究竟是什么运算符| = ??? [英] what exactly does the operator |= ???

问题描述

你好!!


我正在看C中的一些代码...并看到这个异国情调 operator | =。


第一次使用它，什么是exactky做的???


提前感谢。

Erick->

hello!!

I was looking at some code in C... and saw this "exotic" operator |=.

first time with it, what exactky does???

thanks in advance.
Erick->

推荐答案

Erick-said：

Erick-said:

你好!!


我正在看C中的一些代码...并看到这个异国情调 operator | =。


第一次使用它，whatky做什么???

hello!!

I was looking at some code in C... and saw this "exotic" operator |=.

first time with it, what exactky does???

见K& R2，第50页。


-

Richard Heathfield

Usenet是一个奇怪的地方 - dmr 29/7/1999
http://www.cpax.org.uk

电子邮件：正常服务将尽快恢复。请不要

调整你的电子邮件客户端。

See K&R2, page 50.

--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999
http://www.cpax.org.uk
email: normal service will be restored as soon as possible. Please do not
adjust your email clients.

是的，那个页面是关于流量控制的，但我不认为这是

问题。不是流动，是分配。


这就是行：


* cmd | = newcmd;


问候

Erick->


Richard Heathfield写道：

yeah, that page is about flow control but I don′t think this is the
problem. Is not flow, is assigment.

this was the line:

*cmd |= newcmd;

greetings
Erick->


Richard Heathfield wrote:

埃里克说：

Erick-said:

你好!!


我正在查看C中的一些代码......看到这个异国情调 operator | =。


第一次使用它，whatky做什么???

hello!!

I was looking at some code in C... and saw this "exotic" operator |=.

first time with it, what exactky does???

见K& R2，第50页。


-

Richard Heathfield

Usenet是一个奇怪的地方 - dmr 29/7/1999
http://www.cpax.org.uk

电子邮件：正常服务将尽快恢复。请不要

调整您的电子邮件客户端。

See K&R2, page 50.

--
Richard Heathfield
"Usenet is a strange place" - dmr 29/7/1999
http://www.cpax.org.uk
email: normal service will be restored as soon as possible. Please do not
adjust your email clients.

Erick-written：

Erick-wrote:

hello !!


我正在查看C中的一些代码...并且看到了这个异国情调的代码。 operator | =。


第一次使用它，whatky做什么???

hello!!

I was looking at some code in C... and saw this "exotic" operator |=.

first time with it, what exactky does???

左边的左值是包含 - 或者是'

右边的表达式，结果存储在左值。

The lvalue on the left is inclusive-OR''d with the expression on the
right, and the result is stored in the lvalue.

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