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A.3 Char Library

The (scheme char) library provides the procedures for dealing with characters that involve potentially large tables when supporting all of Unicode.

• char-alphabetic?
• char-ci<=?
• char-ci<?
• char-ci=?
• char-ci>=?
• char-ci>?
• char-downcase
• char-foldcase
• char-lower-case?
• char-numeric?
• char-upcase
• char-upper-case?
• char-whitespace?
• digit-value
• string-ci<=?
• string-ci<?
• string-ci=?
• string-ci>=?
• string-ci>?
• string-downcase
• string-foldcase
• string-upcase