-
Notifications
You must be signed in to change notification settings - Fork 0
/
map.js
44 lines (35 loc) · 1 KB
/
map.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
const words = ["ground", "control", "to", "major", "tom"];
const map = function(array, callback) {
// temporary code:
// console.log('array: ', array);
// console.log('callback: ', callback);
const results = [];
for (let item of array) {
// console.log('item BEFORE: ', item);
// console.log('item AFTER: ', callback(item));
// console.log('---');
results.push(callback(item));
}
return results;
};
const results1 = map(words, word => word[0]);
console.log(results1);
const assertArraysEqual = function(array1, array2) {
if (eqArrays(array1, array2)) {
console.log(`Assertion Passed: ${array1} === ${array2}`);
} else {
console.log(`Assertion Failed: ${array1} !== ${array2}`);
}
};
const eqArrays = function(array1, array2) {
if (array1.length !== array2.length) {
return false;
}
for (let i = 0; i < array1.length; i++) {
if (array1[i] !== array2[i]) {
return false;
}
}
return true;
};
assertArraysEqual([ 'g', 'c', 't', 'm', 't' ], results1);