Message passing concepts in Rust - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a channel for message passing.

Rust

let (tx, rx) = std::sync::mpsc::[1]();

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

Aspawn

Bsend

Crecv

Dchannel

Attempts:

3 left

💡 Hint

Common Mistakes

Using send or recv instead of channel to create the channel.

Trying to spawn a thread here instead of creating a channel.

The function std::sync::mpsc::channel() creates a new channel for message passing.

2fill in blank

medium

Complete the code to send a message through the channel.

Rust

tx.[1](42).unwrap();

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Asend

Brecv

Cclone

Dwait

Attempts:

3 left

💡 Hint

Common Mistakes

Using recv() on the sender side instead of send().

Trying to clone the sender instead of sending a message.

The send() method is used on the transmitter to send a message through the channel.

3fill in blank

hard

Fix the error in receiving a message from the channel.

Rust

let received = rx.[1]().unwrap();

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

Arecv

Bclone

Csend

Dwait

Attempts:

3 left

💡 Hint

Common Mistakes

Using send() on the receiver side instead of recv().

Trying to clone the receiver instead of receiving a message.

The recv() method is used on the receiver to receive a message from the channel.

4fill in blank

hard

Fill both blanks to create a thread that sends a message.

Rust

std::thread::[1](move || {
    tx.[2]("hello").unwrap();
});

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

Aspawn

Bsend

Crecv

Djoin

Attempts:

3 left

💡 Hint

Common Mistakes

Using join() instead of spawn() to create a thread.

Using recv() instead of send() to send a message.

Use spawn() to create a new thread and send() to send a message inside it.

5fill in blank

hard

Fill all three blanks to receive and print a message.

Rust

let message = rx.[1]().unwrap();
println!("[2]: {}", [3]);

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Asend

Bmessage

CReceived message

Drecv

Attempts:

3 left

💡 Hint

Common Mistakes

Using send() instead of recv() to receive the message.

Printing a wrong variable or string instead of the message.

Use recv() to get the message, then print it with the variable holding the message.