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spec: clarify that short variable declarations can redeclare parameters

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Fixes #9837.

Change-Id: Ia513c7e5db221eee8e3ab0affa6d3688d2099fd9
Reviewed-on: https://go-review.googlesource.com/13130
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Robert Griesemer 2015-08-04 11:29:28 -07:00
parent 87c8707e6f
commit 85789daac3
1 changed files with 6 additions and 6 deletions
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12
doc/go_spec.html
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@ -2006,12 +2006,12 @@ _, y, _ := coord(p) // coord() returns three values; only interested in y coord
</pre>
<p>
Unlike regular variable declarations, a short variable declaration may redeclare variables provided they
were originally declared earlier in the same block with the same type, 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.
Unlike regular variable declarations, a short variable declaration may <i>redeclare</i>
variables provided they were originally declared earlier in the same block
(or the parameter lists if the block is the function body) with the same type,
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.
</p>
<pre>