[Androider]

Nowadays you can just stick a class property anywhere in your React component:

   handleSomething = (params) => {
     ...
   };

and the use it in your render function like this without any binding:

  <Foo onSomething={this.handleSomething}/>

[miroslavpopovic]

Yes, class properties are the way to go.

[nbclark]

Good suggestion - Thank you