Browse questions answered by Jon Skeet

Nested classes lists LINQ

I have the following classes: public class SerializedDelegate { public List<GOEntry> goEntries = new List<GOEntry>(); } public class GOEntry { public string...

It sounds like you want something like: var lines = from goEntry in sd.goEntries from mbEntry in goEntry.mbEnties from methodEntry in mbEntry.methodsEntries select string.Format("{0}: {1}.{2}", ... more 4/4/2014 3:21:56 PM

DateTime.ToString() format error

I am using the following format to convert a DateTime to a string setting.SettingValue = dt.ToString( "yyyy-MM-dd HH:mm:ss.fff" ); however the value is not as expected. The...

You haven't specified a format provider, so it's using the one from the current culture. If you always want to use :, you should specify an appropriate provider, e.g.: setting.SettingValue = dt.ToString("yyyy-MM-dd HH:mm:ss.fff", ... more 4/4/2014 1:18:53 PM

How can a method without the out or ref change a variable outside itself? C#

How is it possible to change the values of an array a from the inside of SumElemtnts method? Is it because it's a static method? Because the method returns only the variable sum...

You're not changing the value of the variable within SumElements - that still refers to the same array that it did before. Note how there's no assignment to a within the SumElements method. Instead, you're changing the contents of the... more 4/4/2014 12:14:02 PM

Switch between types including interfaces

I have a set of overloads for a get function. Each one have a different input type but basically the same signature schema (as follow): string GetPropertyValue(int propId, string...

You can't look the type up in the dictionary that way. You'll have to loop through the key-value pairs: Type targetType = defaultValue.GetType(); foreach (var pair in dictionary) { if (pair.Key.IsAssignableFrom(targetType)) { ... more 4/4/2014 11:24:43 AM

Unit test Distinct with keyselector and comparer

How would I go about unit testing this piece of LINQ code? public static IEnumerable<T> Distinct<T, TKey>(this IEnumerable<T> items, Func<T, TKey>...

This code is trying to do something similar to MoreLINQ's DistinctBy method, but not as well. Fundamentally, the idea is that given a collection of items, you want to find a distinct set of items, but specifically testing for distinctness... more 4/4/2014 9:06:25 AM

how java inner class objects exists in the memory heap?

class Outer { int o = 10; class Inner { int i = 20; } } public class Demo { public static void main(String args[]) { Outer o = new Outer(); ...

Basically the compiler implicitly creates a constructor taking a reference to the outer class, which is stored in a hidden field. So your code is somewhat like this: class Outer { int o = 10; static class Inner { private... more 4/4/2014 8:47:41 AM

How to get the ASCII value of a string

Suppose there is a string: String str="Hello"; HOw can i get the ASCII value of that above mentioned string?

Given your comment, it sounds like all you need is: char[] chars = str.ToCharArray(); Array.Sort(chars); A char value in .NET is actually a UTF-16 code unit, but for all ASCII characters, the UTF-16 code unit value is the same as the... more 4/4/2014 6:52:05 AM