I’m getting the error: Extension methods must be defined in a non-generic static class On the line: public class LinqHelper Here is the helper class, based on Mark Gavells code. I’m really confused as to what this error means as I am sure it was working fine when I left it on Friday! using System; … Read more
I’m having another of these “Could not load file or assembly or one of its dependencies” problems. Additional information: Could not load file or assembly ‘Microsoft.Practices.Unity, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35’ or one of its dependencies. The located assembly’s manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) I have no idea what is … Read more
I’m trying to install a new Python environment on my shared hosting. I follow the steps written in this post: mkdir ~/src wget http://www.python.org/ftp/python/2.7.1/Python-2.7.1.tgz tar -zxvf Python-2.7.1.tar.gz cd Python-2.7.1 mkdir ~/.localpython ./configure –prefix=/home/<user>/.localpython make make install After coming to the ./configure –prefix=/home/<user>/.localpython command, I get the following output: checking for –enable-universalsdk… no checking for –with-universal-archs… … Read more
I’ve written this test code: class MyProgram { int count = 0; public static void main(String[] args) { System.out.println(count); } } But it gives the following error: Main.java:6: error: non-static variable count cannot be referenced from a static context System.out.println(count); ^ How do I get my methods to recognize my class variables? 15 Answers 15
I’m getting an error Variable is not assignable (missing __block type specifier) on the line aPerson = participant;. How can I make sure the block can access the aPerson variable and the aPerson variable can be returned? Person *aPerson = nil; [participants enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) { Person *participant = (Person*)obj; if ([participant.gender … Read more
I often find myself in a situation where I am facing multiple compilation/linker errors in a C++ project due to some bad design decisions (made by someone else 🙂 ) which lead to circular dependencies between C++ classes in different header files (can happen also in the same file). But fortunately(?) this doesn’t happen often … Read more
Locked. This question and its answers are locked because the question is off-topic but has historical significance. It is not currently accepting new answers or interactions. I am having some difficulty compiling a C++ program that I’ve written. This program is very simple and, to the best of my knowledge, conforms to all the rules … Read more
Please explain the following about “Cannot find symbol”, “Cannot resolve symbol” or “Symbol not found” errors (in Java): What do they mean? What things can cause them? How does the programmer go about fixing them? This question is designed to seed a comprehensive Q&A about these common compilation errors in Java. 17 s 17 0. … Read more
I am trying to run some unit tests in a C# Windows Forms application (Visual Studio 2005), and I get the following error: System.IO.FileLoadException: Could not load file or assembly ‘Utility, Version=1.2.0.200, Culture=neutral, PublicKeyToken=764d581291d764f7’ or one of its dependencies. The located assembly’s manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)** at … Read more
I just downloaded and installed the new Android SDK. I wanted to create a simple application to test drive it. The wizard created this code: package eu.mauriziopz.gps; import android.app.Activity; import android.os.Bundle; public class ggps extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } … Read more
