Difference between revisions of "Data Structures, Containers, Collections"
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| [http://svn.freepascal.org/svn/fpcprojects/contrib/decal/ DeCAL] || MPL || no | | [http://svn.freepascal.org/svn/fpcprojects/contrib/decal/ DeCAL] || MPL || no | ||
|| ... || [http://svn.freepascal.org/cgi-bin/viewvc.cgi/contrib/decal/?root=fpcprojects browse] variants + interfaces, relatively slow. | || ... || [http://svn.freepascal.org/cgi-bin/viewvc.cgi/contrib/decal/?root=fpcprojects browse] variants + interfaces, relatively slow. | ||
+ | |- | ||
+ | | [https://bitbucket.org/hovadur/decal hovadur DeCAL] || MPL || no | ||
+ | || al, as, ll, rb, hm, hs, tm, ts, bs || DeCAL works in Lazarus (windows 64 bit/32 bit, linux 64 bit/32 bit) and Delphi7, Delphi XE2. | ||
|- | |- | ||
| [[StringHashMap]] || MPL1.0 || ?? | | [[StringHashMap]] || MPL1.0 || ?? |
Revision as of 08:38, 27 July 2014
Introduction
Most programs operate on data, either searching, sorting, iterating or simply insert and retrieve. Therefore, a means of data structure, containers and collections is required.
Free Pascal ships with numerous data structures, at different levels (RTL, FCL) but there are also third party solutions offering such feature.
RTL
- Classes unit
- TList: Manages a list of pointers, can search and sort the list, has event notification feature
- TFPList: Manages a list of pointers, can search and sort the list, without event notification feature, faster than TList
- TStrings: Manages a list of strings, can search, split, save to / load from file, store objects, act like associative array, etc., is an abstract class
- TStringList: TStrings descendant, implements abstract methods of TStrings, can sort, handle duplicates, has event notification feature, a concrete class
- TBits: Manages a list of bits (0 or 1), useful for bit-map (not bitmap image format)
- TCollection and TCollectionItem: Forms basic management of named items
- FGL (Free Generics Library) unit
- TFPGList
- TFPGObjectList
- TFPGInterfacedObjectList
- TFPGMap
- TFPGMapInterfacedObjectData
FCL
FCL-Base
- AVL_Tree unit
- TAVLTree and TAVLTreeNode; see AVL Tree
- Contnrs unit
- TFPObjectList
- TObjectList
- TComponentList
- TClassList
- TOrderedList
- TStack
- TObjectStack
- TQueue
- TObjectQueue
- TFPHashList
- TFPHashObjectList
- TFPDataHashTable
- TFPStringHashTable
- TFPObjectHashTable
- TBucketList
- TObjectBucketList
FCL-STL
- GVector unit
- TVector: Implements dynamically self-resizing array, item order is based on insertion order
- GSet unit
- TSet: Implements red-black tree backed set, no order is guaranteed
- GHashSet unit
- THashSet: Implements hashtable backed set, no order is guaranteed
- GStack unit
- TStack: Implements stack, LIFO (last in first out) order
- GQueue unit
- TQueue: Implements stack, items are pushed from front, FIFO (first in first out) order
- GPriorityQueue unit
- TPriorityQueue: Implements heap backed priority queue, order is based on given compare function
- GDeQue unit
- TDeque: Implements double ended queue, items can be pushed and popped from either front or back
- GMap unit
- TMap: Implements TSet (and therefore, red-black tree) backed map
- GHashMap unit
- THashMap: Implements hashtable backed map
- GTree unit
- TTree: Implements k-ary tree, supports depth first and breadth first traversal
Lazarus/LCL
- AvgLvlTree: extended versions of the FPC/FCL TAVLTree and TAVLTreeNode; see AVL Tree
3rd party
project | license | generic | types | notes |
---|---|---|---|---|
Containers library for Lazarus | ?? | no | al,rb,hm,hs,ll,q,s,v | port of public domain Delphi Container Library |
heContnrs | BSD3 | yes | ... | ... |
Fundamentals | BSD | no | ... | in Utils/cDataStructs.pas |
RBS AntiDOT | GPLv2 | ?? | ... | ... |
LightContainers | FPC | no+yes | ... | Generic and non-generic variants. (Delphi does not optimize generics) Quite lowlevel |
DeCAL | MPL | no | ... | browse variants + interfaces, relatively slow. |
hovadur DeCAL | MPL | no | al, as, ll, rb, hm, hs, tm, ts, bs | DeCAL works in Lazarus (windows 64 bit/32 bit, linux 64 bit/32 bit) and Delphi7, Delphi XE2. |
StringHashMap | MPL1.0 | ?? | ... | port of code from JCL |
GContnrs | LGPLv2 | yes | v, hm, hs, ll, q, dq, s, ts, tm, bs | ... |
code | data type |
---|---|
al | array list |
as | array set |
rb | red-black tree |
hm | hashmap |
hs | hashset |
ll | linked list |
q | queue |
dq | dequeue |
s | stack |
v | vector |
tm | treemap |
ts | treeset |
bs | bitset |