crocks is a collection of popular
Algebraic Data Types (ADTs) that are all
the rage in functional programming. You have heard of things
like
Maybe and
Either and heck maybe even
IO, that is what these are. The
main goal of
crocks is to curate and provide not only a common interface
between each type (where possible of course), but also provide all of the helper
functions needed to hit the ground running.
Table of Contents
-
Entire crocks library (CommonJS)
-
Entire crocks library (JS Modules)
-
Single entities (CommonJS)
-
Single entities (JS Modules)
-
Course/Videos- [Video evilsoft](#video-evilsoft)
- [Video avanslaars](#video-avanslaars)
-
Tutorials- [Tutorial rpearce](#tutorial-rpearce)
-
Examples- [Example dbagia](#example-dbagia)
Installation
crocks is available from
npm and is just a shell command away. All you need
to do is run the following to save it as a dependency in your current project
folder:
$ npm install crocks -S
Usage
There are many options to use
crocks to suit the needs of your, projects. When
used on the backend or in an environment where size is not a big concern, the
entire lib can be brought in and the various elements can be either be plucked
off of or referenced by the namespace.
For those cases where size matters, like in the case of frontend bundle
building, the individual entities can be brought in. This will ensure that
your finished bundles include only what is needed for your application/program.
For using the latter case, refer to the desired function's documentation to
find the path in which it resides.
Entire crocks library (CommonJS)
// namespace entire suite to crocks variable
const crocks = require('crocks')
// pluck anything that does not require name-spacing
const { safe, isNumber } = crocks
// still requires entire object, but removes name-spacing
const { and, liftA2 } = require('crocks')
// divide :: Number -> Number
const divide =
x => y => x / y
// safeNumber :: a -> Maybe Number
const safeNumber =
safe(isNumber)
// notZero :: a -> Maybe Number
const notZero = safe(
and(isNumber, x => x !== 0)
)
// safeDivide:: a -> Maybe Number
const safeDivide = crocks.curry(
(x, y) => liftA2(divide, safeNumber(x), notZero(y))
)
safeDivide(20, 0)
//=> Nothing
safeDivide(20, 5)
//=> Just 4
safeDivide('number', 5)
//=> Nothing
Entire crocks library (JS Modules)
// namespace entire suite to crocks variable
import crocks from 'crocks'
// still imports entire object, but removes name-spacing
import { and, liftA2 } from 'crocks'
// pluck anything that does not require name-spacing
const { safe, isNumber } = crocks
// divide :: Number -> Number
const divide =
x => y => x / y
// safeNumber :: a -> Maybe Number
const safeNumber =
safe(isNumber)
// notZero :: a -> Maybe Number
const notZero = safe(
and(isNumber, x => x !== 0)
)
// safeDivide:: a -> Maybe Number
const safeDivide = crocks.curry(
(x, y) => liftA2(divide, safeNumber(x), notZero(y))
)
safeDivide(20, 0)
//=> Nothing
safeDivide(20, 5)
//=> Just 4
safeDivide('number', 5)
//=> Nothing
Single entities (CommonJS)
// require in each entity directly
const and = require('crocks/logic/and')
const curry = require('crocks/helpers/curry')
const isNumber = require('crocks/predicates/isNumber')
const liftA2 = require('crocks/helpers/liftA2')
const safe = require('crocks/Maybe/safe')
// divide :: Number -> Number
const divide =
x => y => x / y
// safeNumber :: a -> Maybe Number
const safeNumber =
safe(isNumber)
// notZero :: a -> Maybe Number
const notZero = safe(
and(isNumber, x => x !== 0)
)
// safeDivide:: a -> Maybe Number
const safeDivide = curry(
(x, y) => liftA2(divide, safeNumber(x), notZero(y))
)
safeDivide(20, 0)
//=> Nothing
safeDivide(20, 5)
//=> Just 4
safeDivide('number', 5)
//=> Nothing
Single entities (JS Modules)
// import in each entity directly
import and from 'crocks/logic/and'
import curry from 'crocks/helpers/curry'
import isNumber from 'crocks/predicates/isNumber'
import liftA2 from 'crocks/helpers/liftA2'
import safe from 'crocks/Maybe/safe'
// divide :: Number -> Number
const divide =
x => y => x / y
// safeNumber :: a -> Maybe Number
const safeNumber =
safe(isNumber)
// notZero :: a -> Maybe Number
const notZero = safe(
and(isNumber, x => x !== 0)
)
// safeDivide:: a -> Maybe Number
const safeDivide = curry(
(x, y) => liftA2(divide, safeNumber(x), notZero(y))
)
safeDivide(20, 0)
//=> Nothing
safeDivide(20, 5)
//=> Just 4
safeDivide('number', 5)
//=> Nothing
Documentation
What is Included?
