How "async void" actually works
Let’s say I have this code (C#): void SomeFunc() { HandlerOne(); HandlerTwo(); } async void HandlerOne() { DoX(); await DoYAsync(); DoZ(); } In this case HandlerOne() will return to the […]
C#
Changing order of enum values in C# breaks binary compatibility badly
Suppose I have a public interface that uses this enum: public enum LogLevel // v1 { Info, Warning, Error, Debug } There is a problem with this enum: the values […]
.NET: String Constants vs Static Readonly Fields
Numerous books and articles explain the difference between public const string Foo = “foo”; and public static readonly string Foo = “foo”; The former is treated as true constant that […]
PLinq and source IEnumerable thread safety
As I discovered that the source IEnumerable is called by PLINQ from multiple threads, it made me thinking: how can it possibly work? E.g. when someone writes code like this: […]
PLinq's AsParallel() makes concurrent calls to underlying IEnumerable
I am trying to play with PLINQ, and I was wondering, if I have an enumerable that, say, reads lines from a file, or stock prices off Yahoo Finance, would […]
C# Namespaces and Backward Compatibility – Part 1
Namespaces are a great way to organize code. However, I recently found out that even putting your classes in a carefully organized namespace hierarchy will not shield you from name […]
C# decimal.Parse() won't parse 1e-10
In C# code you can write something like decimal d = 1e-10m; However, decimal.Parse(“1e-10”) throws an exception: “System.FormatException: Input string was not in a correct format”. Not cool.
IEnumerable: lazy and dangerous
Time and time again I am burnt by the same bug. There are two kinds of enumerables in .NET: enumerators and generators. Enumerators go over some collection and return its […]
.NET: decimal is not primitive?
typeof(decimal).IsPrimitive returns false. Apparently,
C# Lambdas: Do you know what you captured?
Posted a larger and more structured article on the (somewhat surprising) capture rules for outer variables inside C# lambdas. http://www.ikriv.com/en/prog/info/dotnet/Lambdas.html