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| -rw-r--r-- | doc/go_spec.html | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/doc/go_spec.html b/doc/go_spec.html index 069d33ba55..4f647cac10 100644 --- a/doc/go_spec.html +++ b/doc/go_spec.html @@ -2761,7 +2761,7 @@ It is shorthand for a regular <a href="#Variable_declarations">variable declarat with initializer expressions but no types: </p> -<pre class="grammar"> +<pre class="ebnf"> "var" IdentifierList = ExpressionList . </pre> @@ -2780,12 +2780,14 @@ variables provided they were originally declared earlier in the same block and at least one of the non-<a href="#Blank_identifier">blank</a> variables is new. As a consequence, redeclaration can only appear in a multi-variable short declaration. Redeclaration does not introduce a new variable; it just assigns a new value to the original. +The non-blank variable names on the left side of <code>:=</code> +must be <a href="#Uniqueness_of_identifiers">unique</a>. </p> <pre> field1, offset := nextField(str, 0) field2, offset := nextField(str, offset) // redeclares offset -a, a := 1, 2 // illegal: double declaration of a or no new variable if a was declared elsewhere +x, y, x := 1, 2, 3 // illegal: x repeated on left side of := </pre> <p> |