C＃对象？ [英] C# objects?
问题描述
虽然读到C＃中的所有内容都是一个对象，但为什么我能这样做：
string temp ="" ;;
而不是
string temp = new string（""）;
这只是编译器提供的快捷方式吗？
While reading that everything in C# is an object, why is it that I can do:
string temp = "";
instead of
string temp = new string("");
Is this just a shortcut the compiler provides?
推荐答案
你知道你可以用C＃
（1）.ToString（） ;
或
（我的名字）。CompareNoCase（" Your Name"）！= 0
甚至文字字符串或整数都是C＃中的对象。
" Eddie Pazz" <博士**** @ hotmail.com>在消息中写道
新闻：e1 ************** @ TK2MSFTNGP10.phx.gbl ...
Do you know that you can do this in C#
(1).ToString();
or
("My Name").CompareNoCase("Your Name")!= 0
Even the literal string or integer are objects in C#.
"Eddie Pazz" <dr****@hotmail.com> wrote in message
news:e1**************@TK2MSFTNGP10.phx.gbl...
在阅读所有内容的同时C＃是一个对象，为什么我能这样做：
string temp ="" ;;
而不是
string temp =新字符串（"）;
这只是编译器提供的快捷方式吗？
While reading that everything in C# is an object, why is it that I can do:
string temp = "";
instead of
string temp = new string("");
Is this just a shortcut the compiler provides?
您好eddie，
字符串是特殊的并且有点像值类型（如int，
float ...）以及引用类型（其他所有内容）。
I不能确定C＃是否以相同的方式行事（希望有人可以确认或否认这一点），但在Java中，字符串是在池中收集的，并且
重复使用，我相信C＃也是如此。
string temp1 =" 123";
string temp2 =" 123" ;;
这将导致生成1个字符串并放入池中，并且两个
temp1和temp2将指向相同的字符串对象。
string temp1 = new string（" 123"）;
string temp2 = new string（" 123"）;
会导致2个字符串被生成，字符串不会被放入池中。
快乐编码！
Morten Wennevik [C＃MVP]
Hi eddie,
strings are "special" and act a little bit like a value type (like int,
float ...) as well as a reference type (everything else).
I can''t say for sure if C# acts the same way (hopefully someone can
confirm or deny this), but in Java, strings are collected in a pool and
reused, and I believe C# does so too.
string temp1 = "123";
string temp2 = "123";
This would cause 1 string to be generated and put in the pool, and both
temp1 and temp2 would point to the same string object.
string temp1 = new string("123");
string temp2 = new string("123");
This would cause 2 strings to be generated and the strings would not be
put in the pool.
Happy coding!
Morten Wennevik [C# MVP]
Eddie Pazz< dr **** @ hotmail.com>写道：
Eddie Pazz <dr****@hotmail.com> wrote:
虽然读到C＃中的所有内容都是一个对象，但为什么我能这样做：
string temp ="" ;;
而不是
字符串temp = new string（""）;
这只是编译器提供的快捷方式吗？
While reading that everything in C# is an object, why is it that I can do:
string temp = "";
instead of
string temp = new string("");
Is this just a shortcut the compiler provides?
你认为第二个会调用什么构造函数？
代码中存在的字符串文字确保带有
的字符串适当的数据在运行时可用。字符串被实习，
所以只有一个对象为所有具有相同数据的文字创建。
-
Jon Skeet - < sk *** @ pobox.com>
http：// www.pobox.com/~skeet
如果回复小组，请不要给我发邮件
What constructor would you believe the second would call?
A string literal being present in code makes sure that a string with
the appropriate data in is available at run time. Strings are interned,
so that only one object is created for all literals with the same data.
--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too
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