Stefan Pochmann

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What causes [*a] to overallocate?

python python-3.x list cpython python-internals asked Mar 5, 2020 at 16:22

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91 votes

Why is copying a shuffled list much slower?

python python-internals asked Feb 8, 2017 at 7:48

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28 votes

Why [20, ..., 13, 14].min(2) => [13, 20]?

ruby min asked Aug 20, 2015 at 15:00

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14 votes

Why is array.min so slow?

ruby performance min built-in asked Jan 9, 2016 at 15:31

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14 votes

Why does unpacking this map object print "must be an iterable, not map"?

python python-3.6 asked Jul 28, 2017 at 1:08

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13 votes

Why does `mylist[:] = reversed(mylist)` work?

python list reverse assign python-internals asked Jun 2, 2015 at 18:45

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13 votes

pprint sorting dicts but not sets?

python python-3.x dictionary set pprint asked Jul 10, 2017 at 15:48

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8 votes

Why does `class X: mypow = pow` work? What about `self`?

python methods self asked Jun 7, 2015 at 12:38

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6 votes

How to watch Timsort move elements around?

python sorting timsort asked Aug 5, 2020 at 22:31

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5 votes

8 seconds for regex_match("", regex(".{40000}"));?

c++ regex performance asked Dec 10, 2016 at 11:43

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Top Answers

161

Return string with first match for a regex, handling case where there is no match

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126

Sort filenames in directory in ascending order

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Why is "1000000000000000 in range(1000000000000001)" so fast in Python 3?

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Finding first and last index of some value in a list in Python

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Theoretically can the Ackermann function be optimized?

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How to perform ceiling-division in integer arithmetic?

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List comprehensions in Python with mutable state between iterations

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Python: nested 'for' loops

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How to convert string to integer without using library functions in Python?

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Python Split list into sublists based on the first element in the sublists

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list around groupby results in empty groups

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What causes [*a] to overallocate?

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Efficiently find all the Pythagorean triplets where all numbers less than 1000

codereview.stackexchange.com

Efficiently find binary strings with low Hamming distance in large set

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One-liner to remove duplicates, keep ordering of list

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Why does python not stop loop when variable equates to the if statement

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Tidying up a list comprehension in Haskell

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Why is the median-of-medians algorithm described as using O(1) auxiliary space?

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Ruby's `lazy` less performant than allocating huge lists?

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How is the __contains__ method of the list class in Python implemented?

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Iterate all coprime pairs using constant space?

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What is the relationship between the Python data model and built-in functions?

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Check if array is an ordered subset

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how find all groups of subsets of set A? Set partitions in Python

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Using .iteritems() to iterate over key, value in Python dictionary

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Ruby's digits method performance

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Repeat list to max number of elements

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Automate the Boring Stuff With Python, Chapter 4 Exercise

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On Finding the Maximum Depth of an Arbitrarily Nested List

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How to watch Timsort move elements around?

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