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File:Tree.png
(269 × 282 (4 KB)) - 16:10, 17 April 2006
File:Tree-12-34.png
Image for the ((1 2) (3 4)) tree

(111 × 104 (2 KB)) - 11:28, 11 July 2007
File:Tree-like folding.gif
Tree-like folding in composites production.

(733 × 433 (5 KB)) - 14:00, 14 February 2013
Abstract syntax tree
[http://en.wikipedia.org/wiki/Abstract_syntax_tree Abstract syntax tree] at wikipedia.

107 bytes (15 words) - 15:17, 6 February 2021
Google Code Jam/Cheating a Boolean Tree
...st row are as far to the left as possible. Additionally, every node in the tree will either have 0 or 2 children. ...be given as input so that the value of all nodes can be calculated up the tree.

5 KB (837 words) - 12:13, 4 August 2008

Page text matches

99 questions/Solutions/72
(*) Construct the bottom-up order sequence of the tree nodes. ...which constructs the bottom-up sequence of the nodes of the multiway tree Tree.

570 bytes (97 words) - 03:52, 10 January 2017
99 questions/Solutions/54A
(*) Check whether a given term represents a binary tree data Tree a = Empty | Branch a (Tree a) (Tree a)

1 KB (156 words) - 13:35, 25 December 2016
99 questions/Solutions/71
(*) Determine the internal path length of a tree. ...ree as the total sum of the path lengths from the root to all nodes of the tree. By this definition, <tt>tree5</tt> has an internal path length of 9.

410 bytes (71 words) - 03:52, 10 January 2017
Talk:Library for binary
data Tree t = Leaf t | Branch (Tree t) (Tree t) get_node :: Bits -> Tree t -> Tree t

1 KB (178 words) - 15:53, 7 March 2007
Zipper monad/TravelTree
data Tree a = Leaf a | Branch (Tree a) (Tree a) deriving (Show, Eq) | L (Cxt a) (Tree a)

6 KB (912 words) - 03:52, 8 October 2006
99 questions/Solutions/70C
(*) Count the nodes of a multiway tree. nnodes :: Tree a -> Int

174 bytes (25 words) - 03:53, 10 January 2017
Himerge/Instalation
...n the Portage Tree,one of this in Stable tree and the second in the Tesing tree, that will generally be the latest ebuild launched, having the latest stabi Actually the latest Himerge version in Portage is 0.17 in ~arch tree.

2 KB (375 words) - 04:11, 24 February 2008
User talk:Kr.angelov
-- Generic zipper implementation for Data.Tree module Data.Tree.Zipper

9 KB (1,028 words) - 06:36, 24 May 2008
Huffman Encoding
data Tree a = Node a (Tree a) (Tree a) | Leaf a instance Eq a => Eq (Tree a) where

3 KB (399 words) - 21:04, 7 November 2011
Google Code Jam/Cheating a Boolean Tree
...st row are as far to the left as possible. Additionally, every node in the tree will either have 0 or 2 children. ...be given as input so that the value of all nodes can be calculated up the tree.

5 KB (837 words) - 12:13, 4 August 2008
Concrete data type
..."parse tree for Haskell" is likely to be a concrete data type, whereas a "tree" data type is a corresponding [[Abstract data type]]. ...nteger</hask>, <hask>Bool</hask>, <hask>[(String,String)]</hask> and <hask>Tree String</hask> are concrete data types.

864 bytes (135 words) - 22:06, 20 December 2006
Concrete view
...e difficult than insertion. His solution is to use a concrete view of the tree which simplifies the operation, and as a result, comes up with a new repres Here is a simple binary search tree type:

5 KB (845 words) - 02:22, 4 January 2008
99 questions/Solutions/68
...order/2 that construct the preorder and inorder sequence of a given binary tree, respectively. The results should be atoms, e.g. 'abdecfg' for the preorder ...verse direction; i.e. given a preorder sequence, construct a corresponding tree? If not, make the necessary arrangements.

2 KB (280 words) - 03:43, 10 January 2017
HaskellImplementorsWorkshop/2011/Tibell
...ing some kind of binary tree, typically a size balanced tree or a Patricia tree. While binary trees provide good asymptotic performance, their real world p

876 bytes (134 words) - 13:45, 17 December 2012
Chaitin's construction/Combinatory logic
import Tree (Tree (Leaf, Branch)) type CL = Tree BaseSymbol

689 bytes (98 words) - 14:34, 4 August 2006
99 questions/Solutions/73
(**) Lisp-like tree representation. The following pictures show how multiway tree structures are represented in Lisp.

