RustTutorials/src/VariableBindings/ScopeAndShadowing.rs

pub fn main(){
	// This binding lives in the main function
	let long_lived_binding = 1;

	// This is a block, and has a smaller scope than the main function
	{
		// This binding only exists in this block
		let short_lived_binding = 2;

		println!("inner short: {}", short_lived_binding);

		// This binding *shadows* the outer one
		let long_lived_binding = 5_f32;

		println!("inner long: {}", long_lived_binding);
	}
	// End of the block

	// Error! `short_lived_binding` doesn't exist in this scope
	//println!("outer short: {}", short_lived_binding);
	// FIXME ^ Comment out this line

	println!("outer long: {}", long_lived_binding);
	
	// This binding also *shadows* the previous binding
	let long_lived_binding = 'a';
	
	println!("outer long: {}", long_lived_binding);
}