具有强类型的动态数组？ [英] Dynamic array with strong types?
问题描述
有没有办法在C＃中使用强类型动态数组？
ArrayList要求你每次都要施放你想要访问一个
元素
对象[]不是动态的
我已经使用了写hacky Add（ ）对象的函数[]（下面）
另一种选择是派生一个ArrayListBool等..来自
ArrayList其中索引器执行了强制转换并返回了一个强大的类型
但是我会有比这些更好的方法吗？
我想要一个等同于C ++ std ::向量< type>
从
框架中删除它似乎是一个令人惊讶的疏忽
Am我在这里遗漏了一些明显的东西？
Vin
>我已经选择了写一个hacky Add（ ）对象的功能[]（下）
忘记代码
private o bject [] AddToArray（object [] aSrc，object aNew）
{
if（aSrc.GetType（）== typeof（int []））
{
int [] aArray = new int [aSrc.GetLength（0）+ 1];
aSrc.CopyTo（aArray，0）;
aSrc = aArray;
aSrc [aSrc.GetLength（0） - 1] =（int）aNew;
}
//等等其他类型
返回aSrc;
}
Hello Vincent，
您想要的是通用类型，但它们只能在下一版本的框架中使用。
在.net 2.0中，您可以创建一个ArrayList< bool> ;，在1.1中你必须像你一样扩展提供的ArrayList或自己编写。
我建议你下载Codesmith和一些集合？的模板，它们将帮助你自动创建强类型集合。
Codesmith： http：// www。 ericjsmith.net/codesmith/
Codesmith的集合模板： http://www.kynosarges.de /Templates.html
问候，
-----
Ariel Popovsky
< blockquote class =post_quotes>
有没有办法在C＃中使用强类型动态数组？
每次要访问时，ArrayList都要求你进行转换
元素
对象[]不动态
我已经为对象[]（下面）编写了一个hacky Add（）函数
另一个替代方案从ArrayList中得到一个ArrayListBool等..其中索引器做了强制转换并返回了强类型
但是我会有比这些更好的方法吗？
我想要一个等同于C ++ std :: vector< type>
将这个从
框架中删除似乎是一个令人惊讶的疏忽
>我错过了一些明显的东西吗？
Vin
周五，2004年11月5日04:42:20 -0800，Ariel Popovsky
< AP ******* @ hotspamNOmail.com>写道：
Hello Vincent，
你想要的是通用类型，但它们只能在下一版本的框架中使用。
在.net 2.0中你可以创建一个ArrayList< bool>，在1.1中你必须像你一样扩展提供的ArrayList或自己编写。
我建议你下载Codesmith和一些集合的模板来帮助你自动化强类型集合的创建。
Codesmith： http：// www.ericjsmith.net/codesmith/
Codesmith的集合模板： http://www.kynosarges.de/Templates.html
问候，
-----
Ariel Popovsky
看起来仍然是一个非常糟糕的疏忽\决定
哦，至少我知道我不是只是错过了明显的
谢谢，Vin
Hi,
Is there any way of having a strongly typed dynamic array in C#?
ArrayList requires you to cast every time you want to access an
element
object[] isn''t dynamic
I have resorted writing a hacky Add() function for object[] (below)
the other alternative was deriving a ArrayListBool etc.. from
ArrayList where the indexer did the cast and returned a strong type
but I would have though there must be a better way than these?
I want an equivalent to the C++ std::vector<type>
It seems like an astonishing oversight to leave that out of the
framework
Am I missing something obvious here?
Vin
>I have resorted writing a hacky Add() function for object[] (below)
Forgot the code
private object[] AddToArray(object[] aSrc, object aNew)
{
if (aSrc.GetType() == typeof(int[]))
{
int[] aArray = new int[aSrc.GetLength(0) + 1];
aSrc.CopyTo(aArray, 0);
aSrc = aArray;
aSrc[aSrc.GetLength(0) - 1] = (int)aNew;
}
// and so on for other types
return aSrc;
}
Hello Vincent,
What you want are generic types, but they will be available only in the next version of the framework.
In .net 2.0 you can create an ArrayList<bool>, in 1.1 you have to extend the provided ArrayList as you did or write your own.
I recommend you download Codesmith and some collection?′s templates that will help you automate the creation of strongly typed collections.
Codesmith: http://www.ericjsmith.net/codesmith/
Collection templates for Codesmith: http://www.kynosarges.de/Templates.html
Greetings,
-----
Ariel Popovsky
Hi,
Is there any way of having a strongly typed dynamic array in C#?
ArrayList requires you to cast every time you want to access an
element
object[] isn''t dynamic
I have resorted writing a hacky Add() function for object[] (below)
the other alternative was deriving a ArrayListBool etc.. from
ArrayList where the indexer did the cast and returned a strong type
but I would have though there must be a better way than these?
I want an equivalent to the C++ std::vector<type>
It seems like an astonishing oversight to leave that out of the
framework
Am I missing something obvious here?
Vin
On Fri, 05 Nov 2004 04:42:20 -0800, Ariel Popovsky
<ap*******@hotspamNOmail.com> wrote:
Hello Vincent,
What you want are generic types, but they will be available only in the next version of the framework.
In .net 2.0 you can create an ArrayList<bool>, in 1.1 you have to extend the provided ArrayList as you did or write your own.
I recommend you download Codesmith and some collection′s templates that will help you automate the creation of strongly typed collections.
Codesmith: http://www.ericjsmith.net/codesmith/
Collection templates for Codesmith: http://www.kynosarges.de/Templates.html
Greetings,
-----
Ariel Popovsky
Still seems like an very bad oversight\decision
Oh well at least I know I amn''t just missing the obvious
Thanks, Vin
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