[REBOL] Re: Replacing placeholders?
From: Tom:Conlin:gma:il at: 8-Aug-2007 18:36
Tim Johnson wrote:
> On Wednesday 08 August 2007, Carlos Lorenz wrote:
>> Kai,
>>
>> I am afraid a cannot go further on advising you since I am not a heavy user
>> of pdf-maker.
>> Anyway are you using COMPOSE to evaluate data and surrounding them with
>> parens as Tim said?
> <blush> I've been extremely busy here and I've got a little time for this -
> first - a disclaimer - I whipped up that code in preperation for
> implementing it for a client. But my partner ended doing the functionality
> with perl. Furthermore, I've deleted much of *this* thread from my mailer.
>
> Let me suggest that you just play with compose for a bit, without your
> target in mind. Just a have a bit of fun with it. What compose allows you to
> do is to create a data structure, evaluate it as much as you like and
> change values within that data structure targeted by parenthesis.
>
> Since I am not myself an expert with compose, and if I don't write rebol for
> a week, I get behind the curve even more, let me propose a problem and
> perhaps the solution will edify me and help you:
>
> Here's the problem, define a block with a parenthesized word and evaluate it
> as a place holder
> names: ["Tim" "Carlos" "Kai"]
> == ["Tim" "Carlos" "Kai"]
>>> template: [My name is (name)]
> == [My name is (name)]
>>> foreach name names[print compose template]
> ** Script Error: name has no value
> ** Near: name
> ;; I *don't* know the solution myself, but finding it will be most helpful for
> ;; both of us
> cheers
> tim
names: ["Tim" "Carlos" "Kai"]
template: [My name is (first names)]
while[not tail? names][probe compose template names: next names]
[My name is "Tim"]
[My name is "Carlos"]
[My name is "Kai"]
== []
names: head names
while[not tail? names][print form compose template names: next names]
My name is Tim
My name is Carlos
My name is Kai
== []
>>
