在块中定义变量？ [英] Defining variables in a block?
问题描述
是否可以在一个块中定义一个变量，以使
在该块之外不可见？例如，在CI中可以写出
{
int a
....
}
然后只能在curley括号内使用
在Pascal中有''Begin / End''
tnx
LucioH写道：是否有可能在一个块中定义一个变量，以使它在该块之外不可见？例如，在CI中可以写出
然后一个只能在curley括号
在Pascal中有''开始/结束''
没有*完全*像{}或开始/结束我可以考虑到;但是你可以使用任何现有的块结构来模拟这种纯粹的语法块：
做
....
循环直到真
如果为真那么
....
结束如果
带新物件
....
结束时
-
Larry Lard
回复团体请
（回复自我） ）
Larry Lard写道：LucioH写道：是否可以在块中定义变量以便制作它在那块外面看不见？例如，在CI中可以写出
然后一个只能在curley括号
在Pascal中有''开始/结束''
没有*完全*像{}或开始/结束我能想到的;但是你可以使用任何现有的块结构来模拟这种纯粹的语法块：
做
...
Loop Until True
如果真的那么
...
结束如果
使用新对象
...
结束
比上面的更好（我认为这不会起作用，但
确实如此），这避免了创建一个对象： br />
什么都没有
....
结束
> -
Larry Lard
回复团体
Lucio，
块尺寸值/对象中的A在块外总是不可见
我希望这会有所帮助，
Cor
Is it possible to define a variable in a block in order to make
it invisible outside that block? For example, in C I can write
{
int a
....
}
then a will only be available inside the curley brackets
In Pascal there is ''Begin/End''
tnx
LucioH wrote:Is it possible to define a variable in a block in order to make
it invisible outside that block? For example, in C I can write
{
int a
...
}
then a will only be available inside the curley brackets
In Pascal there is ''Begin/End''
Nothing *exactly* like { } or Begin/End I can think of; however you can
use any of the existing block constructs to simulate this sort of
purely syntactic block:
Do
....
Loop Until True
If True Then
....
End If
With New Object
....
End With
--
Larry Lard
Replies to group please
(replying to self)
Larry Lard wrote:LucioH wrote:Is it possible to define a variable in a block in order to make
it invisible outside that block? For example, in C I can write
{
int a
...
}
then a will only be available inside the curley brackets
In Pascal there is ''Begin/End''
Nothing *exactly* like { } or Begin/End I can think of; however you can
use any of the existing block constructs to simulate this sort of
purely syntactic block:
Do
...
Loop Until True
If True Then
...
End If
With New Object
...
End With
Better than the above is this (which I didn''t think would work, but
does), which avoids creating an object:
With Nothing
....
End With
--
Larry Lard
Replies to group please
Lucio,
A in a block dimensioned value/object is always invisible outside a block
I hope this helps,
Cor
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