A persistent on-disk cache of R objects associated with a directory.

Having a registry attached to a project is very helpful for maintaining state across R sessions without encoding everything in the unreliable .RData file.

Details

To create a registry, simply write r <- registry("some/directory"). You can then use r$set('some/key', some_value) and r$get('some/key') to set and retrieve values (arbitrary R objects).

Methods

initialize(root = NULL)

Initialize a registry.

Examples

not_run({
    r <- registry('some/dir') # Create "some/dir" and make a registry there.
    r$set('some/key', value <- list(1,2,3))
    stopifnot(r$get('some/key'), value)
})