Tuples are available since .NET4.0 and support generics: Tuple<string, int> t = new Tuple<string, int>(“Hello”, 4); In previous versions you can use System.Collections.Generic.KeyValuePair<K, V> or a solution like the following: public class Pair<T, U> { public Pair() { } public Pair(T first, U second) { this.First = first; this.Second = second; } public T First … Read more
The important part is not what happens IN this class, but what happens, when another class uses (and links to) it. Let me explain with another example: Assume you have a Assembly1.dll containing a class declaring public static const int SOME_ERROR_CODE=0x10; public static readonly int SOME_OTHER_ERROR_CODE=0x20; and another class consuming this e.g. public int TryFoo() … Read more
As you’ve found out yourself, it’s a documented feature. It’s described in the documentation of TimeSpan: Parameters value Type: System.Double A number of seconds, accurate to the nearest millisecond. The reason for this is probably because a double is not that accurate at all. It is always a good idea to do some rounding when … Read more
Although nobody can really tell you why there is no SortedList<T>, it is possible to discuss why SortedList takes a key and a value. A dictionary maps keys to values. The typical ways to do this are with a binary tree, a hash table, and a list (array), though hash tables are most common because … Read more
This has been for a long time and continues to be confusing. I have seen such messaging myself but as of right now, it appears System.Net.Http is the correct choice, at least for .NET on the Windows platform and has no external dependencies. For .NET Core, I have used Microsoft.Net.Http although it does require Microsoft.BCL. … Read more
ManualResetEvent and ManualResetEventSlim both are designed so that they remained signaled after calling. This is typically for a very different scenario than AutoResetEvent. AutoResetEvent immediately returns to the unsignaled state after usage, which is typically used for a different set of scenarios. From AutoResetEvents documentation: Typically, you use this class when threads need exclusive access … Read more
This should work: byte ConvertToByte(BitArray bits) { if (bits.Count != 8) { throw new ArgumentException(“bits”); } byte[] bytes = new byte[1]; bits.CopyTo(bytes, 0); return bytes[0]; }
private int getIntFromBitArray(BitArray bitArray) { if (bitArray.Length > 32) throw new ArgumentException(“Argument length shall be at most 32 bits.”); int[] array = new int[1]; bitArray.CopyTo(array, 0); return array[0]; }
Because List<T> implements all of the necessary methods/properties/etc. (and then some) of IReadOnlyList<T>. An interface is a contract that says “I can do at least these things.” The documentation for IReadOnlyList<T> says it represents a read-only collection of elements. That’s right. There are no mutator methods in that interface. That’s what read-only means, right? IReadOnlyList<T> … Read more
Well, for one thing it’s not clear whether you expect this to be insertion-order or key-order. For example, what would you expect the result to be if you wrote: var test = new Dictionary<int, string>(); test.Add(3, “three”); test.Add(2, “two”); test.Add(1, “one”); test.Add(0, “zero”); Console.WriteLine(test.ElementAt(0).Value); Would you expect “three” or “zero”? As it happens, I think … Read more