str2str (version 1.0.0)

is.cnumeric: Test for Character Numbers

Description

is.cnumeric returns whether an object is a character vector with all number strings.

Usage

is.cnumeric(x, warn = FALSE)

Value

logical vector with length 1 specifying whether `x` is a character vector with all number strings.

Arguments

x

object whose structure is desired to be tested.

warn

logical vector with length 1 specifying whether warnings should be printed due to coercing a character vector that is not all number strings (i.e., one reason the return object could be `FALSE`).

Details

is.cnumeric is useful for ensuring that converting a character vector to a numeric vector is safe (i.e., won't introduce NAs).

Examples

is.cnumeric(x = c("1","2","3")) # returns TRUE
is.cnumeric(x = c("1","number","3")) # returns FALSE
is.cnumeric(x = c("1","number","3"), warn = TRUE) # includes the warning
is.cnumeric(x = c(1,2,3)) # returns false because not a character vector