qbit/go
1
0
Fork 0
mirror of https://github.com/golang/go synced 2024-11-21 12:54:45 -07:00
Code Releases Activity

spec: make bitwise operators stand out

Browse Source 
The (and not) arguably sounds like it is trying to say something - and not what?.

Just an idea, won't be hurt if it gets rejected.

R=gri, dsymonds, r
CC=golang-dev
https://golang.org/cl/6498115
This commit is contained in:
Russ Cox 2012-09-12 12:05:24 -04:00
parent 452d6b46a3
commit 1b4e37a43c
1 changed files with 11 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
doc/go_spec.html
View File

@ -1,6 +1,6 @@
<!--{
"Title": "The Go Programming Language Specification",
"Subtitle": "Version of September 7, 2012",
"Subtitle": "Version of September 12, 2012",
"Path": "/ref/spec"
}-->
@ -2874,8 +2874,8 @@ As a consequence, statement <code>*p++</code> is the same as <code>(*p)++</code>
<p>
There are five precedence levels for binary operators.
Multiplication operators bind strongest, followed by addition
operators, comparison operators, <code>&amp;&amp;</code> (logical and),
and finally <code>||</code> (logical or):
operators, comparison operators, <code>&amp;&amp;</code> (logical AND),
and finally <code>||</code> (logical OR):
</p>
<pre class="grammar">
@ -2918,10 +2918,10 @@ to strings. All other arithmetic operators apply to integers only.
/ quotient integers, floats, complex values
% remainder integers
&amp; bitwise and integers
| bitwise or integers
^ bitwise xor integers
&amp;^ bit clear (and not) integers
&amp; bitwise AND integers
| bitwise OR integers
^ bitwise XOR integers
&amp;^ bit clear (AND NOT) integers
&lt;&lt; left shift integer &lt;&lt; unsigned integer
&gt;&gt; right shift integer &gt;&gt; unsigned integer
@ -2981,7 +2981,7 @@ int64 -9223372036854775808
If the divisor is zero, a <a href="#Run_time_panics">run-time panic</a> occurs.
If the dividend is positive and the divisor is a constant power of 2,
the division may be replaced by a right shift, and computing the remainder may
be replaced by a bitwise "and" operation:
be replaced by a bitwise AND operation:
</p>
<pre>
@ -3182,9 +3182,9 @@ The right operand is evaluated conditionally.
</p>
<pre class="grammar">
&amp;&amp; conditional and p &amp;&amp; q is "if p then q else false"
|| conditional or p || q is "if p then true else q"
! not !p is "not p"
&amp;&amp; conditional AND p &amp;&amp; q is "if p then q else false"
|| conditional OR p || q is "if p then true else q"
! NOT !p is "not p"
</pre>