Hi Tony.

13-Jan-04 00:25:42, Tony Master wrote to Scott Adams


 TM> |03Quoting message from |11Scott Adams |03to |11Tony Master
 SA>> What level of knowledge do you know about them now? I ask so not
 SA>> to go WAY basic on you :)

 TM> i know they point to a spot in memory

The trick is getting them to point to a convenient spot.

there's a number of ways to do that


 NIL is a special pointer constant that is used wehn you want a pointer to
     point nowhere

 {at} can be used to point one at an existing variable

 new can be used to create an anonymous variable and point a pointer at it

 dispose is the opposite of new and deestroys an anonymous variable if you
         have a pointer to it



Where it gets interesting is when you make a record that contains a
pointer to a record of the same type.... then you can create a chain of
records, of any length and add or remove records at either end or in the
middle of the chain, this is called a linked list.

if you add more pointers to the record you can have a branching chain etc...

 -=> Bye <=-

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