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Is Java really slow?
...it carries a small performance cost. UTF-8 looks like a better choice now.
Array access is a bit slower compared to C, due to bounds checks. The penalty used to be big, but is now small (Java 7 optimizes away a lot of redundant bounds checks).
Lack of arbitrary memory access can make some I/O and bi...
Pandas - Get first row value of a given column
...ee from the documentation that it says "Warning: We recommend using Series.array or Series.to_numpy(), depending on whether you need a reference to the underlying data or a NumPy array." but I'm not sure exactly what that means
– aydow
Jan 16 at 3:01
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Common programming mistakes for Clojure developers to avoid [closed]
...a.lang.IllegalArgumentException: Wrong number of args passed to: PersistentArrayMap
because the #() reader macro gets expanded to
(fn [%1 %2] ({%1 %2}))
with the map literal wrapped in parenthesis. Since it's the first element, it's treated as a function (which a literal map actually is), but...
Multiline strings in JSON
...create there are not multiline strings (which is not possible anyway), but arrays with strings inside
– Samuel Rivas
Jun 12 '15 at 13:04
3
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How to return a string value from a Bash function
... referenced by name's value. The -n attribute cannot be applied to
array variables.
...
When used in a function, declare and typeset make each name local,
as with the local command, unless the -g option is supplied...
and also:
PARAMETERS
A variable can be assigned the nameref att...
What is the difference between HashSet and List?
...ollection with O(1) random access than can grow dynamically (think dynamic array). You can test containment in O(n) time (unless the list is sorted, then you can do a binary search in O(log n) time).
Maybe you can explain with an example in what cases HashSet<T> should be prefered against ...
Representing graphs (data structure) in Python
...used for the list as abstraction.
Python list is implemented as a dynamic array of references, Python tuple is implemented as static array of references with constant content (the value of references cannot be changed). Because of that they can be easily indexed. This way, the list can be used also...
Best way to determine user's locale within browser
...) an experimental feature supported by all modern browsers that returns an array of language preference: navigator.languages //["en-US", "zh-CN", "ja-JP"] This should work on at least 95% of browsers in 2020.
– Cornelius Roemer
Mar 9 at 13:11
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Generating all permutations of a given string
...
Elegant, yes. But a solution that converts to a char array and swaps to generate the permutations will require much less copying and generate much less garbage. Also this algorithm fails to take repeated characters into account.
– Gene
Ma...
Pass complex parameters to [Theory]
...element in the sequence returned by the enumerator is an object[] and each array must be the same length and that length must be the number of arguments to your test case (annotated with the attribute [MemberData] and each element must have the same type as the corresponding method parameter. (Or m...