CallbackParam-class function

The CallbackParam class.

This class represents a parameter whose value is obtained by evaluating a function. class

CallbackParam(callback, dim = NULL, ...)

## S4 method for signature 'CallbackParam'
value(object)

Arguments

• callback: A callback function that generates the parameter value.
• dim: The dimensions of the parameter.
• ...: Additional attribute arguments. See Leaf for details.
• object: A CallbackParam object.

Slots

• callback: A callback function that generates the parameter value.
• dim: The dimensions of the parameter.

Examples

x <- Variable(2)
fun <- function() { value(x) }
y <- CallbackParam(fun, dim(x), nonneg = TRUE)
get_data(y)