Most of the commands in IWB I know by now, but there are a few I've never tried - one of which is Linked lists.
Reading the help file I get the idea of them - but does any one use them? - and for what purpose?
I've never used them, so am I missing out not doing so? ???
Thanks,
Andy.
Andy,
Here is a crash course on Linked Lists with C/C++ and Java examples: http://www.geeksforgeeks.org/data-structures/linked-list/ (http://www.geeksforgeeks.org/data-structures/linked-list/).
Converting the examples to IWB should be relatively problem free...
Good luck!
Egil
I use them in Aurel Basic with a big help of LarryMc
and work like a charm,also you may try indirect functions using pointers too.
You may want to look at my Enhanced Linked List Class located here:
http://www.ionicwind.com/forums/index.php?topic=2613.msg22185#msg22185
which gives more control over your list when you build it
Includes full set of examples and Help File
Methods in Class:
_LList Class destructor
AddAfter Adds node after current node
AddBefore Adds node before current node
AddEnd Adds node to end.
AddHead Adds node to beginning
ClearAll Deletes all list nodes
Count Number of nodes in list
Create Creates an instance of the class
DelCurrent Delete current node
ErrMsg Description of error code
GetFirst Get the first node
GetLast Get the last node
GetNext Get the next node
GetPrev Get the previous node
LList Class constructor
ReadData Check current node's data
ReadDataPos Reads data pointer from a specific node <- New in version 1.1
Maybe the simple examples will get you started.
you asked, "Does anyone use them?"
You bet your a$$.
I could never have built the form editor without them.
When a user builds a form I have no idea what control a user is going to add, where it is going to be added, the order they are going to be added/removed.
You wind up with linked list with the basic control id info. You can use additional LL to store location and other parameters in another LL, if you want (not saying I did in this instance)
BUT, with my visual designer, which involves a parent window/dialog and then multiple child dialog/windows all capable of having controls(all capable of having styles\exstyles\messages) and the windows/dialogs themselves having messages to be handled in CASE routines along with tracking styles\exstyles. I use a TON of LINKEDLISTs.
And even LinkedList trees where the LL's data are Structures and one element in the Structure is a pointer to another LL where the data is a Structure and one element is a pointer to another LL where the data is a Structure and one element is a pointer to another List which is a Structure. Do-Da!
Yes LarryMc have a right
almost there is no better data container when we talk about dynamic range of container 8)
Thanks guys for the explanation and links.
Seems they can be very useful so a bit of reading / experiment is in order.
Thanks!
Andy.
:)