SISMEMBER for membership check in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if 'user1' is a member of the set 'online_users'.

Redis

SISMEMBER online_users [1]

Drag options to blanks, or click blank then click option'

Auser1

Buser2

Cadmin

Dguest

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong member name.

Forgetting to specify the member argument.

The command SISMEMBER online_users user1 checks if 'user1' is in the set 'online_users'.

2fill in blank

medium

Complete the code to check if 'admin' is a member of the set 'user_roles'.

Redis

SISMEMBER [1] admin

Drag options to blanks, or click blank then click option'

Auser_roles

Bactive_sessions

Conline_users

Dguest_list

Attempts:

3 left

💡 Hint

Common Mistakes

Using a set name that does not contain roles.

Swapping the order of arguments.

The command SISMEMBER user_roles admin checks if 'admin' is in the set 'user_roles'.

3fill in blank

hard

Fix the error in the command to check if 'guest' is a member of 'guest_list'.

Redis

SISMEMBER guest_list [1]

Drag options to blanks, or click blank then click option'

Aguest_list

Bguest_list guest

Cguest

Dlist_guest

Attempts:

3 left

💡 Hint

Common Mistakes

Providing both set and member as one argument.

Using the set name instead of the member.

The correct command is SISMEMBER guest_list guest. The second argument must be the member name only.

4fill in blank

hard

Fill both blanks to check if 'user42' is a member of the set 'active_users'.

Redis

SISMEMBER [1] [2]

Drag options to blanks, or click blank then click option'

Aactive_users

Buser42

Cinactive_users

Duser24

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping set name and member name.

Using wrong set or member names.

The command SISMEMBER active_users user42 checks if 'user42' is in the set 'active_users'.

5fill in blank

hard

Fill all three blanks to check if 'john_doe' is a member of the set 'registered_users' and store the result in variable 'is_member'.

Redis

is_member = [1] [2] [3]

Drag options to blanks, or click blank then click option'

ASISMEMBER

Bregistered_users

Cjohn_doe

Duser_status

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong command name.

Mixing up set and member names.

Forgetting to assign the result to a variable.

The command is_member = SISMEMBER registered_users john_doe checks membership and stores the result.