String Builder&字符串，有什么区别？ [英] String Builder & String, what's the difference ?
问题描述
String Builder&字符串，有什么区别。
以及何时使用哪个？
谢谢。
周五，2004年6月25日10:24:00 +0800，Tee< th*@streamyx.com>写道：
String Builder&字符串，有什么区别。
以及何时使用？
谢谢。
基本上字符串适用于永不改变的值;但是如果你创建了一个
''字符串式'变量并且需要更改它的值（比如
将字符串值连接在一起），请使用StringBuilder：
http： //msdn.microsoft.com/library/en...ilderclass.asp
-
Craig Deelsnyder
Microsoft MVP - ASP / ASP.NET
字符串是不可变的。这意味着如果你尝试：string1 = string1 + string2，
它需要为string1创建一个新的内存位置并为GC设置原始的
位置。
StringBuilder的行为不是这样的。
Don
" Tee" < th*@streamyx.com>在消息中写道
news：#U ************** @ tk2msftngp13.phx.gbl ...String Builder&字符串，有什么区别。
以及何时使用？
谢谢。
< blockquote> Tee，
这是我对它的看法：
每当你需要进行大量的字符串操作时，请使用stringbuilder。对于
快速/小事，我不打扰。所以，如果我只是在一个
行中添加一个字符串，我会做这样的事情 -
strA = strB& strC
然而，我有一个循环，我在做1,200个连接。使用
字符串构建器减少了大量占用的时间。
其他人可能感觉不一样，但这对我有用。
-Saul
Tee < th*@streamyx.com>在消息中写道
news：％2 **************** @ tk2msftngp13.phx.gbl ...
String Builder &安培;字符串，有什么区别。
以及何时使用？
谢谢。
String Builder & String, what''s the difference.
and when to use which ?
Thanks.
On Fri, 25 Jun 2004 10:24:00 +0800, Tee <th*@streamyx.com> wrote:
String Builder & String, what''s the difference.
and when to use which ?
Thanks.
Basically String is fine for never-changing values; but if you create a
''string-like'' variable and need to change it''s value (such as
concatenating a string value together) use StringBuilder:
http://msdn.microsoft.com/library/en...ilderclass.asp
--
Craig Deelsnyder
Microsoft MVP - ASP/ASP.NET
Strings are immutable. Meaning if you try to: string1 = string1 + string2,
it needs to create a new memory location for string1 and set the original
location for GC.
StringBuilder does not behave this way.
Don
"Tee" <th*@streamyx.com> wrote in message
news:#U**************@tk2msftngp13.phx.gbl...String Builder & String, what''s the difference.
and when to use which ?
Thanks.
Tee,
Here''s my take on it :
Use stringbuilder whenever you need to do LOTS of string manipulations. For
quick/little things, I don''t bother. So if I''m just adding a string in one
line I would do something like this --
strA = strB & strC
However, I had a loop where I was doing about 1,200 concatinations. Using
string builder reduced the time this took substantially.
Others may feel different, but this works for me.
-Saul
"Tee" <th*@streamyx.com> wrote in message
news:%2****************@tk2msftngp13.phx.gbl...String Builder & String, what''s the difference.
and when to use which ?
Thanks.
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