Fixes #15: Set literals

This commit is contained in:
Adam 2013-06-28 21:15:33 -07:00
parent e1424579e7
commit 04cedf9844

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@ -217,18 +217,23 @@ filled_dict.setdefault("five", 6) #filled_dict["five"] is still 5
# Sets store ... well sets # Sets store ... well sets
empty_set = set() empty_set = set()
# Initialize a set with a bunch of values # Initialize a set with a bunch of values
filled_set = set([1,2,2,3,4]) # filled_set is now set([1, 2, 3, 4]) some_set = set([1,2,2,3,4]) # filled_set is now set([1, 2, 3, 4])
# Since Python 2.7, {} can be used to declare a set
filled_set = {1 2 2 3 4} # => {1 2 3 4}
# Add more items to a set # Add more items to a set
filled_set.add(5) # filled_set is now set([1, 2, 3, 4, 5]) filled_set.add(5) # filled_set is now {1, 2, 3, 4, 5}
# Do set intersection with & # Do set intersection with &
other_set = set([3, 4, 5 ,6]) other_set = set{3, 4, 5, 6}
filled_set & other_set #=> set([3, 4, 5]) filled_set & other_set #=> {3, 4, 5}
# Do set union with | # Do set union with |
filled_set | other_set #=> set([1, 2, 3, 4, 5, 6]) filled_set | other_set #=> {1, 2, 3, 4, 5, 6}
# Do set difference with - # Do set difference with -
set([1,2,3,4]) - set([2,3,5]) #=> set([1, 4]) {1,2,3,4} - {2,3,5} #=> {1, 4}
# Check for existence in a set with in # Check for existence in a set with in
2 in filled_set #=> True 2 in filled_set #=> True