Re: Changing the value of a variable

[Brandon Ibach <bibach@xxxxxxxxxxxxxx>]

Quoting joseph, Gershon <Gershon_joseph@xxxxxxxxxxxxx>:
> I appear to have solved my problem regarding resetting the numbering when a
> specific element is encountered. For fellow newbies, the following is my
> code. Experts will undoubtedly suggest improvements ;-)
> 
   Yes, (element-number-list) is definitely the way to go.  I was
actually playing with this a bit when your email arrived. :)  I do
have a suggestion for one portion here:

> 		(literal	; Generated text on table title
> 			"Table "
> 			(format-number (ancestor-child-number "chap") "1")
> 			"-"
> 			(format-number (list-ref (element-number-list (list
> "chap" "table") (current-node)) 1) "1")
> 			": "
> 		)
> 
   This could be done more simply with:
	(literal
	  "Table "
	  (format-number-list (element-number-list
				'("chap" "table") (current-node)) "1" "-")
	  ": "
	)
   Basically, you're unnecessarily calculating the chapter number
with (ancestor-child-number), as this number is calculated for you by
(element-number-list).  Just have (format-number-list) concatenate the
list returned by (element-number-list).
   And, in the interest of reusable code, consider this variation:

(define (fmt-el-list elist #!key (fmt "1") (sep "-") (node (current-node)))
  (format-number-list (element-number-list elist node) fmt sep))

... (literal "Table " (fmt-el-list '("chap" "table")) ": ")

-Brandon :)


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