Operator Overloading - language feature

Example from Python, Cython:

# Python Program illustrate how  
# to overload an binary + operator 
  
class A: 
    def __init__(self, a): 
        self.a = a 
  
    # adding two objects  
    def __add__(self, o): 
        return self.a + o.a  
ob1 = A(1) 
ob2 = A(2) 
ob3 = A("Geeks") 
ob4 = A("For") 
  
print(ob1 + ob2) 
print(ob3 + ob4)

Example from C3:

fn int IntList.get(IntList* this, int idx) @operator([])
{
   return this.vals[idx];
}
...
IntList x = ...
foo(x[1]);

Example from Wolfram Language:

f[x_Integer] := x^2;
f[x_String] := "not a number";
f[x_Symbol] := x^2;

Example from Speedie:

str = "a" + "b"
array <~ str

Languages with Operator Overloading include Python, C++, PHP, Perl, Ruby, MATLAB, C#, R, Swift, Scala, Ada, Rust, Kotlin, Haskell, Lua, Clojure, Dart, F#, Eiffel, Smalltalk, D, Groovy, Visual Basic .NET, Io, Ceylon, Object Pascal, Cython, C3, Perl 6, Wolfram Language, Speedie, Seed7, FreeBASIC, Free Pascal, Real-Time Concurrent C

Languages without Operator Overloading include Java, JavaScript, C, Go, Pascal, TypeScript, Objective-C, Visual Basic, Modula-2, BASIC, progsbase, Jule, Pizza, Oracle Java, Deesel, Tick C, cooC, ADLIB, Static Typescript, Extended Pascal, Modula-2+

This question asks: Does the language allow operator overloading?

Read more about Operator Overloading on the web: 1. 2.

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