chk (version 0.2.0)

chk_unused: Check/Validate ... Unused or Used

Description

Checks/validates if ... is unused or used.

Usage

chk_unused(...)
vld_unused(...)
chk_used(...)
vld_used(...)

Arguments

...

Additional arguments.

Value

The chk_ functions throw an informative error if the test fails. The vld_ functions return a flag indicating whether the test was met.

Functions

• chk_unused: Check ... Unused

  Checks if is ... unused using vld_unused().

• vld_unused: Validate ... Unused

  Validates if is ... unused using

  length(list(...)) == 0L.

• chk_used: Check ... Used

  Checks if is ... used using vld_unused().

• vld_used: Validate ... Used

  Validates if ... used using

  length(list(...)) != 0L.

See Also

length()

list()

...

Examples

# NOT RUN {
# chk_unused
fun <- function(x, ...) {
  chk_unused(...)
  x
}
fun(1)
try(fun(1, 2))

# vld_unused
fun <- function(x, ...) {
  vld_unused(...)
}
fun(1)
try(fun(1, 2))

# chk_used
fun <- function(x, ...) {
  chk_used(...)
  x
}
try(fun(1))
fun(1, 2)

# vld_used
fun <- function(x, ...) {
  vld_used(...)
}
fun(1)
fun(1, 2)
# }