Trait SelectionExpr 

pub trait SelectionExpr: Sealed + Copy { }

Marker trait implemented by field-selection expressions.

Users normally interact with this trait indirectly through field markers such as Sequence and algebraic combinations such as Sequence | Key.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl SelectionExpr for AllFields

impl SelectionExpr for Key

impl SelectionExpr for Name

impl SelectionExpr for NameKey

impl SelectionExpr for NameQuality

impl SelectionExpr for NameQualityKey

impl SelectionExpr for NameSequence

impl SelectionExpr for NameSequenceKey

impl SelectionExpr for NameSequenceQuality

impl SelectionExpr for Quality

impl SelectionExpr for QualityKey

impl SelectionExpr for Sequence

impl SelectionExpr for SequenceKey

impl SelectionExpr for SequenceQuality

impl SelectionExpr for SequenceQualityKey