#Rust 🦀 – Accesing external vars in threads 🧵

Hi !

In order to access external variables in a thread, we must use the move closure with the move keyword in the thread creation.

In example, these 2 lines will define and create a mutable variable and then a new thread where we can access the var.

let mut new_var = "hey!";
let handle =thread::spawn(move || {
// access to new_var here
})

And an example of the previous code will have:

• A main thread where we declare a string var with a message.
• The 2nd thread that will display a message using the main thread message.

The code output shows that the app is closed before finishing the execution of the 2nd thread.

Super cool !

Happy coding!

Greetings

El Bruno

More posts in my blog ElBruno.com.

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