Browse questions answered by Jon Skeet

Adding second condition in LINQ JOIN,

I have looked around and found a few posts on adding a second condition to a JOIN clause but they are always instances of having one column link to another but in my instance I...

The condition tch2.WeekEndingDate = @PayPeriod doesn't feel like part of the join to me - it's not comparing data in two different rows. It feels like it should be part of what you're joining on, leading to: join leftth2 in... more 9/27/2016 3:39:11 PM

Android LEB128 type size

I'm confused about LEB128 or Little Endian Base 128 format. In the AOSP source code Leb128.java, its read function's return type whether signed or unsigned is int. I know the the...

Each byte of data in LEB only accounts for 7 bits in the actual output - the remaining bit is used to indicate whether or not it's the end. From Wikipedia: To encode an unsigned number using unsigned LEB128 first represent the number... more 9/27/2016 12:54:18 PM

Java: NoSuchMethodException with reflection when method clearly exists

I've been trying to use Reflection in Java, Here's my code: String charsetName = "UTF-16LE"; java.nio.charset.CharsetDecoder cd =...

You're calling getDeclaredMethod on the actual type of cd, whereas it's declared in CharsetDecoder. That can't be the actual type of cd given that it's an abstract class. Just change this: Class c = cd.getClass(); to Class c =... more 9/26/2016 12:35:49 PM

Is it possible to read ASCII control characters in XML?

I am newly on XML and I need to know, Is it possible to read ASCII control characters in XML? or Is it possible to replace ASCII control characters in XML?

XML 1.1 allows for all Unicode characters other than U+0000, but XML 1.0 has a restricted character set. From section 2.2 of the 5th edition: Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF] That's the... more 9/26/2016 9:17:27 AM

Why does this download the large file, but hang the UI thread?

static async void DownloadData(TextBox textboxURL, TextBlock outputView) { try { using (var client = new HttpClient()) { client.BaseAddress =...

You're using the synchronous Stream.CopyTo method here: httpStream.CopyTo(fileStream); I think you just want: await httpStream.CopyToAsync(fileStream); However, you should also remove the StreamReader part - you're not using the... more 9/26/2016 7:21:53 AM

What will happen to the items inside a shallow cloned list if the original list was cleared

My initial intention is to send list asynchronously through a TCP Stream. But directly after passing the list to the asynchronous thread I need to clear it to fill it again with...

No, the existing items aren't affected, other than being potentially eligible for garbage collection. This is just like setting a variable to null, effectively: MyDataObject x = new MyDataObject(); // And populate MyDataObject y = x; //... more 9/26/2016 5:54:24 AM

Retrieving all records with Lambda StartsWith()

I have the following ActionResult and retrieve records that starting with "query" parameter's value. However, when quesry value is empty or null, the methods returns no record...

Well, two options: Conditionally apply the Where clause: IQuerable<StudentModel> students = repository.Students.Select(m => new StudentViewModel { Id = m.Id, Name = m.Name }); if (!string.IsNullOrEmpty(query)) { ... more 9/25/2016 5:12:55 PM

How convert list from one to another type using lameda Expression java

I have a list of Entities Employee(Class) which has fields empid, empname, emprole.salary List<Employee>= getting from database I want to convert it into model list...

Assuming you've got a suitable constructor, it should be as simple as: List<Person> people = employees .stream() // View the list as a stream .map(e -> new Person(e.getId(), e.getName(), e.getRole().getSalary())) ... more 9/25/2016 7:48:11 AM

Parse class variables?

I'm pretty new to c# language as I just started to use it several weeks ago, and I came across one simple problem with classes.I was sitting for good 30 minutes looking for...

I think you're confused about what your methods are doing, and when you're initializing objects. I suspect you actually want to do something like this: class Program { static void Main(string[] args) { // Ask the user for... more 9/23/2016 1:40:57 PM

Google Calendar API and shared hosting issue

I'm trying to use a public Google calendar in a webpage that will need editing functionalities. To that effect, I created the calendar and made it public. I then created a Google...

One simple option which avoids needing to worry about file locations is to embed the certificate within your assembly. In Visual Studio, right-click on the file and show its properties. Under Build Action, pick "Embedded resource". You... more 9/23/2016 12:59:57 PM