util_check_one_unique_value {dataquieR}

Check for one value only

Description

utility function to identify variables with one value only.

Usage

util_check_one_unique_value(x)

Arguments

x

vector with values

Value

logical(1): TRUE, if – except NA – exactly only one value is observed in x, FALSE otherwise

See Also

Other robustness_functions: util_as_valid_missing_codes(), util_correct_variable_use(), util_empty(), util_ensure_character(), util_ensure_in(), util_ensure_suggested(), util_expect_scalar(), util_fix_rstudio_bugs(), util_is_integer(), util_is_numeric_in(), util_is_valid_missing_codes(), util_match_arg(), util_observations_in_subgroups(), util_only_NAs(), util_stop_if_not(), util_warn_unordered()