> (authors "Charles Darwin")

"Charles Darwin"
> (authors "Thomas Jefferson""Alexander Hamilton")

'("Thomas Jefferson" " and " "Alexander Hamilton")
> (authors "Ed""Ed""Eddy")

'("Ed" ", " "Ed" ", and " "Eddy")

Always use the Oxford comma. Remember the Maine truck drivers! (settlement)

procedure
( authors* s*)→element?
s*:(listof string? )

procedure
( oxfordize s*)→element?
s*:(listof string? )

Same as (apply authors s*).

procedure
( sf x)→element?
x:pre-content?

Renders the given content in "sfstyle" (serif-style).

procedure
( parag s...)→element?
s:string?

Renders the given strings as a paragraph title.

procedure
( format-url url)→element?
url:string?

Renders a clickable URL. Strips prefixes like "www." and "http://".

procedure
( integer->word i[#:title?title?])→string?
i:exact-integer?
title?:boolean? =#false

Returns the English word for the given integer.

Examples:

> (integer->word 0)

"zero"
> (integer->word 42)

"forty-two"
> (integer->word -8675309)

"negative-eight-million-six-hundred-seventy-five-thousand-three-hundred-nine"

The current implementation fails unless (abs i) is less than 1 quadrillion.

procedure
( Integer->word i)→string?
i:exact-integer?

Alias for (integer->word i#:title?#true).

procedure
( natural->roman-numeral n)→string?
n:exact-positive-integer?

Wikipedia: roman numeral

Converts a positive number to a roman numeral in the standard subtractive form.

Examples:

> (natural->roman-numeral 2)

"II"
> (natural->roman-numeral 4)

"IV"
> (natural->roman-numeral 54)

"LIV"
> (natural->roman-numeral 101)

"CI"
> (natural->roman-numeral 1555)

"MDLV"

procedure
( roman-numeral->natural x)→exact-nonnegative-integer?
x:(or/c string? (listof roman-symbol? ))

Converts a roman numeral to a natural number. Accepts subtractive or additive numbers, and the strings "nulla" and "N".

Examples:

> (roman-numeral->natural "V")

5
> (roman-numeral->natural "IIII")

4
> (roman-numeral->natural "XLIX")

49
> (roman-numeral->natural "nulla")

0

procedure
( natural->roman-symbol* n)→(listof roman-symbol? )
n:exact-positive-integer?

Convert a positive number to a sequence of roman symbols.

Example:

> (natural->roman-symbol* 44)

'(X L I V)

procedure
( roman-symbol? x)→boolean?
x:any/c

Predicate for symbols that correspond to a roman numeral value.

Examples:

> (roman-symbol? 'I)

#t
> (roman-symbol? 'II)

#f
> (andmap roman-symbol? '(IVXLCDM))

#t
> (roman-symbol? 17)

#f

syntax
x-axes

syntax
y-axes

syntax
x-axis

syntax
y-axis

syntax
etal

Each identifier id renders like the string "id", except that it might be prettier (avoid bad line breaks, bad spacing).

2LaTeX Renderer Utilities🔗 i

(require scribble-abbrevs/latex ) package: scribble-abbrevs

Utilities for Scribble code that generates LaTeX output.

syntax
appendix

Typesets \appendix in a paragraph with the 'pretitle style. In LaTeX, this marks the current "section" as the start of an appendix.

syntax
noindent

Typesets as \noindent{}. Good for suppressing LaTeX paragraph indentation.

.... end of previous paragraph.

@|noindent|Beginning of un-indented paragraph.

procedure
( sc x)→element?
x:pre-content?

Renders the given content in small caps style.

procedure
( exact s...)→element?
s:string?

Renders the given strings as-is in the output.

Example:

> (exact "\\frac{2}{3}")

(element (style "relax" '(exact-chars)) '("\\frac{2}{3}"))

procedure
( $ s...)→element?
s:string?

Same as (exact "$"s... "$").

procedure
( definition termdef-elem*...)→paragraph?
term:string?
def-elem*:pre-content?

Renders an un-numbered definition for a technical term.

Example:

> (definition "rose""A rose is a rose is a rose is a rose.")

(paragraph

(style #f '())

(list

(element (style "relax" '(exact-chars)) '("\\vspace{1ex}\n"))

(element 'bold '("Definition"))

(list

(element #f (list " (" (element 'emph '("rose")) ") "))

"A rose is a rose is a rose is a rose.")

(element (style "relax" '(exact-chars)) '("\\vspace{1ex}\n"))))

This usually looks good to me.

procedure
( Section-ref tag)→element?
tag:string?

procedure
( section-ref tag)→element?
tag:string?

NOTE: This function is deprecated; use secref , instead.

Renders the section number for tag prefixed with the word "Section" (respectively, "section").

These functions assume that the following LaTeX command appears somewhere between the definition of Scribble’s SecRef (see Base Latex Macros) and the first occurrence of section-ref :

\renewcommand{\SecRef}[2]{#1}

3Documentation Renderer Utilities🔗 i

(require scribble-abbrevs/manual )

package: scribble-abbrevs

Utilities for Scribble code that generates Racket documentation.

procedure
( tech/guide pre-content...)→element?
pre-content:pre-content?

Similar to tech , but links to The Racket Guide.

procedure
( tech/reference pre-content...)→element?
pre-content:pre-content?

Similar to tech , but links to The Racket Reference.

procedure
( racketfile filename)→element?
filename:path-string?

Typesets the contents of the given file as if its contents were wrapped in a racketblock .

4Pict Utilities🔗 i

(require scribble-abbrevs/pict ) package: scribble-abbrevs

procedure
( codeblock-pict/numbers code
#:titletitle
#:startstart
#:keep-lang-line?keep-lang) → pict?
code:string?
title:#f
start:1
keep-lang:#t

Similar to codeblock , but with line numbers.

Examples:

> (require scribble-abbrevs/pict)

> (codeblock-pict/numbers
(string-join'("#lang racket/base"
"(require scribble-abbrevs/pict)"
"(codeblock-pict/numbers \"(+ 2 \n3)\")")
"\n"))

[画像:image]

procedure
( add-border p
#:margin-topmargin-top
#:margin-bottommargin-bottom
#:margin-leftmargin-left
#:margin-rightmargin-right) → pict?
p:pict?
margin-top:2
margin-bottom:2
margin-left:2
margin-right:2

Adds a thin black border around the given pict.