Edit documentation.

2020-06-22 00:03:45 +08:00
parent 7cc1a3f5dc
commit d728ac6758
37 changed files with 386 additions and 147 deletions
--- a/doc/src/language/constants.md
+++ b/doc/src/language/constants.md
@@ -13,7 +13,8 @@ print(x * 2);       // prints 84
 x = 123;            // <- syntax error: cannot assign to constant
 ```

-Constants must be assigned a _value_, not an expression.
+Unlike variables which need not have initial values (default to [`()`]),
+constants must be assigned one, and it must be a constant _value_, not an expression.

 ```rust
 const x = 40 + 2;   // <- syntax error: cannot assign expression to constant