There are (8) classifications of "things" included in this library:
They are all
Functor based Data Types that provide different computational
contexts for working in a more declarative, functional flow. For the most part,
a majority of the other bits in
crocks exist to serve these ADTs.
really
Functors in their own right (although some can be), they are still very
useful in our everyday programming needs. Ever need to sum a list of numbers or
mix a mess of objects together? This is were you will find the ADTs you need to
do that.
working with other functions. These do things like compose (2) functions
together, or flip arguments on a function. They typically either take a
function, return a function or a bit a both. These are considered the glue that
holds the mighty house of
crocks together and a valuable aid in writing
reusable code.
either convenient versions of combinators or not even combinators at all cover
this group.
functions. All of these functions work with either predicate functions or
instances of
Pred and let you combine them in some very interesting ways.
functions to get you started.
that you never have to reference the actual data being worked on? Well here is
where you will find all of these functions to do that. For every algebra
available on both the
Crocks and
Monoids there is a function here.
here are used to transform from one type to another, naturally. These come are
handy in situations where you have functions that return one type (like
an
Either), but are working in a context of another (say
Maybe). You would
like to compose these, but in doing so will result in a nesting that you will
need to account for for the rest of your flow.
Contributors
Thanks goes to these wonderful people (
emoji keyemojis):
<td align="center"><a href="https://github.com/evilsoft"><img src="https://avatars1.githubusercontent.com/u/3665793?v=4" width="100px;" alt="Ian Hofmann-Hicks"/><br /><sub><b>Ian Hofmann-Hicks</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=evilsoft" title="Code">π»</a> <a href="https://github.com/evilsoft/crocks/commits?author=evilsoft" title="Documentation">π</a> <a href="#video-evilsoft" title="Videos">πΉ</a></td>
<td align="center"><a href="https://github.com/rstegg"><img src="https://avatars0.githubusercontent.com/u/19234385?v=4" width="100px;" alt="Ryan"/><br /><sub><b>Ryan</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=rstegg" title="Code">π»</a> <a href="https://github.com/evilsoft/crocks/issues?q=author%3Arstegg" title="Bug reports">π</a> <a href="#review-rstegg" title="Reviewed Pull Requests">π</a></td>
<td align="center"><a href="http://vanslaars.io"><img src="https://avatars0.githubusercontent.com/u/1271181?v=4" width="100px;" alt="Andrew Van Slaars"/><br /><sub><b>Andrew Van Slaars</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=avanslaars" title="Documentation">π</a> <a href="#video-avanslaars" title="Videos">πΉ</a></td>
<td align="center"><a href="https://github.com/HenriqueLimas"><img src="https://avatars0.githubusercontent.com/u/2222191?v=4" width="100px;" alt="Henrique Limas"/><br /><sub><b>Henrique Limas</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=HenriqueLimas" title="Code">π»</a> <a href="https://github.com/evilsoft/crocks/commits?author=HenriqueLimas" title="Documentation">π</a> <a href="#review-HenriqueLimas" title="Reviewed Pull Requests">π</a></td>
<td align="center"><a href="https://robertwpearce.com"><img src="https://avatars2.githubusercontent.com/u/592876?v=4" width="100px;" alt="Robert Pearce"/><br /><sub><b>Robert Pearce</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/issues?q=author%3Arpearce" title="Bug reports">π</a> <a href="https://github.com/evilsoft/crocks/commits?author=rpearce" title="Code">π»</a> <a href="#review-rpearce" title="Reviewed Pull Requests">π</a> <a href="#tutorial-rpearce" title="Tutorials">β
