Re: [Vala] foreach performance

["Phil Housley" <undeconstructed gmail com>]

2008/12/16 Кутейников Дмитрий <kuteynikov gmail com>:
> Hello!
> Why there are no operator to remove current object in foreach block?
> I have to write
>
>             foreach(Components.Obj obj in m_objects)
>             {
>                 if(obj.item.x == x && obj.item.y == y)
>                 {
>                     Events.disappear(obj);
>                     m_objects.remove(obj);  //  :(
>                     return obj;
>                 }

An object can be iterable with a foreach block with having method for
removing items, so this can't be automatic.  Also, many potentially
iterable objects have no concept of removing items anyway.

Whether there will be a performance issue depends on the type of
collection.  Something array backed won't cost anything extra,
something linked list backed will.

-- 
Phil Housley