How can closures capture values of value types?

Closures capture a copy of the value of a value type at the moment of the closure's definition. If the value of a value type changes after the closure is defined, the closure will access its original captured copy, not the modified value.

var counter = 0

let incrementCounter = { // Closure captures a copy of `counter` (0)
    counter += 1
    print(counter)
}

incrementCounter() // Prints 1
counter = 10 // Changing the original variable `counter`

incrementCounter() // Prints 2. The closure works with the captured copy, not the changed variable.

When using @escaping closures with value types, it is important to consider this capture-by-copy mechanism, as the value may change before the closure is called.