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How to detect orientation change?
...fjv Certainly, I do not have a direct link to an Apple document, but I did include a screenshot of the compiler warning that XCode provides if you use the previous approach.
– CodeBender
Nov 7 '17 at 16:22
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What's an appropriate HTTP status code to return by a REST API service for a validation failure?
...nticated, and there was no operational failure (however even the spec does include some reserved codes like 402 Payment Required which aren't strictly speaking HTTP-related either, though it might be advisable to have that at the protocol level so that any device can recognize the condition).
If th...
difference between primary key and unique key
...d Non-Clustered Index on Unique-key.
3. Nullability: Primary key does not include Null values, whereas Unique-key can.
4. Existence: A table can have at most one primary key, but can have multiple Unique-key.
5. Modifiability: You can’t change or delete primary values, but Unique-key values can...
What is the function of the push / pop instructions used on registers in x86 assembly?
...p push/pop thanks to the stack engine (See Agner's microarch pdf). This include recent AMD CPUs, thanks to the Intel/AMD patent-sharing agreement.
– Peter Cordes
Jun 22 '16 at 13:24
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Fast way of counting non-zero bits in positive integer
...
But GMP is exactly for very large numbers, including numbers at and far beyond the sizes you mention.
– James Youngman
Mar 23 '12 at 10:45
1
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Should I Dispose() DataSet and DataTable?
...finalization.
Should Dispose be called on DataTable and DataSet objects? includes some explanation from an MVP:
The system.data namespace (ADONET) does not contain
unmanaged resources. Therefore there is no need to dispose any of those as
long as you have not added yourself something spec...
Wrap a delegate in an IEqualityComparer
...ct that any custom IEqualityComparer<T> implementation should really include a GetHashCode method; but nobody's bothered to explain why in any detail.
Here's why. Your question specifically mentions the LINQ extension methods; nearly all of these rely on hash codes to work properly, because t...
Difference between __str__ and __repr__?
...ame of the type of the object
together with additional information often including the name and
address of the object. A class can control what this function returns
for its instances by defining a __repr__() method.
Here is the documentation for str:
str(object='')
Return a string ...
How do I check CPU and Memory Usage in Java?
...fter garbage
collection, respectively. After minor collections the count includes
objects that aren't necessarily alive but can't be reclaimed, either
because they are directly alive, or because they are within or
referenced from the tenured generation. The number in parenthesis
(776768K) (...
what exactly is device pixel ratio?
...cal linear resolution
Other devices report different device pixel ratios, including non-integer ones. For example, the Nokia Lumia 1020 reports 1.6667, the Samsumg Galaxy S4 reports 3, and the Apple iPhone 6 Plus reports 2.46 (source: dpilove). But this does not change anything in principle, as you...