Since the latest Rails 3 release is not auto-loading modules and classes from lib anymore, what would be the best way to load them? From github: A few changes were done in this commit: Do not autoload code in *lib* for applications (now you need to explicitly require them). This makes an application behave closer … Read more
This question already has answers here: LINQ: Distinct values (7 answers) Closed 8 years ago. I have a class list of class public class LinqTest { public int id { get; set; } public string value { get; set; } } List<LinqTest> myList = new List<LinqTest>(); myList.Add(new LinqTest() { id = 1, value = “a” … Read more
There’s a good discussion of Generics and what they really do behind the scenes over at this question, so we all know that Vector<int[]> is a vector of integer arrays, and HashTable<String, Person> is a table of whose keys are strings and values Persons. However, what stumps me is the usage of Class<>. The java … Read more
How would you find a particular class name inside lots of jar files? (Looking for the actual class name, not the classes that reference it.) 35 Answers 35 Unix On Linux, other Unix variants, Git Bash on Windows, or Cygwin, use the jar (or unzip -v), grep, and find commands. The following lists all class … Read more
I know that Python does not support method overloading, but I’ve run into a problem that I can’t seem to solve in a nice Pythonic way. I am making a game where a character needs to shoot a variety of bullets, but how do I write different functions for creating these bullets? For example suppose … Read more
For example why can you do: int n = 9; But not: Integer n = 9; And you can do: Integer.parseInt(“1”); But not: int.parseInt(“1”); 11 Answers 11
I came across this strange code snippet which compiles fine: class Car { public: int speed; }; int main() { int Car::*pSpeed = &Car::speed; return 0; } Why does C++ have this pointer to a non-static data member of a class? What is the use of this strange pointer in real code? 18 Answers 18
Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 8 years ago. Improve this question I’m used to the Java model where you can have one public class per file. Python … Read more
Let’s say I have the following class X where I want to return access to an internal member: class Z { // details }; class X { std::vector<Z> vecZ; public: Z& Z(size_t index) { // massive amounts of code for validating index Z& ret = vecZ[index]; // even more code for determining that the Z … Read more
How do you create a static class in C++? I should be able to do something like: cout << “bit 5 is ” << BitParser::getBitAt(buffer, 5) << endl; Assuming I created the BitParser class. What would the BitParser class definition look like? 15 Answers 15