2 KB (276 words) - 03:52, 10 January 2017
Shootout/Binary trees
data Tree = Nil | Node !Int Tree Tree -- stretch memory tree

7 KB (1,253 words) - 22:33, 22 February 2011
Talk:Gtk2Hs/Tutorials/TreeView
-- get currently selected node in the tree tree <- Model.treeViewGetSelection treeview

3 KB (485 words) - 10:07, 7 June 2011
Toy compression implementations
(count, markov1, Tree, encode_huffman, decode_huffman) -- Build a Huffman tree...

5 KB (730 words) - 01:59, 9 March 2007
99 questions/Solutions/62B
A node of a binary tree is at level N if the path from the root to the node has length N-1. The roo atLevel :: Tree a -> Int -> [a]

741 bytes (125 words) - 13:40, 25 December 2016
99 questions/Solutions/62
Collect the internal nodes of a binary tree in a list An internal node of a binary tree has either one or two non-empty successors. Write a predicate internals/2 t

717 bytes (98 words) - 13:39, 25 December 2016
99 questions/Solutions/69
...y subtree (nil) is encountered during the tree traversal. For example, the tree shown in problem P67 is represented as 'abd..e..c.fg...'. First, try to est data Tree a = Empty | Branch a (Tree a) (Tree a) deriving (Show, Eq)

3 KB (285 words) - 03:44, 10 January 2017
File:Tree-like folding.gif
Tree-like folding in composites production.

(733 × 433 (5 KB)) - 14:00, 14 February 2013
File:WxGeneric MyTree.png
WxGeneric example showing a tree structure

(810 × 604 (31 KB)) - 12:46, 8 May 2009
99 questions/Solutions/56
...is symmetric. Hint: Write a predicate mirror/2 first to check whether one tree is the mirror image of another. We are only interested in the structure, no ...nsider the cases where two immediate branches may not be the same, but the tree as a whole could be symmetric. Hence a mirror function is more encompassing

1 KB (179 words) - 13:36, 25 December 2016
Algebraic data type
==Tree examples== Suppose we want to represent the following tree:

3 KB (436 words) - 08:47, 22 May 2023
Abstract syntax tree
[http://en.wikipedia.org/wiki/Abstract_syntax_tree Abstract syntax tree] at wikipedia.

107 bytes (15 words) - 15:17, 6 February 2021
File:Tree-12-34.png
Image for the ((1 2) (3 4)) tree

(111 × 104 (2 KB)) - 11:28, 11 July 2007
Enter the Lambda
-- returns a tree to a function that returns the sum of the numbered -- tree (see the Examples section for numberTree and sumTree) you may

2 KB (379 words) - 03:00, 1 May 2009
99 questions/Solutions/57
...chapter 4 of the course, to write a predicate to construct a binary search tree from a list of integer numbers. add :: Ord a => a -> Tree a -> Tree a

741 bytes (117 words) - 22:03, 23 April 2021
File:Logtree.png
An example log tree visualization graph. This one depicts a FFT.

(1,643 × 419 (151 KB)) - 23:33, 30 December 2013
Gtk2Hs/Tutorials/TreeView
tree <- Model.treeViewGetSelection treeview Model.treeSelectionSetMode tree SelectionSingle

2 KB (280 words) - 00:46, 9 April 2021
Zipper monad/TravelBTree
...y a subtree, said subtrees position within the entire tree, and the entire tree itself. See [[Zipper]] for an explanation of such concepts. insertLeft, -- insert a tree to the left of the current node

3 KB (559 words) - 03:51, 8 October 2006
99 questions/Solutions/64
...the usual Prolog term t(X,L,R) (or nil). As a preparation for drawing the tree, a layout algorithm is required to determine the position of each node in a * y(v) is equal to the depth of the node v in the tree

2 KB (337 words) - 03:41, 10 January 2017
Gentoo/HaskellPlatform
...e overlay includes additional haskell packages that are not in the portage tree. ...that packages can not be marked stable until they have been in the portage tree for > 30 days. Some of the ebuilds are not stable yet, so they need to be

2 KB (305 words) - 13:16, 3 June 2012
File:Circum-op12cl-34.png
Tree ((1 2) (3 4)) with left subtree marked.

(153 × 125 (3 KB)) - 08:55, 19 July 2007
Yhc/API/Compiler
-- bracketLex - first step, as the compiler does it - a bracketLex tree, possibly with comments/spaces You want to parse the code to the parse tree, modify it in some way, then write it out again. How?

