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- Update some sheets which have very long sections - Remove `layout: 2017/sheet` (everything has the same layout now) - Remove outdated sheets
34 lines
717 B
Markdown
34 lines
717 B
Markdown
---
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title: Elixir metaprogramming
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category: Elixir
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---
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### Kernel
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Most of these magic is defined in [Kernel.SpecialForms](http://devdocs.io/elixir/elixir/kernel.specialforms).
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### Pseudo-variables
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```elixir
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__DIR__ # current dir
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__MODULE__ # current module
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__CALLER__ # caller of the function
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```
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### [`__ENV__`](http://devdocs.io/elixir/elixir/kernel.specialforms#__ENV__/0)
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```elixir
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Map.keys(__ENV__)
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[:__struct__, :aliases, :context, :context_modules, :export_vars, :file,
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:function, :functions, :lexical_tracker, :line, :macro_aliases, :macros,
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:module, :requires, :vars]
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```
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```elixir
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__CALLER__.module |> Module.definitions_in |> IO.inspect
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```
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```elixir
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apply(Enum, :reverse, [[1, 2, 3]])
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```
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