Browse questions answered by Jon Skeet

C# Dynamic List to Static List

From the documentation of the Event Log Class the EventLogEntryCollection is a dynamic list of event log entries. It recommends that the Count property is used directly instead of...

Is there a way to store this list statically so the count does not change? It sounds like you want something like: List<EventLogEntry> entries = eventLogEntries.Cast<EventLogEntry>().ToList(); That will fetch all the... more 5/21/2014 3:33:18 PM

Cannot Resolve Method when using generics

I am trying to implment a tree for my project. This tree will contain nodes which are different board states after some move. Right now my project is structured like so: ...

This is the problem: public static class Node<Board> That's declaring a generic class called Node, and Board is a type parameter. Within Node, the identifier Board refers to the type parameter called Board, not the type Board... more 5/21/2014 3:13:34 PM

Java charAt getting wrong character

I am trying to make an algorithm that will do the following: 64 797 7 === 79 that will take 7, multiply it by 7, and then write the last digit of the answer down and then...

I strongly suspect that the problem is the type of tens. You haven't shown this in your code, but I suspect it's int. So this line: tens = (upper*7+"").charAt(0); takes the first character from a string, and then stores it in an int.... more 5/21/2014 3:08:00 PM

Check if object is null without using ==

In my program, I have objects derived from Dictionary. I need to check if 2 objects are equal, so I made an overload operator ==. But at a later point, I need to check if a...

In my program, I have objects derived from Dictionary. I would strongly reconsider deriving from Dictionary in the first place. That's very rarely a good idea. Favour composition over inheritance in general, and think very carefully... more 5/21/2014 2:39:56 PM

What is the java equivalent of VBA's "With" statement

In VB / VBA you can do something like this: With person .Name = "John" .Age = 32 End With But in java I can't figure out how or if that functionality exists. Everything...

If it doesn't exists, is there at least some methodology to cut down on the repetition? Nope, not really - not unless you control the type. If you do control the type, you can make the set methods return this, allowing you to chain... more 5/21/2014 1:46:09 PM

LINQ lambda expression, finding a child object where property is == X

Need help with a LINQ lambda expression in C#. So let me explain the structure of my object. RootObject is a collection(custom class with multiple properties) that has many...

It sounds like you want something like: // Parse the target ID *once* rather than all the time... var targetId = int.Parse(IDToFind); var playerRound = RootObject.SelectMany(i => i.Items) .SelectMany(x =>... more 5/21/2014 1:04:42 PM

Finding the list of common objects between two lists

I have list of objects of a class for example: class MyClass { string id, string name, string lastname } so for example: List<MyClass> myClassList; and also I...

So you're looking to find all the elements in myClassList where myIdList contains the ID? That suggests: var query = myClassList.Where(c => myIdList.Contains(c.id)); Note that if you could use a HashSet<string> instead of a... more 5/21/2014 12:31:05 PM

Found weird behavior with Joda API

I started looking at joda API for handling timezone related issues for my web application. I found very weird behavior while doing so. I hope there must be some workaround. here...

Given that you want hours and minutes (an Hours object can only hold an integer number of hours) you probably want: Period period = new Period(utcDateTime.toLocalDateTime(), currentDateTime.toLocalDateTime(), ... more 5/21/2014 12:04:19 PM

Getting error while using a throws clause with an overriding method in java?

I am getting a error when i am using a throw clause with the method demo().And i want to know that what are the limitations of using throws in inheritance. The error is:...

ClassNotFoundException is a checked exception - and you can't declare that a method override will throw any checked exceptions that the method it's overriding doesn't declare. From section 8.4.8.3 of the JLS: A method that overrides... more 5/21/2014 10:14:23 AM

Converted word document (from Windows 1252 to UTF 8) not displaying characters correctly

I have a Windows-1252 word document that I want to convert to UTF-8. I need to do this to correctly convert the doc file to a pdf. This is how I currently do it: Path source =...

I have a Windows-1252 word document That's not a text file. Word documents are basically binary data - open it up with a plain text editor and you'll see all kinds of gibberish. You may see some text in there as well, but basically... more 5/21/2014 9:46:49 AM