problem_type() returns a problem's type, or NULL if the input is
not a problem.
is_problem() tests whether an object is a gradethis problem.
is_tblcheck_problem() tests whether an object is a problem created
by tblcheck.
as_problem() converts a list to a tblcheck_problem.
Usage
problem_type(x)
is_problem(x, type = NULL)
is_tblcheck_problem(x, type = NULL)
as_problem(x)
Arguments
- x
An object
- type
[character(1)]
A problem type
Value
is_problem() and is_tblcheck_problem() return a logicalof length 1.
problem_type() returns a character of length 1.
as_problem() returns a tblcheck_problem.
Details
If type is specified, is_problem() and is_tblcheck_problem() test
whether an object is a problem of the specified type.
Examples
problem_type(vec_check(1, "1"))
#> [1] "class"
is_problem(vec_check(1, "1"), "vector_class")
#> [1] FALSE
is_tblcheck_problem(vec_check(1, "1"), "class")
#> [1] TRUE
