7.7
22 Pretty-Printing
NOTE: This library is deprecated; use racket/pretty, instead.
| (require unstable/pretty) | package: unstable-pretty-lib |
This module provides tools for pretty-printing.
procedure
(pretty-format/write x [columns]) → string?
x : any/c
columns : (or/c exact-nonnegative-integer? 'infinity) = (pretty-print-columns)
This procedure behaves like pretty-format
, but it formats values
consistently with write instead of print.
Examples:
> (struct both [a b] #:transparent) > (pretty-format/write (list (both (list 'a 'b) (list "a" "b")))) "(#(struct:both (a b) (\"a\" \"b\")))\n"
procedure
(pretty-format/display x [columns]) → string?
x : any/c
columns : (or/c exact-nonnegative-integer? 'infinity) = (pretty-print-columns)
This procedure behaves like pretty-format, but it formats values
consistently with display instead of print.
Examples:
> (struct both [a b] #:transparent) > (pretty-format/display (list (both (list 'a 'b) (list "a" "b")))) "(#(struct:both (a b) (a b)))\n"
procedure
(pretty-format/print x [columns]) → string?
x : any/c
columns : (or/c exact-nonnegative-integer? 'infinity) = (pretty-print-columns)
This procedure behaves the same as pretty-format, but is named
more explicitly to describe how it formats values. It is included for
symmetry with pretty-format/write and pretty-format/display.
Examples:
> (struct both [a b] #:transparent) > (pretty-format/print (list (both (list 'a 'b) (list "a" "b")))) "(list (both '(a b) '(\"a\" \"b\")))\n"
The subsequent bindings were added by Vincent St-Amour <stamourv@racket-lang.org>.
procedure
(break-lines s [columns]) → string?
s : string? columns : exact-nonnegative-integer? = (pretty-print-columns)
Splits the string s into multiple lines, each of width at most
columns, splitting only at whitespace boundaries.
Example:
> (display (break-lines "This string is more than 80 characters long. It is 98 characters long, nothing more, nothing less."))
This string is more than 80 characters long. It is 98 characters long,
nothing more, nothing less.