On 22/10/2019 06:43, Richard Musil wrote:
It is not a "concatenation" though, because you lost {"key1": "val1"}
in the process. The concatenation is not _just_ "writing something
after something", you can do it with anything, but the actual
operation, producing the result.
My point is that if I saw {"key1": "val1", "key2": "val2"} + {"key1":
"val3"}, I would expect that it would be equivalent to {"key1": "val1",
"key2": "val2", "key1": "val3"}.
Similarly, I would expect that
deque([1, 2, 3], maxlen=4) + deque([4, 5]) == deque([1, 2, 3, 4, 5],
maxlen=4) == deque([2, 3, 4, 5], maxlen=4)
which indeed is true.
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