</a> <a href="https://github.com/evilsoft/crocks/commits?author=rpearce" title="Documentation">π</a></td>
<td align="center"><a href="https://github.com/flintinatux"><img src="https://avatars1.githubusercontent.com/u/888052?v=4" width="100px;" alt="Scott McCormack"/><br /><sub><b>Scott McCormack</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/issues?q=author%3Aflintinatux" title="Bug reports">π</a></td>
<td align="center"><a href="http://www.fdaoud.com"><img src="https://avatars3.githubusercontent.com/u/1706600?v=4" width="100px;" alt="Fred Daoud"/><br /><sub><b>Fred Daoud</b></sub></a><br /><a href="#review-foxdonut" title="Reviewed Pull Requests">π</a></td>
|
<td align="center"><a href="https://github.com/karthikiyengar"><img src="https://avatars0.githubusercontent.com/u/8260207?v=4" width="100px;" alt="Karthik Iyengar"/><br /><sub><b>Karthik Iyengar</b></sub></a><br /><a href="#review-karthikiyengar" title="Reviewed Pull Requests">π</a> <a href="https://github.com/evilsoft/crocks/commits?author=karthikiyengar" title="Code">π»</a> <a href="https://github.com/evilsoft/crocks/commits?author=karthikiyengar" title="Documentation">π</a></td>
<td align="center"><a href="https://github.com/jonwhelan"><img src="https://avatars1.githubusercontent.com/u/7376957?v=4" width="100px;" alt="Jon Whelan"/><br /><sub><b>Jon Whelan</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/issues?q=author%3Ajonwhelan" title="Bug reports">π</a> <a href="https://github.com/evilsoft/crocks/commits?author=jonwhelan" title="Code">π»</a></td>
<td align="center"><a href="http://bennypowers.com"><img src="https://avatars0.githubusercontent.com/u/1466420?v=4" width="100px;" alt="Benny Powers"/><br /><sub><b>Benny Powers</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=bennypowers" title="Documentation">π</a> <a href="https://github.com/evilsoft/crocks/commits?author=bennypowers" title="Code">π»</a> <a href="#review-bennypowers" title="Reviewed Pull Requests">π</a></td>
<td align="center"><a href="https://github.com/dalefrancis88"><img src="https://avatars0.githubusercontent.com/u/1909325?v=4" width="100px;" alt="Dale Francis"/><br /><sub><b>Dale Francis</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=dalefrancis88" title="Code">π»</a> <a href="#review-dalefrancis88" title="Reviewed Pull Requests">π</a></td>
<td align="center"><a href="https://github.com/premithk"><img src="https://avatars1.githubusercontent.com/u/7926867?v=4" width="100px;" alt="Premith"/><br /><sub><b>Premith</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=premithk" title="Documentation">π</a></td>
<td align="center"><a href="https://github.com/dbagia"><img src="https://avatars0.githubusercontent.com/u/6302673?v=4" width="100px;" alt="Dipen Bagia"/><br /><sub><b>Dipen Bagia</b></sub></a><br /><a href="#example-dbagia" title="Examples">π‘</a></td>
<td align="center"><a href="https://github.com/ximenean"><img src="https://avatars3.githubusercontent.com/u/5243925?v=4" width="100px;" alt="Andrew Jones"/><br /><sub><b>Andrew Jones</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=ximenean" title="Documentation">π</a></td>
|
<td align="center"><a href="https://github.com/wayneseymour"><img src="https://avatars0.githubusercontent.com/u/4858051?v=4" width="100px;" alt="W. K. Seymour III"/><br /><sub><b>W. K. Seymour III</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=wayneseymour" title="Documentation">π</a></td>
