1
// Implicit (bad)
2
function calculateSalary(a, b) {
3
  return a + b + 10;  // a?? b?? WTF is 10?
4
}

1
// Explicit (good)
2
function calculateSalary(cash, equity) {
3
  const bonus = 10; // Explicit bonus variable
4
  return cash + equity + bonus;
5
}

1
// Implicit (bad)
2
function grantAccess(user) {
3
  if (user.role === 'admin') {
4
    return ['read', 'write', 'delete'];  // Full access
5
  }
6

7
  if (user.role === 'editor') {
8
    return ['read', 'write'];  // Editors can't delete
9
  }
10

11
  if (user.role === 'viewer') {
12
    return ['read'];  // View-only access
13
  }
14

15
  // Implicit fallback
16
  return ['none'];  // WTF is 'none'?
17
}
18

19
function showAccessControls(user) {
20
  const permissions = grantAccess(user);
21

22
  if (permissions.includes('read')) {
23
    console.log("User has read access.");
24
  }
25
  if (permissions.includes('write')) {
26
    console.log("User has write access.");
27
  }
28
  if (permissions.includes('delete')) {
29
    console.log("User has delete access.");
30
  }
31
}
32

33
// Example usage
34
const user1 = { name: "Alice", role: "admin" };
35
const user2 = { name: "Bob", role: "viewer" };
36
const user3 = { name: "Charlie", role: "guest" };  // Implicit 'none' fallback
37

38
showAccessControls(user1);  // Has all access
39
showAccessControls(user2);  // Read-only access
40
showAccessControls(user3);  // No access, but why?

1
// Explicit (good)
2
const ROLE_PERMISSIONS = {
3
  admin: ['read', 'write', 'delete'],
4
  editor: ['read', 'write'],
5
  viewer: ['read'],
6
  guest: []  // Explicitly defining guest permissions
7
};
8

9
function grantAccess(user) {
10
  const permissions = ROLE_PERMISSIONS[user.role] || ROLE_PERMISSIONS['guest'];
11
  return permissions;
12
}
13

14
function showAccessControls(user) {
15
  const permissions = grantAccess(user);
16

17
  if (permissions.includes('read')) {
18
    console.log(`${user.name} has read access.`);
19
  }
20
  if (permissions.includes('write')) {
21
    console.log(`${user.name} has write access.`);
22
  }
23
  if (permissions.includes('delete')) {
24
    console.log(`${user.name} has delete access.`);
25
  }
26
  if (permissions.length === 0) {
27
    console.log(`${user.name} has no access.`);
28
  }
29
}
30

31
// Example usage
32
const user1 = { name: 'Alice', role: 'admin' };
33
const user2 = { name: 'Bob', role: 'viewer' };
34
const user3 = { name: 'Charlie', role: 'guest' };
35

36
showAccessControls(user1);  // Alice has read, write, and delete access.
37
showAccessControls(user2);  // Bob has read access.
38
showAccessControls(user3);  // Charlie has no access.