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A dependency-free utility library containing 100+ useful functions.

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moar lib term.ex
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lib/term.ex 

defmodule Moar.Term do

  # @related [test](/test/term_test.exs)



  @moduledoc "Extra functions for terms."



  @doc "Returns true if the term is blank, nil, or empty"

  @spec blank?(any()) :: boolean()

  def blank?(nil), do: true

  def blank?(s) when is_binary(s), do: s |> String.trim() |> String.length() == 0

  def blank?([]), do: true

  def blank?(list) when is_list(list), do: false

  def blank?(m) when is_map(m), do: map_size(m) == 0

  def blank?(true), do: false

  def blank?(false), do: true

  def blank?(_), do: false



  @doc "Returns `value` unless it is blank, in which case it returns `default`"

  @spec or_default(any(), any()) :: any()

  def or_default(value, default), do: if(present?(value), do: value, else: default)



  @doc "Returns true if the term is not blank, nil, or empty"

  @spec present?(any()) :: boolean()

  def present?(term), do: !blank?(term)



  @doc "Returns the value if it is present (via `present?`), or else returns the default value"

  @spec presence(any(), any()) :: any()

  def presence(term, default \\ nil), do: if(present?(term), do: term, else: default)

end