THashList

 Create a THashList object. Capacity is the initial hashtable capacity
 (i.e. number of slots), by default kInitHashTableCapacity = 17, and
 rehash is the value at which a rehash will be triggered. I.e. when the
 average size of the linked lists at a slot becomes longer than rehash
 then the hashtable will be resized and refilled to reduce the collision
 rate to about 1. The higher the collision rate, i.e. the longer the
 linked lists, the longer lookup will take. If rehash=0 the table will
 NOT automatically be rehashed. Use Rehash() for manual rehashing.
 WARNING !!!
 If the name of an object in the HashList is modified, The hashlist
 must be Rehashed

 For backward compatibility only. Use other ctor.

 Delete a hashlist. Objects are not deleted unless the THashList is the
 owner (set via SetOwner()).

 Add object at the beginning of the list.

 Add object at the beginning of the list and also store option.
 Storing an option is useful when one wants to change the behaviour
 of an object a little without having to create a complete new
 copy of the object. This feature is used, for example, by the Draw()
 method. It allows the same object to be drawn in different ways.

 Add object at the end of the list.

 Add object at the end of the list and also store option.
 Storing an option is useful when one wants to change the behaviour
 of an object a little without having to create a complete new
 copy of the object. This feature is used, for example, by the Draw()
 method. It allows the same object to be drawn in different ways.

 Insert object before object before in the list.

 Insert object before object before in the list.

 Insert object after object after in the list.

 Insert object after object after in the list.

 Insert object at location idx in the list.

 Return the average collision rate. The higher the number the longer
 the linked lists in the hashtable, the slower the lookup. If the number
 is high, or lookup noticeably too slow, perfrom a Rehash().

 Remove all objects from the list. Does not delete the objects unless
 the THashList is the owner (set via SetOwner()).

 Remove all objects from the list AND delete all heap based objects.

 Find object using its name. Uses the hash value returned by the
 TString::Hash() after converting name to a TString.

 Find object using its hash value (returned by its Hash() member).

 Remove object from this collection and recursively remove the object
 from all other objects (and collections).
 This function overrides TCollection::RecursiveRemove that calls
 the Remove function. THashList::Remove cannot be called because
 it uses the hash value of the hash table. This hash value
 is not available anymore when RecursiveRemove is called from
 the TObject destructor.

 Rehash the hashlist. If the collision rate becomes too high (i.e.
 the average size of the linked lists become too long) then lookup
 efficiency decreases since relatively long lists have to be searched
 every time. To improve performance rehash the hashtable. This resizes
 the table to newCapacity slots and refills the table. Use
 AverageCollisions() to check if you need to rehash.

 Remove object from the list.

 Remove object via its objlink from the list.