currying.html

1. Bind - function curring usign bind method create a multiple methiods.

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2. Closer - You can use preset values x in inner second function
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https://www.youtube.com/watch?v=75W8UPQ5l7k

3. Call, Apply and Bind functions

Call :- function borrowing



<script type="text/javascript">
  // 1. Bind - function curring usign bind method create a multiple methiods.

  // 2. Closer

let multiply = function (x,y){
  console.log(x*y);
}

//This function same like bealow single line function
/*let multiplyByTwo = function(Y){
  let x = 2;
  console.log(x*y);
}

let multiplyByTwo = multiply.bind(this,2);
*/


/*
  in argument last values is for Y
  let multiplyByTwo = multiply.bind(this,2,3);  
  or
  multiplyByTwo(2,3);
*/
let multiplyByTwo = multiply.bind(this,2);
multiplyByTwo(3);

let multiplyByThree = multiply.bind(this,3);
multiplyByThree(5);


/*
  Closer
  You can use preset values x in second function
*/

let multiply1 = function (x){
  return function(y){
    console.log(x*y);
  }
}

// Remove a bind function and pass direct argument
let multiplyByTwo1 = multiply1(2);
multiplyByTwo1(3);



//Call fucntion : - invoke a fucntion passing directily argument by comma sperated
let name = {
  firstname : "ravi",
  lastname : "kumar",
  printFullName : function(hometown, state){
    console.log(this.firstname + " " +this.lastname + " from " + hometown + " " + state);
  }
}
name.printFullName("Ahmedabad","Guj");

let name2 = {
  firstname : "Rv",
  lastname : "Patel",
}
//fucntion borrowing
name.printFullName.call(name2,"Mumbai","Mah");

//Apply method => pass value as a array list []
name.printFullName.apply(name2,["A","B"]);

//Bind methord : does not invoke direct but fucntion retun inoke later

let printmyname = name.printFullName.bind(name2,"Mumbai","Mah");
//return a full fucntion
console.log(printmyname);
printmyname();

</script>