Short question:
Is is possible for a variable access its name? (maybe this is a perl
question..)
Say: may I define a virtual method so that [%a.name%] prints a ?
-----------------------------------------------------------------
Probably my approach is wrong, anyhow here it is the problem:
I'm developing a plugin (Lcalc) for making computations using Latex
syntax.
The first step is to define a variable,
[% s = Lcalc.def('\frac{1}{2} a t^2', units=>'\metre') %]
(a and t may be other variables defined using Lcalc or standard variables.
They do not need to be defined at this step).
Lcalc.def returns an hash with a numer of methods defined, s.v, s.f,
etc..., see later
At a certain point I need to print the actual value (i.e. computed using
the actual value of a and t) of s
[% s.v %] gives the full precision, say 0.456344531222
I may need to roud it to a certain precision, so I defined
[% s.f %] which gives the "formatted" value of s, the format being "%5.2f%
by default, and it may be changed at definition or when used
[%s.f('%8.2f')%]
Now the problem: I found myself writing often things like
... and so the result is
\[
s = \frac{1}{2} a t^2 \simeq [%s.f%]~\metre.
\]
and since repetitions are bad, I defined [% s.l%] which returns the
original latex definition of s and [%s.u%] which returns the units, so
I write
s = [%s.l%] \simeq [%s.f%]~[$s.u%].
or
[%"s = ${s.l} \\simeq ${s.f} ~ ${s.u}."%]
\______ ________________________________/
V
Now, this is just a template, and I would
like to store it in the variable, just like the format:
[% s.t %]
since I need to print for instance a set of variables:
[FOREACH x = parameters %]
[% x.t %]
[% END %]
but the problem is: how can a variable know its name?
I do not want to explicitly set the template for each variables, just use
a default template.
It works to to use a "fixed name" variable, say $x, and define
the template as :
[%"$x = ${$x.l} \\simeq ${$x.f} ~ ${$x.u}."%]
so that it is easy to write
[% Lcalc.t(a) %]
(just set x=a),
and even
[%Lcalc.t(parameters)%]
(where parameter is a vector)
but I do not see any way of using a syntax like [%a.t%]. Hints?
--
Franco Bagnoli (franchino) <[EMAIL PROTECTED]> ([EMAIL PROTECTED])
virtual location: Dipartimento di Energetica "S. Stecco"
ultra-virtual affiliation: Centro Dinamiche Complesse (CSDC-Firenze)
real location: Dip. Matematica Applicata "G. Sansone", Universita' Firenze,
Via S. Marta, 3 I-50139 Firenze, Italy. Tel. +39 0554796422, fax: +39 055471787
_______________________________________________
templates mailing list
[EMAIL PROTECTED]
http://lists.template-toolkit.org/mailman/listinfo/templates
