Top "Equality" questions

What's the difference between IEquatable and just overriding Object.Equals()?

I want my Food class to be able to test whenever it is equal to another instance of Food. I …

c# .net equals equality iequatable

How default .equals and .hashCode will work for my classes?

Say I have my own class public class MyObj { /* ... */ } It has some attributes and methods. It DOES NOT implement equals, …

java object equals hashcode equality

Equality comparison between multiple variables

I've a situation where I need to check whether multiple variables are having same data such as var x=1; var …

c# comparison operators equality

C# .Equals(), .ReferenceEquals() and == operator

My understanding of these three was: .Equals() tests for data equality (for the lack of a better description). .Equals() can …

c# equality

Java: How to test on array equality?

Why is the following code printing "Different."? boolean[][] a = { {false,true}, {true,false} }; boolean[][] b = { {false,true}, {true,false} }; if (…

java arrays equality

Comparing two string arrays in C#

Say we have 5 string arrays as such: string[] a = {"The","Big", "Ant"}; string[] b = {"Big","Ant","Ran"}; string[] c = {"The","…

c# .net string linq equality

Difference between String#equals and String#contentEquals methods

What is the difference between the String#equals method and the String#contentEquals method?

java string equality

How to compare Enums in TypeScript

In TypeScript, I want to compare two variables containing enum values. Here's my minimal code example: enum E { A, B } …

typescript enums compare equality

What's the difference between == and .equals in Scala?

What is the difference between == and .equals() in Scala, and when to use which? Is the implementation same as in …

scala equality scala-java-interop

JavaScript Date Comparisons Don't Equal

I've tried searching for people with similar questions, but haven't found anything. I have two dates in JavaScript, both set …

javascript date equality