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Merge pull request #48 from vict0rsch/master

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[ENHANCEMENT]  use set() to ensure constant lookup time
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Angelos Chalaris
2019-08-19 14:03:07 +03:00
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parent bab54e53d3 2574fa0c6b
commit 3d2ebe6bf7
1 changed files with 3 additions and 2 deletions
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snippets/difference.md
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@ -2,11 +2,12 @@
Returns the difference between two iterables.
Use list comprehension to only keep values not contained in `b`
Use list comprehension to only keep values not contained in `b`.
```python
def difference(a, b):
return [item for item in a if item not in b]
_b = set(b)
return [item for item in a if item not in _b]
```
``` python
difference([1, 2, 3], [1, 2, 4]) # [3]