makeReactiveBinding {shiny} | R Documentation |
Make a reactive variable
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).
Usage
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. |
Value
None.
Examples
reactiveConsole(TRUE)
a <- 10
makeReactiveBinding("a")
b <- reactive(a * -1)
observe(print(b()))
a <- 20
a <- 30
reactiveConsole(FALSE)
[Package shiny version 1.9.1 Index]