How to use the different equality operator
665
Which equals operator (== vs ===) should be used in JavaScript comparisons?
149631
Math-like chaining of the comparison operator - as in, "if ( (5<j<=1) )"
158001
Dynamic Comparison Operators in PHP
34939
Ternary operator
39405
Symmetric difference = Ø
54156
Elegant ways to support equivalence ("equality") in Python classes
110074
What is the difference between == and equals() in Java?
70078
Java two equal signs in one statement?
37369
How do I check if two logical expressions are equivalent?
73430
C# .Equals(), .ReferenceEquals() and == operator
93974
Comparing arrays for equality in C++
38898
How to compare the strings using < (Greater than symbol)
12242
How does string equality work in JavaScript?
71813
Compare equality between two objects in NUnit
25019
How do comparison operators  work with a function as an operand?
44943
The 3 different equals
148559
Using the correct, or preferable, not equal operator in MySQL