Top "Equality" questions

Why is [] !== [] in JavaScript?

Why is [] !== [] in JavaScript? I read through https://developer.mozilla.org/en-US/docs/Web/JavaScript/Equality_comparisons_and_sameness but …

javascript equality equality-operator

Comparing boxed value types

Today I stumbled upon an interesting bug I wrote. I have a set of properties which can be set through …

c# equality boxing unboxing

Why == operator and equals() behave differently for values of AnyVal in Scala

In the scaladoc of scala.Any, the operator == (or, method ==) is explained: The expression x == that is equivalent to if (…

scala equals equality primitive

What problem does IStructuralEquatable and IStructuralComparable solve?

I've noticed these two interfaces, and several associated classes, have been added in .NET 4. They seem a bit superfluous to …

.net equality icomparable iequalitycomparer

isEqual doesn't always work for NSIndexPath? What can I use in its place?

I've got some code that relies on comparing two NSIndexPaths and executing different code based on their equality or lack …

objective-c equality iphone-sdk-3.2 nsindexpath

Set "in" operator: uses equality or identity?

class A(object): def __cmp__(self): print '__cmp__' return object.__cmp__(self) def __eq__(self, rhs): print '__…

python set identity operator-keyword equality

How do I check the equality of three values elegantly?

Say I have values a, b and c. I want to find out if they are equal. If I do …

go syntax equality readability convention

Will the var members in case class affect case class's equality?

I have made heavy use of case classes in my code, replying on the underlying equality definitions of case class …

scala equality case-class algebraic-data-types

Can I overload an == operator on an Interface?

I have an interface like this: public interface IFoo { int A {get;} int B {get;} } and I have multiple classes …

c# .net interface equality iequatable