Struct OptionalArcMutexWritableKeyPathChain 

pub struct OptionalArcMutexWritableKeyPathChain<Root, MutexValue, InnerValue, SubValue, F, G>
where
    F: for<'r> Fn(&'r Root) -> Option<&'r MutexValue>,
    G: for<'r> Fn(&'r mut InnerValue) -> &'r mut SubValue,
{ /* private fields */ }

A composed writable keypath chain from optional keypath through Arc<Mutex> - functional style Build the chain first, then apply container at get_mut() time

Implementations

impl<Root, MutexValue, InnerValue, SubValue, F, G> OptionalArcMutexWritableKeyPathChain<Root, MutexValue, InnerValue, SubValue, F, G>

where F: for<'r> Fn(&'r Root) -> Option<&'r MutexValue>, G: for<'r> Fn(&'r mut InnerValue) -> &'r mut SubValue, MutexValue: Borrow<Arc<Mutex<InnerValue>>>,

pub fn get_mut<Callback, R>( self, container: &Root, callback: Callback, ) -> Option<R>

where Callback: FnOnce(&mut SubValue) -> R,

Apply the composed keypath chain to a container with mutable access Consumes self - functional style (compose once, apply once)

pub fn then<NextValue, H>( self, next: WritableKeyPath<SubValue, NextValue, H>, ) -> OptionalArcMutexWritableKeyPathChain<Root, MutexValue, InnerValue, NextValue, F, impl for<'r> Fn(&'r mut InnerValue) + 'static>

where H: for<'r> Fn(&'r mut SubValue) -> &'r mut NextValue + 'static, G: 'static, InnerValue: 'static, SubValue: 'static, NextValue: 'static,

Chain with another writable keypath through another level

pub fn chain_optional<NextValue, H>( self, next: WritableOptionalKeyPath<SubValue, NextValue, H>, ) -> OptionalArcMutexWritableOptionalKeyPathChain<Root, MutexValue, InnerValue, NextValue, F, impl for<'r> Fn(&'r mut InnerValue) + 'static>

where H: for<'r> Fn(&'r mut SubValue) -> Option<&'r mut NextValue> + 'static, G: 'static, InnerValue: 'static, SubValue: 'static, NextValue: 'static,

Chain with an optional writable keypath through another level