monadex alternatives and similar packages
Based on the "Algorithms and Data structures" category.
Alternatively, view monadex alternatives based on common mentions on social networks and blogs.
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exconstructor
An Elixir library for generating struct constructors that handle external data with ease. -
aja
Extension of the Elixir standard library focused on data stuctures, data manipulation and performance -
remodel
:necktie: An Elixir presenter package used to transform map structures. "ActiveModel::Serializer for Elixir" -
MapDiff
Calculates the difference between two (nested) maps, and returns a map representing the patch of changes. -
the_fuzz
String metrics and phonetic algorithms for Elixir (e.g. Dice/Sorensen, Hamming, Jaccard, Jaro, Jaro-Winkler, Levenshtein, Metaphone, N-Gram, NYSIIS, Overlap, Ratcliff/Obershelp, Refined NYSIIS, Refined Soundex, Soundex, Weighted Levenshtein) -
exmatrix
Elixir library implementing a parallel matrix multiplication algorithm and other utilities for working with matrices. Used for benchmarking computationally intensive concurrent code. -
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bitmap
Bitmap implementation in Elixir using binaries and integers. Fast space efficient data structure for lookups -
Closure Table
Closure Table for Elixir - a simple solution for storing and manipulating complex hierarchies.
InfluxDB - Power Real-Time Data Analytics at Scale
* Code Quality Rankings and insights are calculated and provided by Lumnify.
They vary from L1 to L5 with "L5" being the highest.
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README
MonadEx
Summary
MonadEx introduces monads into Elixir. Monads encapsulate state and control the flow of code. A monad's bind operation is similar, but more powerful, than Elixir's built-in pipelines.
Usage
Included Monads
- Maybe
- A simple container representing either something or nothing.
- Result
- A container representing success or failure.
- List
- Lists are naturally monads, and conform to the necessary protocols.
- Writer
- Keeps a log in addition to tracking a value. The log may be a string, array, or any other 'Monoid'.
- Reader
- Holds a shared, environment state.
- State
- Also holds a shared environment state in addition to tracking a value.
Extending Monads
Monads may easily be extending by one of two ways:
- Use the provided
Monad.Behaviour.- Call
use Monad.Behaviourfirst in your monad. - Implement
return/1. - Implement
bind/2.
- Call
- Conform to the
Monadprotocol. Additionally, you should conform to theFunctorandApplicativeprotocols.
Composing Monads
Monads may be combined to make even more useful constructs. For example, you may want to use a state monad in combination with a result monad. The state monad can track a shared environment and the result monad can keep track of the success or failure state.
Other Useful Monads
MonadEx does not contain the following monads, but they may be useful in some situations. These monads and others may be added later.
- IO
- Continuation
- Random number generation
- Memoization
Resources for Understanding Monads
- Functors, Applicatives, and Monads in Pictures
- Three Useful Monads
- Functors, Applicative Functors, and Monoids
- A Fistful of Monads
- A Few Monads More
- Category Theory for Beginners
- Functional Programming Patterns
- Haskell Docs
- Wikipedia
Troubleshooting
Many of the problems that arise with monads is first not understanding functors, applicatives, and monads. See the listed resources for learning more about these concepts.
Another gotcha to watch out for is omitting parentheses. Omitting unnecessary parentheses is a great feature; however, just like Elixir's built-in pipelines, forgetting parentheses can create ambiguity and unexpected results. For example, the following (contrived) code is ambiguous:
monad
~>> transform flag
~>> process :all
It should instead be replaced with:
monad
~>> transform(flag)
~>> process(:all)
Contributing
Code contributions are welcomed. In order to maintain the integrity of the project, all pull requests must contain documentation and unit tests. See the existing tests and documentation for examples. Some easy ideas to contribute is to add more types of monads.
License
MonadEx is licensed under the MIT license, which is reproduced in its entirety here:
Copyright (c) 2015–2016 Robert Brown
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*Note that all licence references and agreements mentioned in the monadex README section above
are relevant to that project's source code only.