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spec: fix incorrect comment in shift example

- adjusted example code
- fixed comments

Fixes #14785.

Change-Id: Ia757dc93b0a69b8408559885ece7f3685a37daaa
Reviewed-on: https://go-review.googlesource.com/22353
Reviewed-by: Rob Pike <r@golang.org>
This commit is contained in:
Robert Griesemer 2016-04-21 12:47:24 -07:00
parent c8bd293e56
commit 5213cd7000

View File

@ -1,6 +1,6 @@
<!--{
"Title": "The Go Programming Language Specification",
"Subtitle": "Version of April 19, 2016",
"Subtitle": "Version of April 21, 2016",
"Path": "/ref/spec"
}-->
@ -3326,8 +3326,8 @@ var s uint = 33
var i = 1&lt;&lt;s // 1 has type int
var j int32 = 1&lt;&lt;s // 1 has type int32; j == 0
var k = uint64(1&lt;&lt;s) // 1 has type uint64; k == 1&lt;&lt;33
var m int = 1.0&lt;&lt;s // 1.0 has type int
var n = 1.0&lt;&lt;s != i // 1.0 has type int; n == false if ints are 32bits in size
var m int = 1.0&lt;&lt;s // 1.0 has type int; m == 0 if ints are 32bits in size
var n = 1.0&lt;&lt;s == j // 1.0 has type int32; n == true
var o = 1&lt;&lt;s == 2&lt;&lt;s // 1 and 2 have type int; o == true if ints are 32bits in size
var p = 1&lt;&lt;s == 1&lt;&lt;33 // illegal if ints are 32bits in size: 1 has type int, but 1&lt;&lt;33 overflows int
var u = 1.0&lt;&lt;s // illegal: 1.0 has type float64, cannot shift