class vs. typename [英] class vs. typename

问题描述

两个关键词之间的语义/句法差异

" class"和typename （除了不同的拼写）？


-

祝你好运，

Alex。


PS。要给我发电子邮件，请删除loeschedies。从给出的电子邮件地址。

What''s the semantical/syntactical difference between two keywords
"class" and "typename" (apart from different spelling)?

--
Best regards,
Alex.

PS. To email me, remove "loeschedies" from the email address given.

推荐答案

" Alexander Malkis" <人***************** @ stone.cs.uni-sb.de>在消息中写道

新闻：c4 ********** @ hades.rz.uni-saarland.de ...

"Alexander Malkis" <al*****************@stone.cs.uni-sb.de> wrote in message
news:c4**********@hades.rz.uni-saarland.de...

什么是两个关键词之间的语义/句法差异
class和typename （除了不同的拼写）？

What''s the semantical/syntactical difference between two keywords
"class" and "typename" (apart from different spelling)?

完全没有。


我认为引入了typename，因为并非所有模板参数都是

班。


john

None at all.

I think typename was introduced because not all template parameters are
classes.

john

Alexander Malkis ; <人***************** @ stone.cs.uni-sb.de>在消息中写道

新闻：c4 ********** @ hades.rz.uni-saarland.de ...

"Alexander Malkis" <al*****************@stone.cs.uni-sb.de> wrote in message
news:c4**********@hades.rz.uni-saarland.de...

什么是两个关键词之间的语义/句法差异
class和typename （除了不同的拼写）？

What''s the semantical/syntactical difference between two keywords
"class" and "typename" (apart from different spelling)?

完全没有。


我认为引入了typename，因为并非所有模板参数都是

班。


john

None at all.

I think typename was introduced because not all template parameters are
classes.

john

John Harrison写道：

John Harrison wrote:

亚历山大·马尔基斯 <人***************** @ stone.cs.uni-sb.de>在
消息新闻中写道：c4 ********** @ hades.rz.uni-saarland.de ...

"Alexander Malkis" <al*****************@stone.cs.uni-sb.de> wrote in
message news:c4**********@hades.rz.uni-saarland.de...

语义/句法差异是什么？两个关键词之间
class和typename （除了不同的拼写）？

What''s the semantical/syntactical difference between two keywords
"class" and "typename" (apart from different spelling)?

完全没有。

我认为引入了typename，因为并非所有模板参数都是
类。 />
john

None at all.

I think typename was introduced because not all template parameters are
classes.

john

我相信我们需要将讨论限制在模板参数中，以便

来保存。这来自C ++标准：


"

模板参数中的类和类型名之间没有语义差异。"


只是迂腐。

-

p-> m ==（* p）.m == p [0]。 m
http://www.kdevelop.org
http://www.suse.com
http://www.mozilla.org

I believe we need to restrict the discussion to template parameters in order
for that to hold. This is from the C++ Standard:

"There is no semantic difference between class and typename in a
template-parameter."

Just being pedantic.
--
p->m == (*p).m == p[0].m
http://www.kdevelop.org
http://www.suse.com
http://www.mozilla.org

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