Trait Readable 

pub trait Readable<Root, Value> {
    // Required method
    fn get(&self, root: Root) -> Option<Value>;
}

Read-only keypath: navigate from Root to Value.

Required Methods

fn get(&self, root: Root) -> Option<Value>

Getter path. Returns None when navigation fails.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<R, Lock, Mid, V, Root, LockValue, MidValue, Value, MutRoot, MutLock, MutMid, MutValue, G1, S1, L, G2, S2> Readable<Root, Value> for SyncKp<R, Lock, Mid, V, Root, LockValue, MidValue, Value, MutRoot, MutLock, MutMid, MutValue, G1, S1, L, G2, S2>

where Root: Borrow<R>, LockValue: Borrow<Lock>, MidValue: Borrow<Mid>, Value: Borrow<V>, MutRoot: BorrowMut<R>, MutLock: BorrowMut<Lock>, MutMid: BorrowMut<Mid>, MutValue: BorrowMut<V>, G1: Fn(Root) -> Option<LockValue>, S1: Fn(MutRoot) -> Option<MutLock>, L: LockAccess<Lock, MidValue> + LockAccess<Lock, MutMid>, G2: Fn(MidValue) -> Option<Value>, S2: Fn(MutMid) -> Option<MutValue>,

fn get(&self, root: Root) -> Option<Value>

impl<R, V, V2, Root, Value, Value2, MutRoot, MutValue, MutValue2, First, Second> Readable<Root, Value2> for KpThenSyncKp<R, V, V2, Root, Value, Value2, MutRoot, MutValue, MutValue2, First, Second>

where First: SyncKeyPathLike<Root, Value, MutRoot, MutValue>, Second: SyncKeyPathLike<Value, Value2, MutValue, MutValue2>,

fn get(&self, root: Root) -> Option<Value2>

Implementors

impl<R, V, Root, Value, MutRoot, MutValue, G, S> Readable<Root, Value> for Kp<R, V, Root, Value, MutRoot, MutValue, G, S>

where Root: Borrow<R>, Value: Borrow<V>, MutRoot: BorrowMut<R>, MutValue: BorrowMut<V>, G: Fn(Root) -> Option<Value>, S: Fn(MutRoot) -> Option<MutValue>,