Deleting elements in an array

[tum_twish]

Is it possible to delete an element (parition)of an array (ie. make it no value) given the index (subscript) of the element?

[Martin]

Nope. Just set it to a flag value that you know isn't going to be used, or use linked lists

[tum_twish]

what r linked lists?

[Martin]

It's a really efficient way to store data.

Basically you have a pointer to the first memory location of a record, and then each subsequent record has a pointer to the next one in line

code:

type list :    record      x,y : int %just to make the record hold something      next : ^list %Pointer to the next node    end record

you then have a variable

code:

var first : ^list

and set that = to nil. Then, whenever you want to add a new element to the list, you allocate a new memory location for a new node, and add that to the end of the node. I'll write a tutorial on this later.

[Blade]

i kinda thought he was talking about flexible arrays..

[PaddyLong]

flexible arrays wouldn't really work... they just resize the array, not reset it...