ZREM for removal in Redis - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to remove a member from a sorted set named 'myzset'.

Redis

ZREM myzset [1]

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

AZADD

Bmyzset

Cmember1

DSREM

Attempts:

3 left

💡 Hint

Common Mistakes

Using the sorted set name instead of the member name.

Using commands like ZADD or SREM instead of the member name.

The ZREM command removes the specified member from the sorted set. Here, member1 is the member to remove.

2fill in blank

medium

Complete the code to remove the member 'user42' from the sorted set 'users'.

Redis

ZREM users [1]

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

Auser42

Buser24

Cusers

DZADD

Attempts:

3 left

💡 Hint

Common Mistakes

Removing a different member than intended.

Using the sorted set name as the member.

The ZREM command removes the member user42 from the sorted set users.

3fill in blank

hard

Fix the error in the command to remove 'item5' from 'inventory'.

Redis

ZREM [1] item5

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

ASREM

Bitem5

CZADD

Dinventory

Attempts:

3 left

💡 Hint

Common Mistakes

Putting the member name where the set name should be.

Using other commands like ZADD or SREM.

The first argument after ZREM must be the sorted set name, here inventory. The member to remove is item5.

4fill in blank

hard

Fill both blanks to remove 'alpha' from the sorted set 'letters'.

Redis

ZREM [1] [2]

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

Aletters

Balpha

Cbeta

Dgamma

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping the set name and member names.

Using a member name as the set name.

The first blank is the sorted set name letters. The second blank is the member alpha to remove. To remove multiple members, you can list them all after the set name.

5fill in blank

hard

Fill all three blanks to remove 'red' and 'green' from the sorted set 'colors'.

Redis

ZREM [1] [2] [3]

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

Acolors

Bred

Cgreen

Dblue

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up the order of set name and members.

Leaving out some members to remove.

The first blank is the sorted set name colors. The next blanks are the members red and green to remove. You can remove multiple members by listing them all after the set name.