Check Number — chk_number • chk

Checks if non-missing numeric scalar using

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

Pass: 1, 2L, log(10), -Inf

Fail: "a", 1:3, NA_real_

chk_number(x, x_name = NULL)

vld_number(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 or returns the original object if successful so it can used in pipes.

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

Functions

vld_number(): Validate Number

See also

For more details about the use of this function, please read the article vignette("chk-families").

Examples

# chk_number
chk_number(1.1)
try(chk_number(TRUE))
#> Error in eval(expr, envir) : 
#>   `TRUE` must be a number (non-missing numeric scalar).
# vld_number
vld_number(1.1)
#> [1] TRUE