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              // Read full post at: https://jchiatt.com/worklog-062018-new-javascript-array-methods

// Data for methods below:
const people = ["Bob", "Alice", "Joe", "Jack", "Maria"];

/* 
.some() tests whether at least one element in the array passes the test you provide as a callback function.

Note that it immediately returns as soon as it finds the first true value, so it has no idea if there are multiple elements within the array that would pass true. It only cares that there's at least one.
*/

const startsWithJ = function(element) {
  // checks whether an element starts with the letter "J"
  return element[0] === "J";
};

console.log(people.some(startsWithJ));
// expected output: true

/*
.includes() checks whether the array includes a specific value you pass in, returning true or false.
*/

console.log(people.includes("Alice"))
// expected output: true


/*
.from() creates a new array from an array-like or iterable object. Note that it only creates a shallow copy, so nested values aren't copied. You can also pass in an optional map function to call on every element of the array as it is added.
*/

console.log(Array.from(people, person => person + " Smith"))
// expected output: ["Bob Smith", "Alice Smith", "Joe Smith", "Jack Smith", "Maria Smith"]
            
          
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