Struct ArcMutexWritableOptionalKeyPathChain 

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

A composed writable optional keypath chain through Arc<Mutex> - functional style

Implementations

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

where F: for<'r> Fn(&'r Root) -> &'r MutexValue, G: for<'r> Fn(&'r mut InnerValue) -> Option<&'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 (if value exists) Consumes self - functional style (compose once, apply once)