Mid（）功能瘫痪了吗？ [英] Mid() function crippled?

问题描述

大家好，


为什么Mid（）函数只能在
VBScript的一个方向上工作？此代码适用于VB6但不适用于VBScript？有没有办法围绕它？
？我正在尝试创建一个ASP页面，它生成一个固定宽度的

文本文件，用于导入第三方遗留应用程序，我不会对b
控制。


- 代码示例 -

Dim strSomeString


strSomeString =空格（100）


Mid（strSomeString，1,4）=" test"

Mid（strSomeString，10,20）="别的什么

- 样本 -


谢谢，


肯。

解决方案

Ken VdB于2004年4月2日在microsoft.public.inetserver.asp.general写道：

Mid（strSomeString，1,4）=" test"
Mid（strSomeString，10,20）=" Something"

不在VBScript中。请阅读规范。


脚本语言vbscript和jscript只处理完整的字符串。


但是你可以创建这样的函数：


函数toMid（插入，插入，开始）

toMid = left（插入，开始）& _

insert& mid（插入，开始+ len（插入））

结束功能


-

Evertjan。

荷兰。

（请在我的电子邮件地址中将x'变为点数）

" Ken VdB" < PU **************** @ nospam.floridus.com>在消息中写道

新闻：uD ************** @ TK2MSFTNGP10.phx.gbl ...

大家好，

为什么Mid（）函数只能在VBScript的一个方向上工作？此代码适用于VB6但不适用于VBScript？它周围有什么方法吗？我正在尝试创建一个ASP页面，它生成一个固定宽度的文本文件，以便导入到我无法控制的第三方遗留应用程序中。

- -code sample--
Dim strSomeString

strSomeString =空格（100）
中（strSomeString，1,4）=" test"
Mid（strSomeString，10,20）=" Something"
--ee sample -

为Evertjan的回复添加一点，使用与MS相同的术语

文件：


Mid功能 （即，x = mid（...））在VBS中的工作方式与在

VB（或者就此而言，QB）中的工作方式完全相同。 Mid声明 （即，mid（...）= ...），

然而，在VBS中不可用。


Joe Earnest

Joe Earnest于2004年4月3日在

microsoft.public.inetserver.asp.general写道：

为Evertjan添加一点的答复，使用与MS
文档相同的术语：

Mid"功能& （即，x = mid（...））在VBS中的工作方式与在VB中（或者就此而言，QB）完全相同。 Mid声明 （即，
mid（...）= ...）然而，在VBS中不可用。

问题在于微软的基础知识系统地试图掩盖声明和函数之间的差异

。

制作让我们 （1980？）声明和呼叫声明（1995？）声明

默认是这个的一部分。


永远不会对确切含义有深刻的理解，如果它们不是历史上倾向的b $ b。


========= ====


mid（）语句特别有用，如果stringvariable可以在内部操作
，从而提高速度[= processortime

消费]和空间[=内存消耗]。在解释[= script]

语言内核中，这不如汇编语言[pre]

处理那么有用。


一个不错的inbetween是Forth语言[内核依赖，cource]

其中字符串变量只能在就地操作，如果结果

得到更短，或者保持相同的长度。


另一方面，mid（）函数根本没有削弱。


-

Evertjan。

荷兰。

（请在我的电子邮件地址中将x'变为点数）

Hi everyone,

Is there a reason why the Mid() function only works in one direction in
VBScript? This code works in VB6 but not in VBScript? Is there a way
around it? I am trying to create an ASP page which produces a fixed width
text file for import into a third party legacy application which I don''t
have control over.

--code sample--
Dim strSomeString

strSomeString = Space(100)

Mid(strSomeString, 1, 4) = "test"
Mid(strSomeString, 10, 20) = "Something else"
--end sample--

Thanks,

Ken.

解决方案

Ken VdB wrote on 02 apr 2004 in microsoft.public.inetserver.asp.general:

Mid(strSomeString, 1, 4) = "test"
Mid(strSomeString, 10, 20) = "Something else"

Not in VBScript. Please read the specs.

the script languages vbscript and jscript only handle complete strings.

However you can make a function like that:

function toMid(insert,inserted,start)
toMid = left(inserted,start) &_
insert & mid(inserted,start+len(insert))
end function

--
Evertjan.
The Netherlands.
(Please change the x''es to dots in my emailaddress)

Hi,

"Ken VdB" <pu****************@nospam.floridus.com> wrote in message
news:uD**************@TK2MSFTNGP10.phx.gbl...

Hi everyone,

Is there a reason why the Mid() function only works in one direction in
VBScript? This code works in VB6 but not in VBScript? Is there a way
around it? I am trying to create an ASP page which produces a fixed width
text file for import into a third party legacy application which I don''t
have control over.

--code sample--
Dim strSomeString

strSomeString = Space(100)

Mid(strSomeString, 1, 4) = "test"
Mid(strSomeString, 10, 20) = "Something else"
--end sample--

To add a bit to Evertjan''s reply, using the same terminology as the MS
documentation:

The Mid "function" (i.e., x= mid(...) ) works in VBS exactly as it does in
VB (or, for that matter, QB). The Mid "statement" (i.e., mid(...)= ... ),
however, is not available in VBS.

Joe Earnest

Joe Earnest wrote on 03 apr 2004 in
microsoft.public.inetserver.asp.general:

To add a bit to Evertjan''s reply, using the same terminology as the MS
documentation:

The Mid "function" (i.e., x= mid(...) ) works in VBS exactly as it
does in VB (or, for that matter, QB). The Mid "statement" (i.e.,
mid(...)= ... ), however, is not available in VBS.

The problem is Microsoft in its Basics systematically tries to obscure
the difference between a statement and a function.

Making the "Let" (1980?) statement and the "Call" (1995?) statement both
be default is part off this.

Newbees, those that started programming after those days that is, will
never get a deep understanding of the exact meanings, if they are not
historically inclined.

=============

The mid() statement is specially usefull if the stringvariable can be
internally manipulated, thereby improving speed [= processortime
consumption] and space [= memory consumption]. In interpreted [= script]
language kernels this is not as useful as in assembling language [pre]
processing.

A nice inbetween is the Forth language [kernel dependent, of cource]
where a string variable can only be manipulated "in place", if the result
gets a shorter, or keeps the same length.

The mid() function, on the other hand, is not crippled at all.

--
Evertjan.
The Netherlands.
(Please change the x''es to dots in my emailaddress)

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