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Java ArrayList copy
... and 10 from one arraylist to another new arraylist. In my application the range would be much bigger.
– Ashwin
Oct 16 '12 at 9:46
1
...
Is there a Python caching library?
...import lru_cache
@lru_cache(maxsize=256)
def f(x):
return x*x
for x in range(20):
print f(x)
for x in range(20):
print f(x)
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Choosing a Windows automation scripting language. AutoIt vs Autohotkey [closed]
...utoHotkey is nice for quick keystroke macros and AutoIt has a much broader range of automation functionality and user-defined functions (UDFs) allow a range of useful things such as XML and database interaction. When automation requires a lot of GUI interaction I use AutoIt.
...
How to diff a commit with its parent?
...).
Note: the description in git-rev-parse(1) manpage talks about revision ranges, where it needs to work also for merge commits, with more than one parent. Then r1^! is "r1 --not r1^@" i.e. "r1 ^r1^1 ^r1^2 ..."
Also, you can use git show COMMIT to get commit description and diff for a commit. If...
How Big can a Python List Get?
...
Sure it is OK. Actually you can see for yourself easily:
l = range(12000)
l = sorted(l, reverse=True)
Running the those lines on my machine took:
real 0m0.036s
user 0m0.024s
sys 0m0.004s
But sure as everyone else said. The larger the array the slower the operations will be....
How to print a dictionary's key?
...n x.items()))
# To print all pairs of (key, value) one at a time
for e in range(len(x)):
print(([key for key in x.keys()][e], [value for value in x.values()][e]))
# To print all pairs (key, value) in a tuple
print(tuple(([key for key in x.keys()][i], [value for value in x.values()][i]) for i i...
What is the purpose of a question mark after a type (for example: int? myVariable)?
...of the System.Nullable struct. A
nullable type can represent the correct range of values for its
underlying value type, plus an additional null value. For example, a
Nullable<Int32>, pronounced "Nullable of Int32," can be assigned any
value from -2147483648 to 2147483647, or it can be ...
What would cause an algorithm to have O(log n) complexity?
...
Also note that this is the most concise way to denote the number in this range. Any reduction will lead to information loss, as a missing digit can be mapped to 10 other numbers. For example: 12* can be mapped to 120, 121, 122, …, 129.
2. How do you search for a number in (0, N - 1)?
Taking N ...
Check if something is (not) in a list in Python
...your element is at the start of the list, in evaluates faster:
lst = list(range(10001))
%timeit 1 in lst
%timeit 10000 in lst # Expected to take longer time.
68.9 ns ± 0.613 ns per loop (mean ± std. dev. of 7 runs, 10000000 loops each)
178 µs ± 5.01 µs per loop (mean ± std. dev. of 7 runs, ...
How to check if an object is a generator object in python?
...pes.GeneratorType
<class 'generator'>
>>> gen = (i for i in range(10))
>>> isinstance(gen, types.GeneratorType)
True
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