how to pass argument to multiple lambda expressions in javascript?

December 25, 2021

can i give 2 argumens if there is multiple lambda funcionts in javascripts?
i have the following code

var twice = (x) => {
  return x *x;
}

var lambda = (b) => { 
  (a) =>{
    return b(b(a));
  }
}; 


console.log(lambda(twice, 5));

this wont work, and
I could use

  var lambda = (b,a) => { 
        return b(b(a));
    };

and will work, but can I use separate lambda expression and give them arguments ?

>Solution :

Yes, You would take advantage of closures so that the inner function returned from invoking lambda() can keep a reference to its surrounding lexical environment.

You then call said inner function with the desired value lambda(twice)(5), in this case, 5.

var twice = (x) => {
  return x *x;
}

var lambda = (b) => { 
  return (a) => {
    return b(b(a));
  }
}; 


console.log( lambda(twice)(5) ); // -> 625