Enum Constraint 

pub enum Constraint {
    Length(u16),
    Ratio(u32, u32),
    Min(u16),
    Max(u16),
    Fill,
}

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Variants

Length(u16)

固定大小

Ratio(u32, u32)

剩余空间的比例

Min(u16)

尽可能小

Max(u16)

尽可能大

Fill

填充剩余空间

Trait Implementations

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 Copy for Constraint

impl Eq for Constraint

impl StructuralPartialEq for Constraint