unsetReactive-character-missing-method: Unset Reactive Object (character-missing)

In rappster/reactr: Reactive object bindings with built-in caching and push functionality

Description

See generic: unsetReactive

Usage

## S4 method for signature 'character,missing'
unsetReactive(id, where = parent.frame(), ...)

Arguments

id	character.
where	missing. Internal argument that should not be set explicitly. The value at runtime will correspond to the function that has been provided via argument binding.
...	Further arguments to be passed to subsequent functions/methods.

Value

See method unsetReactive-character-environment-method

Author(s)

Janko Thyson [e-mail]

References

http://github.com/Rappster/reactr

See Also

Generic: unsetReactive, unsetReactiveByUid

Examples

## Not run: 

##------------------------------------------------------------------------------  
## Non-strict get behavior //  
##------------------------------------------------------------------------------

## Set example reactive objects //  
setReactive(id = "x_1", value = 10)
setReactive(id = "x_2", value = function() "object-ref: {id: x_1}")

## Unset //
## --> transforms objects into non-reactive/regular objects again
isReactive("x_1")
unsetReactive("x_1")
isReactive("x_1")

## Inspect //
x_1
identical(x_2, x_1)
x_1 <- 20
x_1
x_2
## --> no reactive relationship to 'x_1' anymore; last cached value returned
isReactive("x_2")

## Reset referenced object again //
setReactive(id = "x_1", value = 50)
x_1
identical(x_2, x_1)
## --> reactive relationship re-established again

## Clean up //
rmReactive("x_1")
rmReactive("x_2")

##------------------------------------------------------------------------------  
## Strict get behavior level 1 //  
##------------------------------------------------------------------------------

setReactive(id = "x_1", value = 10)
setReactive(id = "x_2", value = function() "object-ref: {id: x_1}",
              strict_get = 1)
unsetReactive("x_1")

try(x_2)
## --> warning and NULL

setReactive(id = "x_1", value = 50)
x_2
## --> reactive relationship restored

## Clean up //
rmReactive("x_1")
rmReactive("x_2")

##------------------------------------------------------------------------------  
## Strict get behavior level 2 //  
##------------------------------------------------------------------------------

setReactive(id = "x_1", value = 10)
setReactive(id = "x_2", value = function() "object-ref: {id: x_1}",
              strict_get = 2)

unsetReactive("x_1")
try(x_2)
## --> error

setReactive(id = "x_1", value = 50)
x_2
## --> reactive relationship restored

## Clean up //
rmReactive("x_1")
rmReactive("x_2")


## End(Not run)

rappster/reactr documentation built on May 26, 2019, 11:56 p.m.