rx_calc_with_previous: Reactive calculation with previous value

In jcheng5/rxtools: Tools and helpers for reactive programming with Shiny

Description

Use this variant of rx_calc when your logic depends on the previous value you generated. For example, you might want to accumulate some state over each invalidation; or in some exceptional circumstances you may want to return the previous value itself with no changes.

Usage

rx_calc_with_previous(func, initialValue = NULL)

Arguments

func	A function that takes a single parameter. Each time this function is called, it will be passed its previous return value.
initialValue	The value to pass to the function the first time it is called.

Value

An rx_calc based on the function.

jcheng5/rxtools documentation built on May 18, 2019, 10:22 p.m.