upper-case-p
character => generalized-boolean
lower-case-p
character => generalized-boolean
both-case-p
character => generalized-boolean
character--a character.
generalized-boolean--a generalized boolean.
These functions test the case of a given character.
upper-case-p returns true if character is an uppercase character; otherwise, returns false.
lower-case-p returns true if character is a lowercase character; otherwise, returns false.
both-case-p returns true if character is a character with case; otherwise, returns false.
(upper-case-p #\A) => true (upper-case-p #\a) => false (both-case-p #\a) => true (both-case-p #\5) => false (lower-case-p #\5) => false (upper-case-p #\5) => false ;; This next example presupposes an implementation ;; in which #\Bell is an implementation-defined character. (lower-case-p #\Bell) => false
Should signal an error of type type-error if character is not a character.