3 KB (585 words) - 02:39, 15 January 2006
File:Path-1X-34.png
A path-like, more deconstructed representation of the context of a tree zipper.

(119 × 111 (2 KB)) - 12:56, 15 July 2007
99 questions/Solutions/61A
Collect the leaves of a binary tree in a list leaves :: Tree a -> [a]

615 bytes (90 words) - 13:39, 25 December 2016
Principal variation search
import Data.Tree pvs :: (Num a1, Ord a1) => a1 -> a1 -> [Tree (a, a1)] -> ([a], a1)

6 KB (723 words) - 03:47, 8 October 2006
File:Back-End.pdf
...ator pentru a putea rula programele reprezentate prin AST (abstract syntax tree).

(297 KB) - 00:16, 22 December 2006
99 questions/Solutions/60
Consider a height-balanced binary tree of height H. What is the maximum number of nodes it can contain? ...hask> that returns the minimum number of nodes in a height-balanced binary tree of height H.

3 KB (407 words) - 13:38, 25 December 2016
99 questions/70B to 73
...y empty) set of successors which are multiway trees themselves. A multiway tree is never empty. The set of successor trees is sometimes called a forest. ...ottom:1px solid #eee">(*) Check whether a given term represents a multiway tree. (no solution needed)

5 KB (876 words) - 05:50, 11 June 2023
Git
There are 4 kinds of objects: tag, blob, tree and commit. - a tree contains name associated by reference with blobs or trees. This represents

3 KB (516 words) - 06:26, 3 April 2013
User:PaoloMartini
== Catamorfism on a binary tree == data Tree a = Leaf a

7 KB (1,245 words) - 20:07, 4 February 2007
Benchmarks Game/Parallel/BinaryTreesDPH
stretch tree of depth 21 check: -1 long lived tree of depth 20 check: -1

8 KB (1,082 words) - 22:27, 22 January 2012
File:The Expression problem Solved untill 2008.png
...ou may see the various modules defining parts of the datatype which is the tree of the expresions.

(642 × 325 (98 KB)) - 08:02, 3 June 2009
Factory function
...ructure with invariants that you need to preserve, such as a binary search tree which needs to stay balanced. ...e declaration for a [http://en.wikipedia.org/wiki/Red-black_tree Red-Black tree] is:

2 KB (456 words) - 20:29, 5 December 2008
99 questions/Solutions/67A
...ich does this inverse; i.e. given the string representation, construct the tree in the usual form. Finally, combine the two predicates in a single predicat treeToString :: Tree Char -> String

2 KB (372 words) - 03:43, 10 January 2017
Chaitin's construction/Parser
==== Binary tree ==== module Tree (Tree (Leaf, Branch)) where

4 KB (583 words) - 14:31, 4 August 2006
99 questions/Solutions/66
...tight can you pack together two subtrees to construct the combined binary tree? layout :: Tree a -> Tree (a, Pos)

4 KB (637 words) - 03:42, 10 January 2017
99 questions/Solutions/55
In a completely balanced binary tree, the following property holds for every node: The number of nodes in its le ...via backtracking. Put the letter 'x' as information into all nodes of the tree.

4 KB (694 words) - 01:23, 7 June 2021
99 questions/Solutions/63
Construct a complete binary tree A complete binary tree with height H is defined as follows:

9 KB (727 words) - 03:41, 10 January 2017
File:Tipuri recursive.pdf
...pentru a implementa arborii sintaxei abstracte (eng: AST - abstract syntax tree).

(169 KB) - 00:03, 22 December 2006
Burton-style nondeterminism
For the structured values, Burton defines a tree type: data Tree a = Node { contents :: a,

2 KB (341 words) - 09:18, 22 February 2022
型
他の例として、二分木 (binary [[Tree]])を考えてみましょう。このように表されます。 data Tree a = Branch (Tree a) (Tree a) | Leaf a

8 KB (433 words) - 14:11, 7 December 2009
99 questions/Solutions/59
In a height-balanced binary tree, the following property holds for every node: The height of its left subtre hbaltree :: a -> Int -> [Tree a]

1 KB (215 words) - 13:38, 25 December 2016
99 questions/Solutions/65
layout :: Tree a -> Tree (a, Pos) depth :: Tree a -> Int

