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static constructors in C++? I need to initialize private static objects
...a subobject of MyClass. Subobjects are initialised in this order: virtual base class subobjects, in depth-first, left-to-right order (but only initialising each distinct subobject once); then plain base class subobjects, in depth-first, left-to-right order; then member subobjects in order of declar...
Difference between jQuery parent(), parents() and closest() functions
...ncestor element to a temporary collection; it then filters that
collection based on a selector if one is supplied
The returned jQuery object contains zero, one, or multiple elements
.parent()
Given a jQuery object that represents a set of DOM elements, the
.parent() method allows us to search thro...
What's the difference setting Embed Interop Types true and false in Visual Studio?
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Embedded interop assemblies gave me trouble in a plug-in-based system, in which both the host and the plugins depended on the same COM-object. Another problem was merging such assemblies with ILMerge.
– Ant_222
Aug 4 at 13:37
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Abstract classes in Swift Language
..., this doesn't force a subclass to override a function while also having a base implementation of that function in the parent class.
– MLQ
Mar 27 '15 at 6:08
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Should I implement __ne__ in terms of __eq__ in Python?
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Python, should I implement __ne__() operator based on __eq__?
Short Answer: Don't implement it, but if you must, use ==, not __eq__
In Python 3, != is the negation of == by default, so you are not even required to write a __ne__, and the documentation is no longer op...
What is a web service endpoint?
..., too, and a question: Why not just call it (i.e. so called "endpoint") a "base URI"? Is there a fundamental difference between an "endpoint" and a "base URI"? Thanks.
– Withheld
Jul 28 '15 at 17:49
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LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria
...OrDefault have to iterate over at most 2 items if Linq is talking to a database for example? Just wondering..
– Memet Olsen
Jun 14 '13 at 7:50
3
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Django - filtering on foreign key properties
I'm trying to filter a table in Django based on the value of a particular field of a ForeignKey .
3 Answers
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Fastest way to check if string contains only digits
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Here's some benchmarks based on 1000000 parses of the same string:
Updated for release stats:
IsDigitsOnly: 384588
TryParse: 639583
Regex: 1329571
Here's the code, looks like IsDigitsOnly is faster:
class Program
{
private stati...
Practical uses for the “internal” keyword in C#
...SDN (via archive.org):
A common use of internal access is in component-based development because it enables a group of components to cooperate in a private manner without being exposed to the rest of the application code. For example, a framework for building graphical user interfaces could prov...