You don't need IDs, you can simply store pointers.
The problem is with your display code. Your display code should check if the player object it's given to display is NULL or not. If it's NULL, display nothing. Just like my FOR..NEXT loop example above checks for NULL for every object it loops over.
Yes, it'll blow away the data you're trying to copy because you're passing the pointer to the copied data to Delete. Check out the following example - there is only one object created (New foo), but three pointers (a, b, c) which all point to it. When Delete is called, the object is destroyed and the pointers will all point to nothing.
p\league[0]\team[0]\player[0]\team = p\league[0]\team[0]
I actually did try the NULL thing (setting to null once I`ve copied it) but it calls an error when i was trying to output the values of [0,0,0] to screen, rather than printing nothing.
The problem is with your display code. Your display code should check if the player object it's given to display is NULL or not. If it's NULL, display nothing. Just like my FOR..NEXT loop example above checks for NULL for every object it loops over.
function display_player_by_indices(league_index, team_index, player_index) found_player = false this_league.league = p\league[league_index] if this_league <> NULL then this_team.team = this_league\team[team_index] if this_team <> NULL then this_player.player = this_team\player[player_index] if this_player <> NULL then found_player = true print this_player\name$ endif endif endif if found_player = false then print "" endif end function
;remove orig data
Delete p\league[0]\team[0]\player[0]
p\league[0]\team[0]\player[0]=New player
Does this cause any problems I`m not aware of, memory etc?
Delete p\league[0]\team[0]\player[0]
p\league[0]\team[0]\player[0]=New player
Does this cause any problems I`m not aware of, memory etc?
Yes, it'll blow away the data you're trying to copy because you're passing the pointer to the copied data to Delete. Check out the following example - there is only one object created (New foo), but three pointers (a, b, c) which all point to it. When Delete is called, the object is destroyed and the pointers will all point to nothing.
Open in online IDEtype foo field name$ end type a.foo = new foo a\name$ = "red" b.foo = a c.foo = a print a\name$ b\name$ = "yellow" print a\name$ b=null print a\name$ delete c print a\name$ ; error!