From: Otared Kavian <otared@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: A macro which gives a random name
Date: Sat, 18 Apr 2015 18:55:41 +0200 [thread overview]
Message-ID: <6DC048B9-D53F-46B3-973D-C25FD93D3C27@gmail.com> (raw)
Hi everyone,
In the example below I define a macro which chooses at random a name from a list of names. But I wonder whether this can be done in a more clever way without using a numerical macro created with math.random in Lua. The shortcoming of the macro below is that before hand I must know the nomber of elements in the list of names (for instance 5 in the example below), while it may happen that I need to create as many as random names that there are elements in the list, but sometimes I don’t know what is this number.
Thanks for any insight and help.
Best regards: OK
%%%% begin random-names.tex
\setuprandomize[2015] % set a seed
\starttext
\startluacode
Name = {'F', 'G', 'u', 'v', 'W'}
\stopluacode
\define[3]\RandomName{%
\setevalue{Named#1}{\ctxlua{tex.print(math.random(#2,#3))}}}
\define\RandomFunctionName{\ctxlua{tex.print(Name[\NamedFunctionNumber])}}
\dorecurse{10}{\RandomName{FunctionNumber}{1}{5}%
Give an example of a function $\RandomFunctionName : {\Bbb R} \longrightarrow {\Bbb R}$ which has a derivative only at the origin, and such that $\RandomFunctionName(0) = 1$.\par \hairline\par}
\stoptext
%%%% begin random-names.tex
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next reply other threads:[~2015-04-18 16:55 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-18 16:55 Otared Kavian [this message]
2015-04-18 17:23 ` Wolfgang Schuster
2015-04-18 19:16 ` Otared Kavian
2015-04-18 20:24 ` Otared Kavian
2015-04-18 20:36 ` Hans Hagen
2015-04-19 7:51 ` Otared Kavian
2015-04-19 9:55 ` Hans Hagen
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