github.com/l3x/learn-fp-go@v0.0.0-20171228022418-7639825d0b71/4-purely-functional/ch11-category-theory/03_lambda/lambda.js (about)

     1  var add = function (a) {
     2      return function (b) {
     3          return a + b;
     4      };
     5  };
     6  add2 = add(2);
     7  
     8  add2(1) == 6;
     9  
    10  const add = a =;> b =;> a + b;
    11  add2 = add(2);