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Python creating a dictionary of lists
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>>> d
defaultdict(<type 'list'>, {1: ['1'], 2: ['1', '2'], 3: ['2']})
>>> d.items()
[(1, ['1']), (2, ['1', '2']), (3, ['2'])]
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How can I get the intersection, union, and subset of arrays in Ruby?
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3 Answers
3
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New Array from Index Range Swift
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183
This works for me:
var test = [1, 2, 3]
var n = 2
var test2 = test[0..<n]
Your issue could...
Does a C# app track how long its been running?
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3 Answers
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Appending an element to the end of a list in Scala
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List(1,2,3) :+ 4
Results in List[Int] = List(1, 2, 3, 4)
Note that this operation has a complexity of O(n). If you need this operation frequently, or for long lists, consider using another data type (e.g. a ListBuffer).
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Emulate ggplot2 default color palette
...lt color palette for a desired number of colors. For example, an input of 3 would produce a character vector of HEX colors with these colors:
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What are 'get' and 'set' in Swift?
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38
That's actually explained right before the code:
In addition to simple properties that are sto...
ActiveRecord, has_many :through, and Polymorphic Associations
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3 Answers
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How to join two sets in one line without using “|”
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320
You can use union method for sets: set.union(other_set)
Note that it returns a new set i.e it...
How to convert a set to a list in python?
...;> <type 'list'>
Do you want something like
my_set = set([1,2,3,4])
my_list = list(my_set)
print my_list
>> [1, 2, 3, 4]
EDIT :
Output of your last comment
>>> my_list = [1,2,3,4]
>>> my_set = set(my_list)
>>> my_new_list = list(my_set)
>>> ...