<td align="center"><a href="https://youtube.com/euprogramadoroficial"><img src="https://avatars2.githubusercontent.com/u/11702749?v=4" width="100px;" alt="Eliseu Benedito Codinhoto"/><br /><sub><b>Eliseu Benedito Codinhoto</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=zeucxb" title="Documentation">π</a></td>
<td align="center"><a href="https://github.com/NiallArkEnergy"><img src="https://avatars3.githubusercontent.com/u/12712867?v=4" width="100px;" alt="NiallArkEnergy"/><br /><sub><b>NiallArkEnergy</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=NiallArkEnergy" title="Code">π»</a> <a href="https://github.com/evilsoft/crocks/commits?author=NiallArkEnergy" title="Documentation">π</a></td>
<td align="center"><a href="https://github.com/vidyu"><img src="https://avatars0.githubusercontent.com/u/3265934?v=4" width="100px;" alt="vidyu"/><br /><sub><b>vidyu</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=vidyu" title="Documentation">π</a></td>
<td align="center"><a href="http://michael-wolfenden.github.io"><img src="https://avatars2.githubusercontent.com/u/780521?v=4" width="100px;" alt="Michael Wolfenden"/><br /><sub><b>Michael Wolfenden</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=michael-wolfenden" title="Documentation">π</a></td>
<td align="center"><a href="https://github.com/JohanCodinha"><img src="https://avatars0.githubusercontent.com/u/14071356?v=4" width="100px;" alt="Johan Codinha"/><br /><sub><b>Johan Codinha</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/issues?q=author%3AJohanCodinha" title="Bug reports">π</a></td>
<td align="center"><a href="http://www.mattross.io"><img src="https://avatars0.githubusercontent.com/u/450220?v=4" width="100px;" alt="Matt Ross"/><br /><sub><b>Matt Ross</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=amsross" title="Code">π»</a></td>
|
<td align="center"><a href="http://jazzy.codes"><img src="https://avatars2.githubusercontent.com/u/4014487?v=4" width="100px;" alt="Jasmina Jacquelina"/><br /><sub><b>Jasmina Jacquelina</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=jasminabasurita" title="Documentation">π</a> <a href="https://github.com/evilsoft/crocks/commits?author=jasminabasurita" title="Code">π»</a></td>
<td align="center"><a href="https://github.com/faliah"><img src="https://avatars0.githubusercontent.com/u/5593080?v=4" width="100px;" alt="Denis Zolkin"/><br /><sub><b>Denis Zolkin</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=faliah" title="Documentation">π</a></td>
<td align="center"><a href="http://www.cnblogs.com/Answer1215/"><img src="https://avatars0.githubusercontent.com/u/11929006?v=4" width="100px;" alt="Zhentian Wan"/><br /><sub><b>Zhentian Wan</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=zhentian-wan" title="Documentation">π</a></td>
<td align="center"><a href="https://github.com/RichardForrester"><img src="https://avatars0.githubusercontent.com/u/12902182?v=4" width="100px;" alt="RichardForrester"/><br /><sub><b>RichardForrester</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=RichardForrester" title="Code">π»</a> <a href="https://github.com/evilsoft/crocks/commits?author=RichardForrester" title="Documentation">π</a> <a href="https://github.com/evilsoft/crocks/commits?author=RichardForrester" title="Tests">β οΈ</a></td>
<td align="center"><a href="http://furkantunali.com"><img src="https://avatars2.githubusercontent.com/u/68406?v=4" width="100px;" alt="Furkan TunalΔ±"/><br /><sub><b>Furkan TunalΔ±</b></sub></a><br /><a href="https://github.com/evilsoft/crocks/commits?author=JacopKane" title="Documentation">π</a> <a href="#example-JacopKane" title="Examples">π‘</a></td>
|
Course/Videos
Video evilsoft
Video avanslaars
Tutorials
Tutorial rpearce
Examples
Example dbagia
