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Monthly Downloads: 7,790
Programming language: Elixir
License: MIT License
Tags: Miscellaneous    
Latest version: v1.2.1

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README

Apex - Awesome Print for Elixir

Awesome Print is an Elixir library that pretty prints Elixir data structures in full color exposing their internal structure with proper indentation. It's a port of part of the functionality of Ruby's awesome awesome_print gem.

Installation

In order to install it via hex, add the reference to this package into the deps area of your mix.exs.

  defp deps do
    [
      {:apex, "~>1.2.1"}
    ]
  end

Examples

data = [false, 42, ~w(forty two), [time: "now"], %{foo: :bar}]

Apex.ap data

# Will output the following:
#[
#   [0] false
#   [1] 42
#   [2] [
#     [0] "forty"
#     [1] "two"
#   ]
#   [3] [
#     [0] time: "now"
#   ]
#   [4] %{
#      foo: bar
#   }
#]
#
#[false, 42, ~w(forty two), [time: "now"], %{foo: :bar}]

If the numbering is not for you, you can turn it off via Apex.ap(data, numbers: false).

Supported types

  • BitString
  • Integer
  • Float
  • Atom
  • List
  • Range
  • PID
  • Port
  • Function
  • MapSet
  • Map
  • Tuple
  • Reference
  • Elixir Records
  • Elixir Structs

Apex uses a protocol internally to format a given value. If there's something not yet in the box, you can extend the protocol Apex.Format.

Color customizations

You can customize the Apex colors on a per project or global basis. For project specific color configuration, you can specify the color table in your config/config.ex

use Mix.Config

config :apex, :colors, %{
  binary: :red
}

This can alternatively also be done at runtime by using the Application.put_env/3 function.

Please note, that you only have to specify the colors you actively want to change here. For the rest Apex will fallback to the defaults.

If you want to apply the same settings across multiple elixir projects, you can drop a .apexrc file into your home directory in order do the same thing. The configuration is an Elixir Map.

%{
  colors: %{
    binary: :yellow,
    true:   [:green, :bright]
  }
}

IMPORTANT: the global configuration will get compiled into your Apex version when you compile your app. You need to recompile Apex via mix deps.compile apex when you want to apply changes to the .apexrc file.

PRECEDENCE: When both project specific and global configuration are present, project specific configuration will take precedence.

For a full list of all available customizations, please take a look at the result of Apex.Format.Color.default_colors/0).

Awesome def aka adef

Inspired by @sasajuric's awesome blog post series about macros, Apex also contains an Apex flavored version of his deftracable macro. By using adef instead of def

import Apex.AwesomeDef
adef test(data, options \\ []) do
  data
end

all function invocations print trace outputs in the following format to the group leader (console):

iex(1)> Apex.test "foo"
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Function Elixir.Apex.test was called
defined in /Users/bjoernrochel/Coding/Laboratory/apex/lib/apex.ex:12
----------------------------------------------------------------------------------------------------
Parameters:
----------------------------------------------------------------------------------------------------
[
  [0] "foo"
  [1] []
]

----------------------------------------------------------------------------------------------------
Result:
----------------------------------------------------------------------------------------------------
"foo"

Note on Patches/Pull Requests

  • Fork the project on Github.
  • Make your feature addition or bug fix.
  • Add tests for it, making sure $ mix test is all green.
  • Do not rebase other commits than your own
  • Do not change the version in the mix file
  • Commit
  • Send me a pull request

License

(The MIT License)

Copyright (c) 2014-2018 Björn Rochel

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 Apex README section above are relevant to that project's source code only.