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Why are arrays covariant but generics are invariant?
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Via wikipedia:
Early versions of Java and C# did not include generics (a.k.a. parametric polymorphism).
In such a setting, making arrays invariant rules out useful polymorphic programs.
For example, consider writing a function to shuffle an array, or a functio...
Can attributes be added dynamically in C#?
...ypes, members, parameters, and return values aren't first-class objects in C# (e.g., the System.Type class is merely a reflected representation of a type). You can get an instance of an attribute for a type and change the properties if they're writable but that won't affect the attribute as it is ap...
How do I replace the *first instance* of a string in .NET?
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C# extension method that will do this:
public static class StringExt
{
public static string ReplaceFirstOccurrence(this string s, string oldValue, string newValue)
{
int i = s.IndexOf(oldValue);
ret...
Number of occurrences of a character in a string [duplicate]
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@FreeCoder24, just as C# is slower than Assembly in everything. If you want fast code, use Assembly. And BTW, LINQ is faster on sorting than the "native" framework methods.
– gdoron is supporting Monica
Jan 2...
Awaiting multiple Tasks with different results
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If you're using C# 7, you can use a handy wrapper method like this...
public static class TaskEx
{
public static async Task<(T1, T2)> WhenAll<T1, T2>(Task<T1> task1, Task<T2> task2)
{
return (await ta...
Will the base class constructor be automatically called?
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This is simply how C# is going to work. The constructors for each type in the type hierarchy will be called in the order of Most Base -> Most Derived.
So in your particular instance, it calls Person(), and then Customer() in the constructo...
System.IO.Packaging
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For a C# solution in Visual Studio 2010 with .NET 4.0:
In your project's Solution Explorer, right-click on References and select Add References from the context menu.
Select Assemblies in the left-hand pane, then click the Brows...
Real World Example of the Strategy Pattern
...your example not more a Factory Pattern? Also I think it will not work in C# for example. Your "getCipher()" method is a static method but in C# you cannot define a static method on an interface (neither in Java I think but for this I'm not sure).
– FrenchData
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How do you auto format code in Visual Studio?
...gain)
Your shortcuts might display differently to mine as I am set up for C# coding but navigating via the toolbar will get you to your ones.
If it isn't working, look for errors in your code, like missing brackets which stop auto format from working
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How can I make my own event in C#?
How can I make my own event in C#?
4 Answers
4
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