tff.structure.map_structure
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Applies fn to each entry in structure and returns a new structure.

tff.structure.map_structure(
    fn: Callable[..., object], *structures
) -> object

This is a special implementation of tf.nest.map_structure that works for Struct.

Args
`fn`	a callable that accepts as many arguments as there are structures.
`*structures`	a scalar, tuple, or list of constructed scalars and/or tuples/lists, or scalars. Note: numpy arrays are considered scalars.

Returns
A new structure with the same arity as `structure` and same type as `structure[0]`, whose values correspond to `fn(x[0], x[1], ...)` where `x[i]` is a value in the corresponding location in `structure[i]`.

Raises
`TypeError`	if `fn` is not a callable, or *structure is not all `Struct` or all `tf.Tensor` typed values.
`ValueError`	if `*structure` is empty.

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