6.3 mischief/symbol: Symbols
| (require mischief/symbol) | package: mischief-dev |
This module re-exports symbol=? from racket/bool and format-symbol from racket/syntax.
procedure
x : symbol? y : symbol?
procedure
x : symbol? y : symbol?
procedure
x : symbol? y : symbol?
procedure
x : symbol? y : symbol?
Compare two symbols lexicographically, essentially composing
symbol->string with string<?, string>?,
string<=?, and string>=?.
Examples:
> (symbol<? 'bat 'cat) #t
> (symbol<? 'cat 'cat) #f
> (symbol<? 'cat 'bat) #f
> (symbol>? 'bat 'cat) #f
> (symbol>? 'cat 'cat) #f
> (symbol>? 'cat 'bat) #t
> (symbol<=? 'bat 'cat) #t
> (symbol<=? 'cat 'cat) #t
> (symbol<=? 'cat 'bat) #f
> (symbol>=? 'bat 'cat) #f
> (symbol>=? 'cat 'cat) #t
> (symbol>=? 'cat 'bat) #t
procedure
(symbol-upcase sym) → symbol?
sym : symbol?
procedure
(symbol-downcase sym) → symbol?
sym : symbol?
procedure
(symbol-titlecase sym) → symbol?
sym : symbol?
procedure
(symbol-foldcase sym) → symbol?
sym : symbol?
Convert the case of a symbol’s name, by analogy with string-upcase,
string-downcase, string-titlecase, and
string-foldcase.
Examples:
> (symbol-upcase 'Two-words) 'TWO-WORDS
> (symbol-downcase 'Two-words) 'two-words
> (symbol-titlecase 'Two-words) 'Two-Words
> (symbol-foldcase 'Two-words) 'two-words