2 KB (299 words) - 03:42, 10 January 2017
Constructor
An example of a ''unary'' type constructor <haskell>Tree</haskell> data Tree a = Tip | Node a (Tree a) (Tree a)

6 KB (1,060 words) - 16:51, 18 June 2021
Hexpat/
import Text.XML.Expat.Tree -- Note: Because we're not using the tree, Haskell can't infer the type of

4 KB (552 words) - 09:01, 20 February 2010
Abstract data type
===Tree=== data Tree a = Nil

5 KB (872 words) - 13:14, 2 September 2014
Haskell Quiz/Secret Santas/Solution Kuklewicz
-- A complete binary tree, of leaves and internal nodes. -- Invariant: card >=2. All internal tree nodes are always full.

5 KB (840 words) - 10:56, 13 January 2007
User:WillNess
-- tree folding idea Heinrich Apfelmus / Dave Bayer <code>foldi</code> is on [[Fold#Tree-like_folds|Tree-like folds]] page. <code>union</code> and more at [[Prime numbers#Sieve_of_

2 KB (296 words) - 13:50, 21 February 2023
Denotative
data Tree a = Node a [Tree a] dfs :: Graph -> [Vertex] -> [Tree Vertex]

4 KB (488 words) - 04:24, 5 April 2024
HIDE/Design/Project management
...ct for the project management. Each project has a single root of its build tree. At the moment we expect there to be at most one .cabal file in that root d === Setting the build tree root ===

9 KB (1,516 words) - 12:14, 24 January 2006
Show and Read instance
.../pipermail/glasgow-haskell-users/2003-August/005586.html Show instance for Tree]

744 bytes (109 words) - 14:32, 13 November 2006
99 questions/54A to 60
A binary tree is either empty or it is composed of a root element and two successors, whi data Tree a = Empty | Branch a (Tree a) (Tree a)

9 KB (1,368 words) - 02:54, 11 June 2023
Himerge/En
...]] || ''sync'' || Update our portage tree or overlay with latest available tree on the mirrors.

2 KB (296 words) - 07:54, 18 February 2008
GeBoP
...s a brain viewer which enables you to explore the computer's internal game tree. To see the game tree, select Brain -> Open.

1 KB (231 words) - 13:25, 16 March 2018
99 questions/Solutions/70
(**) Tree construction from a node string. ...of its nodes, a special character ^ has been inserted whenever, during the tree traversal, the move is a backtrack to the previous level.

7 KB (1,025 words) - 02:14, 23 July 2021
Talk:Concurrency with oracles
...can function for the origial idea of an oracle and as the infinite binary tree of oracles that seems to come in handy. ...021: So instead of e.g. streams of them, combine the oracle concept with a tree type, to have the features of both:

998 bytes (154 words) - 22:38, 18 March 2021
Benchmarks Game/Parallel/BinaryTrees
-- an artificially strict tree. data Tree = Nil | Node !Int !Tree !Tree

6 KB (1,055 words) - 23:27, 18 April 2020
Yhc/Options
--parse show syntax tree after parser (default=off) --rename show syntax tree after rename (default=off)

6 KB (733 words) - 15:19, 6 February 2021
HaskLS
* <bourbaki> boegel the idea is that ... ie think of the first think of the tree the root ...branches of changeing textures like makeing the bark darker where the tree is older or so

3 KB (482 words) - 05:24, 30 November 2006
Haskell Quiz/TicTacToe
...e player which learns to play the game by observing the game (i.e. no game tree traversal to find the optimal move).

331 bytes (51 words) - 14:20, 23 August 2012

...E., (1998) ] was used. In order to keep the source and the implicit syntax tree modular we have replace the data constructors by regular functions over the

(328 KB) - 08:40, 10 January 2009

Action
data Tree a = Node a [Tree a] dfs :: Graph -> [Vertex] -> [Tree Vertex]

3 KB (428 words) - 04:08, 12 April 2024
99 questions/Solutions/61
Count the leaves of a binary tree

331 bytes (43 words) - 13:38, 25 December 2016
Blog articles/FFI
* [http://therning.org/magnus/archives/238 C and Haskell sitting in a tree]

737 bytes (93 words) - 01:56, 10 December 2020
Circular programming
Let us see the tree minimum problem (described above), and let us modularize the magic circular repmin :: Ord a => Tree a -> Tree a

12 KB (1,607 words) - 10:48, 12 February 2010
99 questions/Solutions/83
Write a predicate s_tree(Graph,Tree) to construct (by backtracking) all spanning trees of a given graph. ...le subgraphs, then filters out those that meet the criteria for a spanning tree:

2 KB (281 words) - 03:49, 10 January 2017
Humor/Hugme
...stating that Functional Programming was devised by a, "... load of binary tree Huggers!".

