assert_all_are_single_characters

assert_any_are_single_characters

is_single_character

Is the input a single character?
 
See <code><a href="/link/is_single_character?package=assertive&version=0.3-2&to=assertive.strings" rd-options="assertive.strings" data-mini-rdoc="assertive.strings::is_single_character">is_single_character</a></code>.

Lots of predicates (is_* functions) to check the state of your
    variables, and assertions (assert_* functions) to throw errors if they
    aren't in the right form.

is_single_character: Is the input a single character? See `is_single_character`.

Description

Arguments