OpenEuphoria

Re: match() in depth!

• Posted by Kat <gertie at PELL.NET> Feb 24, 2002
• 411 views

On 25 Feb 2002, at 14:01, Derek Parnell wrote:

> 
> Hi Kat,
> I'm not quite sure what you are driving at either.
> 
> When you run this code of yours, what do you get displayed?
> 
> When I run it, it only reports that 'is' is found. And this is exactly what I
> would have expected.
> 
> My assumption is that 'parse()' converts :
> 
>  "this is a test of match()"
> 
> to:
> 
>  {"this","is","a","test","of","match()"}

Correct.
 
> In which case the match({"is"},test) call will return 2. Because "is" is the
> second element of the test sequence.

> In which case the match({"s"},test) call will return 0. Because "s" is not any
> of the elements in the test sequence.
> 
> What did you find surprising with your test?

I had never seen the match({"is"},test) in any code i have read in the 
archives. I have seen match("is",test). Frankly, the use of {} occasionally 
confuses me, and to put the "is" inside the { } told me it was a nested 
sequence, and should have returned nothing, zero, or an error,, because the 
help files say all the parms for match() are to be sequences, and a nested 
seq as the first parm barely makes sence. But i was looking for a way to get 
some code running faster, and tried it.

Kat


> ------
> Derek.
> 
> 
> 25/02/2002 1:43:42 PM, Kat <gertie at PELL.NET> wrote:
> 
> >
> >On 24 Feb 2002, at 22:52, rforno at tutopia.com wrote:
> >
> >> 
> >> OK. But what is the strange thing about it? I don't understand.
> >
> >The {bracketed} and "quoted" parts in the examples below. 
> >
> >Kat
> >
> > 
> >> ----- Original Message ----- 
> >> From: "Kat" <gertie at PELL.NET> 
> >> To: "EUforum" <EUforum at topica.com>
> >> Sent: Sunday, February 24, 2002 12:49 AM
> >> Subject: match() in depth!
> >> 
> >> 
> >> > I didn't know we could do this!
> >> > 
> >> > include strtok.e
> >> > with trace
> >> > sequence test
> >> > 
> >> > test = "this is a test of match()"
> >> > test = parse(test,32)
> >> > 
> >> > 
> >> > if match({"is"},test) then 
> >> >  puts(1,"found is\n") 
> >> > end if
> >> > 
> >> > if match({"s"},test) then 
> >> >  puts(1,"found s\n") 
> >> > end if
> >> > 
> >> > trace(1)
> >> > abort(0)
> >> > 
> >> > 
> ---------
> Cheers,
> Derek Parnell 
> 
> 
> 
>