Unique Elements in a List

[Edvard Majakari]

James Stroud <jstroud at mbi.ucla.edu> writes:

> from sets import Set
>
> data = [0.1,0.5,0.6,0.4,0.1,0.5,0.6,0.9]
>
> [x for x in Set(data) if data.count(x) == 1]

Um.

...I must have missed something, but I'll post nevertheless:

wouldn't just

[x for x in data if data.count(x) == 1]

suffice? it is also "stable"  preserving order of items. Lemme demo:

>>> [x for x in Set(data) if data.count(x) == 1]
[0.90000000000000002, 0.40000000000000002]

>>> [x for x in data if data.count(x) == 1]
[0.40000000000000002, 0.90000000000000002]

Though I'll admit I also thought of Sets first, because I didn't remember
there was such a nice method list.count().

-- 
# Edvard Majakari		Software Engineer
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