{{alias}}( str )
    Converts a string to constant case.

    Parameters
    ----------
    str: string
        Input string.

    Returns
    -------
    out: string
        Constant-cased string.

    Examples
    --------
    > var out = {{alias}}( 'Hello World!' )
    'HELLO_WORLD'
    > out = {{alias}}( 'I am a tiny little teapot' )
    'I_AM_A_TINY_LITTLE_TEAPOT'

    See Also
    --------