How do I convert a tuple of tuples to a one-dimensional list using list comprehension? [duplicate]

it’s typically referred to as flattening a nested structure. >>> tupleOfTuples = ((1, 2), (3, 4), (5,)) >>> [element for tupl in tupleOfTuples for element in tupl] [1, 2, 3, 4, 5] Just to demonstrate efficiency: >>> import timeit >>> it = lambda: list(chain(*tupleOfTuples)) >>> timeit.timeit(it) 2.1475738355700913 >>> lc = lambda: [element for tupl in … Read more

Why is there no piecewise tuple construction?

Question: Why doesn’t the same piecewise constructibility exist for arrays and tuples? My recollection is that piecewise construction was added to std::pair for one reason only: to support uses-allocator construction of the pair elements, i.e. to allow an allocator to be provided and conditionally passed to the elements if they support construction with an allocator … Read more

Array of tuples in Swift

It looks to me like resultArray.append() is treating the tuple a little bit like a variadic parameter, and trying to expand the tuple to match its own arguments. It’s complaining about your second parameter because it’s only expecting one. I haven’t seen this behavior for Array.append() documented anywhere, so I would say it’s a bug … Read more