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How do you add an array to another array in Ruby and not end up with a multi-dimensional result?
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728
You've got a workable idea, but the #flatten! is in the wrong place -- it flattens its receiver...
jQuery's jquery-1.10.2.min.map is triggering a 404 (Not Found)
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1273
If Chrome DevTools is reporting a 404 for a .map file (maybe jquery-1.10.2.min.map, jquery.min...
LINQ with groupby and count
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412
After calling GroupBy, you get a series of groups IEnumerable<Grouping>, where each Groupi...
List comprehension in Ruby
...lock.nil?
self.collect(&block).compact
end
end
some_array = [1, 2, 3, 4, 5, 6]
new_array = some_array.comprehend {|x| x * 3 if x % 2 == 0}
puts new_array
Prints:
6
12
18
I would probably just do it the way you did though.
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Take the content of a list and append it to another list
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You probably want
list2.extend(list1)
instead of
list2.append(list1)
Here's the difference:
>>> a = range(5)
>>> b = range(3)
>>> c = range(2)
>>> b.append(a)
>>> b
[0, 1, 2, [0, 1, 2, 3, 4]]
>...
How to pretty print nested dictionaries?
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21 Answers
21
Active
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How to create NS_OPTIONS-style bitmask enumerations in Swift?
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261
Swift 3.0
Almost identical to Swift 2.0. OptionSetType was renamed to OptionSet and enums are...
How to get the instance id from within an ec2 instance?
How can I find out the instance id of an ec2 instance from within the ec2 instance?
32 Answers
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Jasmine.js comparing arrays
... {
it('passes if arrays are equal', function() {
var arr = [1, 2, 3];
expect(arr).toEqual([1, 2, 3]);
});
});
Just for information:
toBe() versus toEqual(): toEqual() checks equivalence. toBe(), on the
other hand, makes sure that they're the exact same object.
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What is Scala's yield?
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206
It is used in sequence comprehensions (like Python's list-comprehensions and generators, where...