60 clear solution for Flatten a List by DiZ - python coding challenges

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60 solution in Clear category for Flatten a List by DiZ

flat_list=f=lambda d:[d]if int==type(d)else sum(map(f,d),[])

April 29, 2014

Comments:

DiZ on April 29, 2014, 2:14 p.m.
And certainly possible to go down by changing type test. Edit: Well, Veky's idea breaks down character count: 'd*0==0'

Benjik on July 18, 2014, 5:06 p.m.
What is it doing?

DiZ on July 19, 2014, 8:34 a.m.
A recursive function that returns an int if it is or an accumulated flatten array: sum function adds all elements of its first-paramater iterator in its second parameter. The default one is 0, but it can also be a list (Warning: sum(--, []) is bad because complexity of this instruction is O(n**2), but here I just wanted to golf ;) )

texom512 on Aug. 1, 2015, 4:25 p.m.
Why d?

DiZ on Aug. 3, 2015, 10:13 a.m.
In this mission, default argument name was data: simple, isn't it?

aziz199505 on April 10, 2016, 4:34 a.m.
Hold My Beer I can do this easy xD JK. Very Cool!

Anshelen on March 16, 2019, 10:03 a.m.
Is it a pythonway to write all in one line? I imagine finding this string in project without comment and start panic

DiZ on March 19, 2019, 11:38 a.m.
No, this solution should be in creative category. It is meant for code-golfing, a programming game where you try to write the shortest possible solution.

Safwan_Samsudeen on Dec. 9, 2020, 8:49 a.m.
So why is it in the clear category?

NitrousWolf on Feb. 22, 2021, 2:02 p.m.
I ask myself this everytime I see the top answer in the Clear category :)

petergswhite on March 21, 2019, 12:52 p.m.
I wonder is this really that clear? Creative or Fast maybe a better tag.

vvnechy on May 14, 2019, 8:01 a.m.
Very smart, but not so clear at the first sight.

leonardo.galvao on July 10, 2019, 12:53 p.m.
Really nice! Voted for it, but I wouldn't categorize it as "clear" at all! Perhaps move it to "creative"?

ajlure on Dec. 12, 2019, 1:12 p.m.
is IT readable?

olegpython on Jan. 7, 2020, 3:56 p.m.
It's really cool, but not clear. It's more "creative"

Safwan_Samsudeen on Dec. 9, 2020, 8:51 a.m.
Only one thing, and it's not my idea, it's Pylint's. ``` Using type() instead of isinstance() for a typecheck. pylint(unidiomatic-typecheck) ```

leggewie on June 3, 2021, 11:34 a.m.
nice solution but wrong category, please move to creative, code golfing as about creativity and quirks not clarity

Mariusz_Lesniak on June 18, 2022, 1:52 p.m.
Its cool, but should be in creative instead clear.

List, list and list again

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