rustHow to define closure return type in RUst
In Rust, closure return types can be defined by using the -> operator followed by the return type. For example, the following closure returns a String:
let closure = |x| -> String { format!("The value of x is {}", x) };The return type of the closure can also be inferred by the compiler, so the above example can be written as:
let closure = |x| { format!("The value of x is {}", x) };The return type of the closure can also be explicitly set to () if the closure does not return a value. For example:
let closure = |x| -> () { println!("The value of x is {}", x) };Helpful links
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