get.par: Get a parameter from the current context
In thtrieu/edmsyn: Educational Data Synthesizer

Description Usage Arguments Value Author(s) See Also Examples

This function generates (if needed) the required target from a context

1	get.par(target, pars, progress = FALSE)

`target`	a character string indicates the target's name
`pars`	an object of `context` class describes the given context
`progress`	a boolean value indicates if the generating process should be printed or not

if success, a list with two components

`value`	value of the target
`context`	the corresponding context

if not success, NULL

Hoang-Trieu Trinh, thtrieu@apcs.vn

gen

# Declare a context
p <- pars(students = 20, items = 15)
# Regular way to access information inside a context
p$students # returns 20
# get.par is a alternative
get.par("students", p)
# However, it is not trivial to generate a skill mastery matrix from p
p$M # NULL returned
# get.par can do this
M <- get.par("M", p, progress = TRUE)
print(M)