IfElse v0.1.0

IfElse (IfElse v0.1.0)

Functions providing conditional logic.

Interactive Elixir (1.14.0) - press Ctrl+C to exit (type h() ENTER for help)
iex(1)> import IfElse
IfElse
iex(2)> is_empty?("")
true
iex(3)> empty_else("foo", "bar")
"foo"
iex(4)> empty_else("", "bar")
"bar"
iex(5)> empty_else("", fn -> "bar" end)
"bar"
iex(6)> coalesce([false, nil, "true", false])
"true"
iex(7)> put_if(%{one: %{two: :three}}, :four, [:one, :two])
%{one: %{two: :four}}
iex(8)> put_if(%{one: %{two: :three}}, nil, [:one, :two])
%{one: %{two: :three}}

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Functions

call_if(arg1, arg2, function)

Call the two argument function with arg1 and arg2 if arg2 is truthy.

coalesce(list)

Return the first truthy element in the list, otherwise return nil.

empty_else(value, else_value)

If the value is nil or an empty string, return the else_value. Otherwise, return the value.

is_empty?(arg1)

Check for empty strings, where empty is nil or "".

put_if(structure, value, path)

If value is truthy, put it in the structure at path and return the updated structure. Otherwise return the structure unchanged.

Link to this section Functions

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call_if(arg1, arg2, function)

@spec call_if(
  arg1 :: any(),
  arg2 :: nil | false | any(),
  function :: (any(), any() -> any())
) :: any()

Call the two argument function with arg1 and arg2 if arg2 is truthy.

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coalesce(list)

@spec coalesce(list()) :: nil | any()

Return the first truthy element in the list, otherwise return nil.

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empty_else(value, else_value)

@spec empty_else(
  value :: nil | String.t() | any(),
  else_value :: (() -> any()) | any()
) :: any()

If the value is nil or an empty string, return the else_value. Otherwise, return the value.

If else_value is a function, it is called.

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is_empty?(arg1)

@spec is_empty?(nil | String.t()) :: true | false

Check for empty strings, where empty is nil or "".

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put_if(structure, value, path)

@spec put_if(structure :: Access.t(), value :: function() | any(), path :: list()) ::
  Access.t()

If value is truthy, put it in the structure at path and return the updated structure. Otherwise return the structure unchanged.