@stdlib/array/base/group-indices/docs/repl.txt

Arrays.

{{alias}}( x, groups )
    Groups element indices as arrays associated with distinct keys.

    If provided an empty array, the function returns an empty object.

    Parameters
    ----------
    x: ArrayLike
        Input array.

    groups: ArrayLike
        An array defining which group an element in the input array belongs to.
        Each value in `groups` should resolve to a value which can be serialized
        as an object key.

    Returns
    -------
    out: Object
        Group results.

    Examples
    --------
    > var x = [ 'beep', 'boop', 'foo', 'bar' ];
    > var g = [ 'b', 'b', 'f', 'b' ];
    > var out = {{alias}}( x, g )
    { 'b': [ 0, 1, 3 ], 'f': [ 2 ] }
    > g = [ 1, 1, 2, 1 ];
    > out = {{alias}}( x, g )
    { '1': [ 0, 1, 3 ], '2': [ 2 ] }

    See Also
    --------