartialEq for Constraint