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Cleaner way to do a null check in C#? [duplicate]
...the null object pattern and here for instructions concerning singletons in C#) which allows you to use classical comparison.
if (person.Contact.Address.City == NullCity.Instance)
Personally, I prefer this approach because I think it is easier to read for people not familiar with the pattern.
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What is the best algorithm for overriding GetHashCode?
... x, y
By the way, the earlier algorithm is the one currently used by the C# compiler for anonymous types.
This page gives quite a few options. I think for most cases the above is "good enough" and it's incredibly easy to remember and get right. The FNV alternative is similarly simple, but uses di...
How do I remove diacritics (accents) from a string in .NET?
... created a version of CodeIgniter's convert_accented_characters($str) into C# that is easily customisable:
using System;
using System.Text;
using System.Collections.Generic;
public static class Strings
{
static Dictionary<string, string> foreign_characters = new Dictionary<string, str...
Sleep Command in T-SQL?
...
Here is a very simple piece of C# code to test the CommandTimeout with.
It creates a new command which will wait for 2 seconds.
Set the CommandTimeout to 1 second and you will see an exception when running it.
Setting the CommandTimeout to either 0 or some...
Why do we need the “event” keyword while defining events?
...s) read my article on this topic. (At some point I need to update this for C# 4, which changes field-like events very slightly. The gist of it is still correct though.)
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Creating threads - Task.Factory.StartNew vs new Thread()
...ncellation to start with)
Potentially having a return value
Using await in C# 5
Better control over scheduling (if it's going to be long-running, say so when you create the task so the task scheduler can take that into account)
Note that in both cases you can make your code slightly simpler with m...
What is the “Execute Around” idiom?
...8 lambda expressions can be implemented like in many other languages (e.g. C# lambda expressions, or Groovy), and this special case is handled since Java 7 with try-with-resources and AutoClosable streams.
Although "allocate and clean-up" is the typical example given, there are plenty of other poss...
Why functional languages? [closed]
...s of modern languages have elements from functional programming languages. C# 3.0 has a lot functional programming features and you can do functional programming in Python too. I think the reasons for the popularity of functional programming is mostly because of two reasons: Concurrency is getting t...
Advantages of stateless programming?
...er. I think that's the biggest difference. I've programmed in both F# and C#, and there's a lot less "fighting the language" in F#, which I love. You don't have to think about the details in F#. Here's a few examples of what I've found I really enjoy.
For example, even though F# is statically type...
Simple state machine example in C#?
...d, Pause Command, Resume Command, Exit Command).
You can convert this to C# in a handful of ways, such as performing a switch statement on the current state and command, or looking up transitions in a transition table. For this simple state machine, I prefer a transition table, which is very easy ...