fieldless -> C-like

Author: fee1-dead

src/expressions/operator-expr.md

@@ -316,7 +316,7 @@ reference types and `mut` or `const` in pointer types.
 | Type of `e`           | `U`                   | Cast performed by `e as U`       |
 |-----------------------|-----------------------|----------------------------------|
 | Integer or Float type | Integer or Float type | Numeric cast                     |
-| Field-less enum       | Integer type          | Enum cast                        |
+| C-like enum           | Integer type          | Enum cast                        |
 | `bool` or `char`      | Integer type          | Primitive to integer cast        |
 | `u8`                  | `char`                | `u8` to `char` cast              |
 | `*T`                  | `*V` where `V: Sized` \* | Pointer to pointer cast       |

src/items/enumerations.md

@@ -165,19 +165,19 @@ of the discriminant.
 
 #### Casting
 
-If an enumeration is fieldless, then its discriminant can be directly
-accessed with a [numeric cast]; e.g.:
+If an enumeration is C-like (with no tuple and struct variants), then its
+discriminant can be directly accessed with a [numeric cast]; e.g.:
 
 ```rust
 enum Enum {
-    Unit,
-    Tuple(),
-    Struct{},
+    Foo,
+    Bar,
+    Baz,
 }
 
-assert_eq!(0, Enum::Unit as isize);
-assert_eq!(1, Enum::Tuple() as isize);
-assert_eq!(2, Enum::Struct{} as isize);
+assert_eq!(0, Enum::Foo as isize);
+assert_eq!(1, Enum::Bar as isize);
+assert_eq!(2, Enum::Baz as isize);
 ```
 
 #### Pointer Casting