@thi.ng/dcons v3.2.112
This project is part of the @thi.ng/umbrella monorepo.
About
Double-linked lists with comprehensive set of operations (incl. optional self-organizing behaviors).
- ES6 iterator support
- Stack & queue API (front and/or back)
- Random node access (read / write, O(n/2))
- Node insertion (also w/ custom comparator)
- Node finding (O(n))
- Node swaps (O(1))
- Reversing (O(n/2))
- Rotation (left / right) (O(1))
- Shuffling (configurable, support custom PRNG)
- Sorting (Merge sort, w/ custom comparator)
- Slicing (sublist copies)
- Splicing (delete and/or insert)
release()
(emptying, GC friendly)concat()
/into()
map()
/filter()
/reduce()
compare()
/equiv()
toJSON()
transform (-> array)
v2.3.0 adds the self-organizing
list type SOL
(an
extension of DCons
), which dynamically re-orders items based on certain
accesses and offers these two built-in strategies:
defMTF()
- moves currently accessed element to front of listdefTranspose()
- swaps currently accessed element with its predecessor
Only the following operations will trigger the self-organizing behavior:
nth()
setNth()
setTail()
find()
findWith()
Btw. Also see
@thi.ng/cache
for more LRU, MRU implementations based on managed DCons
impls...
Status
STABLE - used in production
Search or submit any issues for this package
Installation
yarn add @thi.ng/dcons
ES module import:
<script type="module" src="https://cdn.skypack.dev/@thi.ng/dcons"></script>
For Node.js REPL:
# with flag only for < v16
node --experimental-repl-await
> const dcons = await import("@thi.ng/dcons");
Package sizes (gzipped, pre-treeshake): ESM: 2.14 KB
Dependencies
- @thi.ng/api
- @thi.ng/checks
- @thi.ng/compare
- @thi.ng/equiv
- @thi.ng/errors
- @thi.ng/random
- @thi.ng/transducers
API
Head centric
cons()
first()
drop()
setHead()
Tail centric
into()
push()
peek()
pop()
setTail()
Random Access
.length
nth()
nthCell()
setNth()
Insertion
insertBefore()
insertAfter()
insertBeforeNth()
insertAfterNth()
insertSorted()
Finding
find()
findWith()
Structure
copy()
concat()
slice()
splice()
swap()
shuffle()
sort()
reverse()
rotateLeft()
rotateRight()
release()
TODO
Authors
Karsten Schmidt
If this project contributes to an academic publication, please cite it as:
@misc{thing-dcons,
title = "@thi.ng/dcons",
author = "Karsten Schmidt",
note = "https://thi.ng/dcons",
year = 2017
}
License
© 2017 - 2021 Karsten Schmidt // Apache Software License 2.0
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