I would call Directory.CreateDirectory(@”C:\dir0\dir1\dir2\dir3\dir4\”). Contrary to popular belief, Directory.CreateDirectory will automatically create whichever parent directories do not exist. In MSDN’s words, Creates all directories and subdirectories as specified by path. If the entire path already exists, it will do nothing. (It won’t throw an exception)
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
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
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]; }
I can only tell how the Mono Project does this. The theorem is quite simple, though it gives a code mess. They first compile System.Configuration.dll, without the part needing the reference to System.Xml.dll. After this, they compile System.Xml.dll the normal way. Now comes the magic. They recompile System.configuration.dll, with the part needing the reference to … Read more
There’s no such thing as an empty char. The closest you can get is ‘\0′, the Unicode “null” character. Given that you can embed that within string literals or express it on its own very easily, why would you want a separate field for it? Equally, the “it’s easy to confuse “” and ” “” … Read more
Indeed, it is for performance reasons. The BCL team did a lot of research on this point before deciding to go with what you rightly call out as a suspicious and dangerous practice: the use of a mutable value type. You ask why this doesn’t cause boxing. It’s because the C# compiler does not generate … 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