42 lines
1.5 KiB
Python
42 lines
1.5 KiB
Python
# Copyright 2017 The Bazel Authors. All rights reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
"""Skylib module containing functions that operate on dictionaries."""
|
|
|
|
def _add(*dictionaries):
|
|
"""Returns a new `dict` that has all the entries of the given dictionaries.
|
|
|
|
If the same key is present in more than one of the input dictionaries, the
|
|
last of them in the argument list overrides any earlier ones.
|
|
|
|
This function is designed to take zero or one arguments as well as multiple
|
|
dictionaries, so that it follows arithmetic identities and callers can avoid
|
|
special cases for their inputs: the sum of zero dictionaries is the empty
|
|
dictionary, and the sum of a single dictionary is a copy of itself.
|
|
|
|
Args:
|
|
*dictionaries: Zero or more dictionaries to be added.
|
|
|
|
Returns:
|
|
A new `dict` that has all the entries of the given dictionaries.
|
|
"""
|
|
result = {}
|
|
for d in dictionaries:
|
|
result.update(d)
|
|
return result
|
|
|
|
dicts = struct(
|
|
add = _add,
|
|
)
|