Checks that value is an atom.

Examples

iex> Constructor.Validate.is_atom(:foo)
{:ok, :foo}

iex> Constructor.Validate.is_atom(%{foo: "bar"})
{:error, "must be an atom"}

Checks if a value is a boolean with Kernel.is_boolean/1

Examples

iex> Constructor.Validate.is_boolean(true)
{:ok, true}

iex> Constructor.Validate.is_boolean("true")
{:error, "must be a boolean"}

Checks if input is a Date.t/0

Examples

iex> Constructor.Validate.is_date(%Date{year: 1999, month: 1, day: 1})
{:ok, %Date{year: 1999, month: 1, day: 1}}

iex> Constructor.Validate.is_date("foo")
{:error, "must be a Date"}

Checks that value is a float.

Examples

iex> Constructor.Validate.is_float(12.3)
{:ok, 12.3}

iex> Constructor.Validate.is_float(12)
{:error, "must be a float"}

Checks that value is an integer.

Examples

iex> Constructor.Validate.is_integer(12)
{:ok, 12}

iex> Constructor.Validate.is_integer("12")
{:error, "must be an integer"}

Checks that value is a list.

Examples

iex> Constructor.Validate.is_list(["foo", "bar"])
{:ok, ["foo", "bar"]}

iex> Constructor.Validate.is_list(%{foo: "bar"})
{:error, "must be a list"}

Checks that value is both a string, and not nonempty ("").

Examples

iex> Constructor.Validate.is_not_blank("a")
{:ok, "a"}

iex> Constructor.Validate.is_not_blank("")
{:error, "must not be blank"}

iex> Constructor.Validate.is_not_blank(12)
{:error, "must be a string"}

Checks if a value is a binary with Kernel.is_binary/1.

That means it will return {:ok, value} for both traditional Erlang binary and Elixir's String.t/0. This is usually what people mean when they say "string" in Elixir. However, string is a different type in Erlang, so make sure you make necessary conversions with another function.

Examples

iex> Constructor.Validate.is_string("foo")
{:ok, "foo"}

iex> Constructor.Validate.is_string(12)
{:error, "must be a string"}

Checks that value is a list and that each value is a string.

Examples

iex> Constructor.Validate.is_string_list(["foo", 12, "bar"])
{:error, "must be a list of strings"}

iex> Constructor.Validate.is_string_list(["foo", "bar", "baz"])
{:ok, ["foo", "bar", "baz"]}

The same as is_string/1, except that it will return {:ok, nil} if the value is nil.

Examples

iex> Constructor.Validate.is_string_or_nil(nil)
{:ok, nil}

Checks that value is a uuid.

Examples

iex> Constructor.Validate.is_uuid("8cd1939d-89ca-4927-9166-a221312a5712")
{:ok, "8cd1939d-89ca-4927-9166-a221312a5712"}

iex> Constructor.Validate.is_uuid("209klmas09k;")
{:error, "must be a UUID"}