What are some examples of temporal dead zones?

Can you explain what a temporal dead zone is in JavaScript?

Sure! A temporal dead zone (TDZ) refers to the period of time in which a variable is inaccessible due to the way JavaScript handles variable declarations with let and const. It occurs from the start of the block until the variable is declared.

Can you give me an example of a temporal dead zone?

Absolutely! Here's an example:

function example() {
    console.log(a); // ReferenceError: Cannot access 'a' before initialization
    let a = 10;
}
example();

In this code, trying to access a before its declaration results in a ReferenceError due to the TDZ.

Are there any other programming languages that have a similar concept?

Yes, other languages like Python and Swift also have similar concepts where variables are not accessible before their declaration, though the specifics may vary.