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Make a reactive variable

makeReactiveBinding(symbol, env = parent.frame())

Arguments

symbol A character string indicating the name of the variable that should be made reactive
env The environment that will contain the reactive variable

Value

None.

Description

Turns a normal variable into a reactive variable, that is, one that has reactive semantics when assigned or read in the usual ways. The variable may already exist; if so, its value will be used as the initial value of the reactive variable (or NULL if the variable did not exist).

Examples

## Not run: ------------------------------------ # a <- 10 # makeReactiveBinding("a") # b <- reactive(a * -1) # observe(print(b())) # a <- 20 ## ---------------------------------------------