chk (version 0.2.0)

chk_flag: Check Flag

Description

Checks if non-missing logical scalar using

is.logical(x) && length(x) == 1L && !anyNA(x)

Good: TRUE, FALSE, NA.

Bad: logical(0), c(TRUE, TRUE), "TRUE", 1, NA_real_.

Usage

chk_flag(x, x_name = NULL)
vld_flag(x)

Arguments

x

The object to check.

x_name

A string of the name of object x or NULL.

Value

The chk_ function throws an informative error if the test fails.

The vld_ function returns a flag indicating whether the test was met.

Functions

• vld_flag: Validate Flag

See Also

Other chk_logical: chk_lgl

Examples

# NOT RUN {
# chk_flag
chk_flag(TRUE)
try(vld_flag(1))

# vld_flag
vld_flag(TRUE)
vld_flag(1)
# }