Cloud number... creative solution for Sum of Digits by veky - python coding challenges

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Cloud number... solution in Creative category for Sum of Digits by veky

sum_digits = lambda x: x and (x - 1) % 9 + 1

Sept. 12, 2022

Comments:

mithilkotak on Oct. 2, 2022, 6:13 a.m.
Very clever, fast and compact! It is interesting that an int is returned insted of a bool.

mithilkotak on Oct. 2, 2022, 6:19 a.m.
Very clever,fast and compact! It is interesting that an int is returned instead of a bool.

veky on Oct. 2, 2022, 1:22 p.m.
There's no "instead of"... bools are ints too. 😉

mithilkotak on Oct. 2, 2022, 1:55 p.m.
I thought the result of <something1> and <something2> is always True or False. Can you explain or give a link to an explanation of behaviour of "and" in your solution?

veky on Oct. 2, 2022, 1:59 p.m.
<a href="https://docs.python.org/3/library/stdtypes.html">https://docs.python.org/3/library/stdtypes.html</a>#truth <a href="https://stackoverflow.com/a/22653528">https://stackoverflow.com/a/22653528</a> HTH. If you have more questions, feel free to ask.

veky on Dec. 5, 2022, 4:01 a.m.
Are the clouds numbered starting from 0? Or 1? :-D

Sim0000 on Sept. 23, 2023, 11:36 a.m.
Great!

Strings Theory

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