jwgoedert

/*each takes an array and a callback function which passes
(value, index, collection) as its arguments.  Each works on
both arrays and objects and does not work with a return within
the body.
*/
_.each = function each(collection, myFunction){
    if(_.typeOf(collection) === 'array'){
        for(var i = 0; i < collection.length; i++){
             myFunction(collection[i], i, collection);
        }

jwgoedert

_.last = function last(arr, number){
   var newArr = [];
    if(!Array.isArray(arr)){
        return [];
    }else if(isNaN(number) || number === undefined ){
        return arr[arr.length - 1];   
    }else if(number < 0){ 
        return newArr;
    }else if(number > arr.length){
        return arr;

jwgoedert

//first takes an array and a number and returns that amount
//of values from the beginning of an array in a new array.

_.first = function first(arr, number){
    var newArr = [];
    if(!Array.isArray(arr)){
        return [];
    }else if(isNaN(number) || number === undefined ){
        return arr[0];   
    }else if(number < 0){ 

jwgoedert

//takes any value and returns that value's type as a string
_.typeOf = function typeOf (anything){
   if(anything === null) {
        return anything = "null";
   }else if(Array.isArray(anything)){
       return "array";
   }
    return typeof anything;    
}
//typeOf with them arrows!!

jwgoedert

//identity- takes any value and returns that exact value.  
_.identity = function identity(anything) {
    return anything;
};
//using arrow fun... so clean
identity = (val) => val;

jwgoedert

/*Variables-our friends in the age of repetition
Variables are placeholders which allow programs to easily recall
information or actions, alter them, and implement complex operations 
in a clear concise manner. They can be thought of as containers for
holding values of any data type including numbers, strings, booleans, 
and even functions or objects.  
*/

/*declaring a variable called num1 with "var" keyword
this simply creates a place in memory which can then be assigned to

jwgoedert

//Functions: programs within programs.
//a dream within a dream
//two phases of functions are declaration and invocation(or calling)
// declaration (anonymous function being declared as variable)    
//
        var fullName = function(first, middle, last){
        var person = {
          FirstName: first,
          MiddleName: middle,
          Last: last

jwgoedert

// Loops: while, for, for in.
// Making your way through the world today.
// while loops address a condition and execute the code within {} as
// long as that statement holds true
"use strict";

var x = 0;
while (x === 0) {}
//console.log("we're ready for something");

jwgoedert

//Functions: programs within programs.
//a dream within a dream
      var fullName = function(first, middle, last){
        var person = {
          FirstName: first,
          MiddleName: middle,
          Last: last
        }
        var newName = first + " " + middle + " " +last;
        console.log(newName);

jwgoedert

// Loops: while, for, for in.
// Making your way through the world today.
// while loops address a condition and execute the code within {} as
// long as that statement holds true
"use strict";

var x = 0;
while (x === 0) {
  console.log("we're ready for something");
}