700 bytes (109 words) - 04:19, 25 January 2006
Talk:Monads as containers
...those starting out with monads, it's probably helpful to actually have the Tree monad code, in case they want to "check their answer." Here it is: instance Monad Tree where

7 KB (1,266 words) - 05:13, 15 October 2016
99 questions/61 to 69
An example tree: <div style="border-bottom:1px solid #eee">Count the leaves of a binary tree. [[99 questions/Solutions/61|Solutions]]</

12 KB (1,696 words) - 05:35, 11 June 2023
Hoed
After running the program a computation tree is constructed and displayed in a web browser. ...f your program misbehaves, you can judge the computation statements in the tree as 'right' or 'wrong' according to your intention. When enough statements a

6 KB (896 words) - 09:12, 22 December 2015
99 questions/Solutions/92
Anyway the puzzle goes like this: Given a tree with N nodes (and hence N-1 edges). Find a way to enumerate the nodes from ...s a numbering scheme for a given tree. What is the solution for the larger tree pictured below?

3 KB (420 words) - 22:52, 7 June 2017
Generics
data Tree a = Leaf | Bin a (Tree a) (Tree a) ...length of a tree (or its size, if you want), by recursively traversing the tree and counting the number of elements. Generic programming allows to define a

4 KB (598 words) - 02:44, 13 February 2021
Talk:Key-value apply
...because the case actually transforms the <hask>[([k],[v])]</hask> into a ''tree'' to facilitate faster searching.

932 bytes (152 words) - 18:39, 16 February 2007
Zipper
rather than the data itself. For example, consider a simple binary tree type: data Tree a = Fork (Tree a) (Tree a) | Leaf a

10 KB (1,623 words) - 21:10, 26 June 2023
Phone number
-- The dictionary is stored in a denary tree. A node has sub-trees, a leaf -- Given an existing tree, create a new tree to be its parent. Put the

12 KB (1,746 words) - 05:55, 21 February 2010
The Monad.Reader/Issue4/On Treaps And Randomization
We give an example implementation of treaps (tree heaps) in Haskell. The emphasis is partly on treaps, partly on the System.R One such representation is the binary search tree (In much literature,

17 KB (2,987 words) - 01:08, 10 May 2008
Difference list
Consider showing a binary tree. If the tree is large, you end up with a pretty large left association for the left subt

3 KB (421 words) - 16:40, 1 August 2018
Extending Phooey
treeDisplay :: Sourceable a => Source (Tree a) -> UI (TreeSources a) aTree <- title "Family Tree" $ treeDisplay (liftA asTree db)

3 KB (480 words) - 12:31, 18 August 2007
New monads/MonadRandomSplittable
The following constructs a tree of infinite depth and width: import Data.Tree

4 KB (476 words) - 22:10, 27 November 2007
Diagrams/Dev/BuildStatus
...ravis-ci.org/diagrams/dual-tree https://secure.travis-ci.org/diagrams/dual-tree.png]

4 KB (510 words) - 01:42, 10 November 2013
Zipper monad
...es a tree and returns the <hask>Loc</hask> corresponding to the top of the tree. Thus a typical call to <hask>traverse</hask> might look like: getStruct = modifyStruct id -- works because modifyTree returns the 'new' tree

5 KB (846 words) - 01:00, 9 October 2006
Output/Input
...tree [...] since any number of subtrees may be extracted from an infinite tree). In practice, these values will be determined at run time (when used as ar main' :: Tree Exterior -> ...

8 KB (1,236 words) - 12:36, 1 January 2024
Talk:HIDE
...ecific implementation of it. To be precise, hIDE should store Haskell in a tree structure (preferably XML) but provide enough functionality to let the prog ...does not advocate a top-down editor. Haskell source code do not have deep tree structure so this is desirable.

3 KB (490 words) - 23:08, 18 January 2007
99 questions/Solutions/58
An efficient solution, which takes the fact that a tree with an even number of nodes can't be symmetric into consideration:

666 bytes (91 words) - 13:37, 25 December 2016
HIDE/Design
* Allows plugins to be built seperately or "out of tree" * TeX typesetting (Easier if you have syntax tree available)

4 KB (632 words) - 19:45, 22 February 2008

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