assertive.types (version 0.0-1)

assert_is_a_string: Is the input of type character?

Description

Checks to see if the input is of type character.

Usage

assert_is_a_string(x, severity = getOption("assertive.severity", "stop"))

assert_is_character(x, severity = getOption("assertive.severity", "stop"))

is_a_string(x, .xname = get_name_in_parent(x))

is_character(x, .xname = get_name_in_parent(x))

Arguments

x

Input to check.

severity

How severe should the consequences of the assertion be? Either "stop", "warning", "message", or "none".

.xname

Not intended to be used directly.

Value

• is_character wraps is.character, providing more information on failure. is_a_string returns TRUE if the input is character and scalar. is_an_empty_string returns TRUE if the input is "". is_numeric_string is vectorised, returning TRUE when the inputs are not NA after conversion to character and then numeric. is_missing_or_empty_string is also vectorised, returning TRUE when the input is "" or NA. The assert_* functions return nothing but throw an error if the corresponding is_* function returns FALSE.

See Also

is.character and is_scalar.

Examples

assert_is_character(letters)
assertive.base::dont_stop(assert_is_character(factor(letters)))