Assert that there is only a single value in a particular column

Assert that there is only a single value in a particular column

Usage

assert_single_value(x, arg = "x", call = rlang::caller_env(), add_err_msg = "")

Arguments

x

the vector to check

arg

the name of the vector to check

call

Calling environment to be passed to cli::cli_abort() for traceback.

add_err_msg

string containing an additional error message, default is the empty string ("")

Value

NULL, invisibly