indifferent alternatives and similar packages
Based on the "Algorithms and Data structures" category.
Alternatively, view indifferent alternatives based on common mentions on social networks and blogs.
-
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. -
Closure Table
Closure Table for Elixir - a simple solution for storing and manipulating complex hierarchies. -
bitmap
Bitmap implementation in Elixir using binaries and integers. Fast space efficient data structure for lookups
InfluxDB – Built for High-Performance Time Series Workloads

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README
Indifferent
This library provides a wrapper for indifferent access on maps, structs, lists and tuples.
You could use Indifferent to wrap a parameters hash or something without having to distingish on the type of keys (atoms or binaries) akin to the features of Rails' HashWithIndifferentAccess.
Installation
Available in Hex, the package can be installed as:
- Add
indifferent
to your list of dependencies inmix.exs
:
def deps do
[{:indifferent, "~> 0.9"}]
end
- Ensure
indifferent
is started before your application:
def application do
[applications: [:indifferent]]
end
Usage
Be sure to look at the documentation for more examples.
Indifferent module
##
# Wrapping a map and accesing it with an atom key
iex> i = Indifferent.access(%{"a" => 1})
iex> i[:a]
1
##
# You can provide your custom list of key transformations
# and specify how are keys indifferents for your use case.
iex> i = Indifferent.access(%{"a" => 1},
...> key_transforms: [fn x, _indifferent -> {:ok, String.downcase(x)} end])
iex> i["A"]
1
##
# Indifferent is compatible with Elixir's Access
iex> Kernel.get_in(%{"a" => 1}, [Indifferent.at(:a)])
1
iex> Kernel.get_in(Indifferent.access(%{"a" => 1}), [:a])
1
##
# Or you can auto wrap data by using Indifferent's version of
# `get_in/2`, `get_and_update_in/3`, `pop_in/2`
iex> Indifferent.get_and_update_in(%{"a" => %{"x" => 1}}, [:a, :x], fn x -> {x * 2, x * 4} end)
{2, %{"a" => %{"x" => 4}}}
##
# Indifferent `path/2` lets you use any syntax you want for
# accessing the nested value you need.
iex> %{"b" => %{"c" => %{"d" => %{"e" => 4}}}} |> Indifferent.path(b["c"][:d].e)
4
##
# And works on lists, tuples, keywords
iex> [9, %{"c" => {:ok, [e: 4]}}] |> Indifferent.path(1.c["1"].e)
4
##
# Accessing nil yields nil
iex> nil |> Indifferent.path(foo.bar)
nil
##
# Can access inside structs
iex> %User{name: "john"} |> Indifferent.path(name)
"john"
##
# And can be used with Kernel methods.
iex> Kernel.get_in(%{"a" => {0, 2}}, Indifferent.path(a["1"]))
2
##
# `path/2` can also take a Keyword of paths and returns a keyword of values
iex> %{"b" => [1, 2]} |> Indifferent.path(x: b[-1])
[x: 2]
##
# The `read/1` macro is a convenience that reads an indifferent path on the first value
iex> System.put_env("COLOR", "red")
iex> Indifferent.read(System.get_env.COLOR)
"red"
##
# Just like `path/2`, the `read/1` macro can also take a Keyword of named things to read
iex> System.put_env("COLOR", "red")
iex> Process.put(:color, "blue")
iex> Indifferent.read(a: System.get_env.COLOR, b: Process.get.color)
[a: "red", b: "blue"]
Indifferent sigils
The ~i
and ~I
sigils are shortcuts for the API
previously described.
iex> import Indifferent.Sigils
Indifferent.Sigils
##
# `~i` is the sigil for `Indifferent.read/1`
iex> data = %{"a" => [b: {10, 20}]}
iex> ~i(data.a.b[1])
20
# When piped a value it will act just like `Indifferent.path/2`
iex> data = %{"a" => [b: {10, 20}]}
iex> data |> ~i(a.b[1])
20
##
# `~I` is the sigil version of `Indifferent.path/1`
# for use with Kernel access functions.
iex> data = %{"a" => [b: {10, 20}]}
iex> Kernel.get_in(data, ~I(a.b[1]))
20
iex> data = %{"a" => [b: {10, 20}]}
iex> Kernel.pop_in(data, ~I(a.b))
{{10, 20}, %{"a" => []}}