dispatchIo

bool dispatchIo(Slot,  DispatchFn,  RemoveFn,  ErrorFn)(
       Token token,  IoReady ready,
       scope  Slot[]  slots,
       scope  DispatchFn dispatchFn,
       scope  RemoveFn removeFn,
       scope  ErrorFn errorFn)

@trusted nothrow

Dispatch an I/O watcher callback.

Validates the watcher is an enabled I/O watcher, invokes its callback, and handles pending removal.

Parameters

`token`	Token of the watcher.
`ready`	I/O readiness flags.
`slots`	Watcher slot array.
`dispatchFn`	Callback: `(ref Slot, Token, IoReady) => void`.
`removeFn`	Callback: `(uint index) => void`.
`errorFn`	Callback: `(Token, Exception) => void`.

Returns

true if the callback was invoked.