Make a reactive variable — makeReactiveBinding
makeReactiveBinding(symbol, env = parent.frame())
Arguments
symbol |
Name of variable to make reactive, as a string. |
---|---|
env |
Environment in which to create binding. Expert use only. |
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
reactiveConsole(TRUE) a <- 10 makeReactiveBinding("a") b <- reactive(a * -1) observe(print(b())) a <- 20 a <- 30 reactiveConsole(FALSE)