|val| val + x
```
-The syntax and capabilities of closures make them very convenient for
+The syntax and capabilities of closures make them very convenient for
on the fly usage. Calling a closure is exactly like calling a function.
-However, both input and return types *can* be inferred and input
+However, both input and return types *can* be inferred and input
variable names *must* be specified.
Other characteristics of closures include:
```rust,editable
fn main() {
// Increment via closures and functions.
- fn function (i: i32) -> i32 { i + 1 }
+ fn function(i: i32) -> i32 { i + 1 }
// Closures are anonymous, here we are binding them to references
// Annotation is identical to function annotation but is optional