OnLogging<T> typedef

OnLogging<T> = String Function(T prv, T cur)?

FlowR --- Basic mixin --- FlowrMx 核心基础功能: 使用Stream传递数据 UpdatableMx 提供 update 方法, 自动捕获异常 LoggableMx 打印putError的异常于StackTrace before invoke FlowRMx.put, build log content

Implementation

/// before invoke [FlowRMx.put], build log content
typedef OnLogging<T> = String Function(T prv, T cur)?;