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| -rw-r--r-- | src/doc/reference.md | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/src/doc/reference.md b/src/doc/reference.md index 3e0d7dd0903..1d618052e9f 100644 --- a/src/doc/reference.md +++ b/src/doc/reference.md @@ -2742,9 +2742,19 @@ items can bring new names into scopes and declared items are in scope for only the block itself. A block will execute each statement sequentially, and then execute the -expression (if given). If the final expression is omitted, the type and return -value of the block are `()`, but if it is provided, the type and return value -of the block are that of the expression itself. +expression (if given). If the block ends in a statement, its value is `()`: + +``` +let x: () = { println!("Hello."); }; +``` + +If it ends in an expression, its value and type are that of the expression: + +``` +let x: i32 = { println!("Hello."); 5 }; + +assert_eq!(5, x); +``` ### Method-call expressions |