Closure = Lambda(C++)
Closure is a function-like construct that can capture variables from the environment in which it is defined.
|
Rust (Closure) |
C++ (Lambda) |
| Can capture variables from their surrounding environment |
Yes |
Yes |
| Syntax |
|...| { ... } |
[ ] (parameters) { ... } |
| Different Types |
Move, Borrow Closure |
There are no types in lambda |
| Can place break in closure? |
No. You can do return. But rust does not allow break due to ownership and borrow check rules |
Yes |
Closure Types
Move Closure
A move closure captures variables from its environment by taking ownership of them (i.e., moving them). Example
fn main() {
let x = 10;
let closure = || {
println!("Value of x: {}", x);
};
closure(); // This is a move closure since it captures 'x' by moving it.
// 'x' cannot be used after this point, as it has been moved into the closure.
}
Borrow Closure
A borrow closure captures variables by borrowing them (i.e., creating references to them)