All Equality Solutions on Gang of Coders

Total of 70 Equality Solutions

Which equals operator (== vs ===) should be used in JavaScript comparisons?

Javascript Operators Equality Equality Operator Identity Operator

Why does comparing strings using either '==' or 'is' sometimes produce a different result?

Python String Comparison Identity Equality

How do I check for null values in JavaScript?

Javascript Null Compare Comparison Equality

What is the difference between == and equals() in Java?

Java Identity Equality Object Comparison

How do I compare strings in Java?

Java String Equality

Is there a difference between "==" and "is"?

Python Reference Equality Semantics

String comparison in Python: is vs. ==

Python String Comparison Equality

What's the difference between equal?, eql?, ===, and ==?

Ruby Comparison Operators Equality

Elegant ways to support equivalence ("equality") in Python classes

Python Equality Equivalence

Compare object instances for equality by their attributes

Python Equality

How do you test to see if a double is equal to NaN?

Java Double Equality Nan

Are == and != mutually dependent?

C++Operator Overloading Equality Equality Operator

Is False == 0 and True == 1 an implementation detail or is it guaranteed by the language?

Python Boolean Equality Language Specifications

Best practices for overriding isEqual: and hash

Objective C Equality

How do you compare structs for equality in C?

C Struct Equality

equals vs Arrays.equals in Java

Java Arrays Equality

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

C#.Net Equals Equality Iequatable

Why is x == (x = y) not the same as (x = y) == x?

Java Variable Assignment Equality Operator Precedence Jls

Python if not == vs if !=

Python If Statement Equality

In Objective-C, what is the equivalent of Java's "instanceof" keyword?

Objective C Types Casting Equality Downcast

What's wrong with using == to compare floats in Java?

Java Equality Floating Accuracy

Determine if 2 lists have the same elements, regardless of order?

Python List Equality Python 2.x

Difference between String#equals and String#contentEquals methods

Java String Equality

Comparing two collections for equality irrespective of the order of items in them

.Net Collections Comparison Equality

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

Scala Equality Scala Java-Interop

Why `null >= 0 && null <= 0` but not `null == 0`?

Javascript Null Comparison Equality

LINQ Select Distinct with Anonymous Types

C#Linq Distinct Anonymous Types Equality

jQuery object equality

Equality Jquery

bash string equality

Bash Equals Equality

Test for equality among all elements of a single numeric vector

R Vector Equality

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

Java Object Equals Hashcode Equality

Correct way to override Equals() and GetHashCode()

C#Equality Gethashcode

Why can a Python dict have multiple keys with the same hash?

Python Hash Dictionary Set Equality

Checking if two Dates have the same date info

Javascript Date Equality

Why does ("foo" === new String("foo")) evaluate to false in JavaScript?

Javascript Object Equality

What is the difference between eq?, eqv?, equal?, and = in Scheme?

Functional Programming Scheme Equality Equivalence

double equals vs is in python

Python Comparison Boolean Equals Equality

How do you test functions and closures for equality?

Closures Swift Equality

How to check if two vars have the same reference?

Javascript Equality

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

Python3 Determine if two dictionaries are equal

Python Python 3.x Dictionary Equality

How to compare Enums in TypeScript

Typescript Enums Compare Equality

php == vs === operator

Php Comparison Operators Equality

Determining Date Equality in Javascript

Javascript Date Equality

What's the difference between eq, eql, equal and equalp, in Common Lisp?

Syntax Common Lisp Equality

Why does 1234 == '1234 test' evaluate to true?

Php Equals Equality

Testing for equality between dictionaries in C#

C#Dictionary Equality

Comparing two structs using ==

C#Struct Equality

Test for equality to the default value

C#Generics Equality

Comparing NaN values for equality in Javascript

Javascript Comparison Equality Nan

(.1f+.2f==.3f) != (.1f+.2f).Equals(.3f) Why?

C#Equality Floating Accuracy

Why do these two comparisons have different results?

C#.Net Equality

How to test two dateTimes for being the same date?

C#Datetime Equality

JavaScript Date Comparisons Don't Equal

Javascript Date Equality

Can I use ' == ' to compare two vectors. I tried it and seems to be working fine. But I don't know whether it will work in more complex situations

C++Vector Operator Overloading Equality

Comparing two List<string> for equality

C#.Net Collections Comparison Equality

What problem does IStructuralEquatable and IStructuralComparable solve?

.Net Equality Icomparable Iequalitycomparer

How to test for (ActiveRecord) object equality

Ruby on-Rails Ruby Activerecord Identity Equality

Sets, Functors and Eq confusion

Scala Haskell Equality Functor

Comparing two string arrays in C#

C#.Net String Linq Equality

Pandas DataFrames with NaNs equality comparison

Python Pandas Equality Nan

Comparing arrays for equality in C++

C++Arrays Comparison Equality

Are objects with the same id always equal when comparing them with ==?

Python Equality

Compare if two dataframe objects in R are equal?

R Dataframe Compare Equality

Why does the "is" keyword have a different behavior when there is a dot in the string?

Python Identity Equality

How do I check if two variables reference the same object in Python?

Python Equality

What's the right way to implement equality in ruby

Testing anonymous function equality with Jest

Javascript node.js Unit Testing Jestjs Equality

How to check if two Expression<Func<T, bool>> are the same

C#Expression Equality

Why does new String('hello') === new String('hello') evaluate to False?

Javascript Equality Comparison Operators Equality Operator Identity Operator