Deep

Blazing fast and zero overhead merging of deep map() | struct() | keyword().

implementet with a "right is right" algorithm

Examples

iex> Deep.merge(%{a: 1, b: [x: 10, y: 9]}, %{b: [y: 20, z: 30], c: 4})
%{a: 1, b: [x: 10, y: 20, z: 30], c: 4}

iex> Deep.merge(1..6, 12..6)
1..12

iex> Deep.merge(Stream.map(1..3, &IO.inspect/1), Stream.map([4, 5], &IO.inspect/1))
#Stream<[enum: [4, 5], funs: [#Function<48.51129937/1 in Stream.map/2>]]>

Benchmarks

Operating System: macOS"
CPU Information: Intel(R) Core(TM) i7-4578U CPU @ 3.00GHz
Number of Available Cores: 4
Available memory: 16 GB
Elixir 1.7.1
Erlang 21.0.4

Benchmark suite executing with the following configuration:
warmup: 2 s
time: 10 s
memory time: 2 s
parallel: 1
inputs: none specified
Estimated total run time: 42 s


Benchmarking Deep.merge/2...
Benchmarking DeepMerge.deep_merge/2...
Benchmarking Map.merge/3...

Name                             ips        average  deviation         median         99th %
Deep.merge/2                 12.85 K       77.84 μs   ±176.05%          66 μs         196 μs
Map.merge/3                   8.02 K      124.70 μs    ±16.67%         118 μs         222 μs
DeepMerge.deep_merge/2        5.06 K      197.50 μs    ±43.25%         181 μs         413 μs

Comparison:
Deep.merge/2                 12.85 K
Map.merge/3                   8.02 K - 1.60x slower
DeepMerge.deep_merge/2        5.06 K - 2.54x slower

Memory usage statistics:

Name                           average  deviation         median         99th %
Deep.merge/2                 153.09 KB     ±7.13%      154.33 KB      154.33 KB
Map.merge/3                  183.49 KB     ±2.89%      183.69 KB      183.69 KB
DeepMerge.deep_merge/2       226.15 KB     ±2.33%      226.45 KB      226.45 KB

Comparison:
Deep.merge/2                 154.33 KB
Map.merge/3                  183.69 KB - 1.19x memory usage
DeepMerge.deep_merge/2       226.45 KB - 1.47x memory usage

Documentation

hex documentation for deep

Installation

If available in Hex, the package can be installed by adding deep to your list of dependencies in mix.exs:

def deps do
  [
    {:deep, "~> 0.1.0"}
  ]
end

LICENSE

(The MIT License)

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.