可能的编译器错误（C＃3.0） [英] Possible Compiler Bug (C# 3.0)
问题描述
附加程序无法编译。错误消息说：
"名为''i'的局部变量不能在此范围内声明，因为它会给'i'赋予不同的含义'，已经在''孩子'中使用了'
范围来表示别的东西
- 这没有多大意义。这是一个编译错误吗？
TJ
class program
{
static void Main（ string [] args）
{
switch（0）{
case 0：
for（int i = 0 ;;）{
}
案例1：
//错误CS0136：名为我的局部变量不能是在这个范围内声明了
，因为它会给''i'赋予不同的含义，这已经在''子'范围内使用了
来表示别的东西
int i = 0;
}
}
}
" Tomasz J" < oe **** @ nospam.nospamwrote in message
news：eg ************** @ TK2MSFTNGP06.phx.gbl ...
附加程序无法编译。错误消息说：
"名为''i'的局部变量不能在此范围内声明，因为它会给'i'赋予不同的含义'，已经在''孩子'中使用了'
范围来表示别的东西
- 这没有多大意义。这是一个编译错误吗？
TJ
class program
{
static void Main（ string [] args）
{
switch（0）{
case 0：
for（int i = 0 ;;）{
}
案例1：
Console.Writeline（i.ToString（ ））;
//如果以上编译，则显示i值，那就是
IN_SCOPE并已经宣布。
// int i = 0;
}
}
}
e-gads！我以为x，y，z，j，k，我的日子已经死了，走了。我们应该将这种风格称为复古代码吗？ ;-)
" Tomasz J" < oe **** @ nospam.nospamwrote in message
news：eg ************** @ TK2MSFTNGP06.phx.gbl ...
附加程序无法编译。错误消息说：
"名为''i'的局部变量不能在此范围内声明，因为它会给'i'赋予不同的含义'，已经在''孩子'中使用了'
范围来表示别的东西
- 这没有多大意义。这是一个编译错误吗？
TJ
class program
{
static void Main（ string [] args）
{
switch（0）{
case 0：
for（int i = 0 ;;）{
}
案例1：
//错误CS0136：名为我的局部变量不能是在这个范围内声明了
，因为它会给''i'赋予不同的含义，这已经在''子'范围内使用了
来表示别的东西
int i = 0;
}
}
}
这不是一个bug，在switch块中定义的变量范围是
整个开关块。我想，这是为了帮助那些使用goto
案例或转到默认功能的人。
了解更多信息：
http://msdn.microsoft.com/en- us / libr ... 49（VS.71）.aspx
-
Ciaran O''''Donnell http://wannabedeveloper.spaces.live.com
Tomasz J写道：
附加程序无法编译。错误消息说：
"名为''i'的局部变量不能在此范围内声明，因为它会给'i'赋予不同的含义'，已经在''孩子'中使用了'
范围来表示别的东西
- 这没有多大意义。这是一个编译错误吗？
TJ
class program
{
static void Main（ string [] args）
{
switch（0）{
case 0：
for（int i = 0 ;;）{
}
案例1：
//错误CS0136：名为我的局部变量不能是在这个范围内声明了
，因为它会给''i'赋予不同的含义，这已经在''子'范围内使用了
来表示别的东西
int i = 0;
}
}
}
The attached program does not compile. The error message says:
"A local variable named ''i'' cannot be declared in this scope because it
would give a different meaning to ''i'', which is already used in a ''child''
scope to denote something else"
- which does not make much sense. Is it a compiles bug?
TJ
class Program
{
static void Main(string[] args)
{
switch (0) {
case 0:
for (int i = 0; ; ) {
}
case 1:
// error CS0136: A local variable named ''i'' cannot be declared
in this scope because it would give a different meaning to ''i'', which is
already used in a ''child'' scope to denote something else
int i = 0;
}
}
}
"Tomasz J" <oe****@nospam.nospamwrote in message
news:eg**************@TK2MSFTNGP06.phx.gbl...The attached program does not compile. The error message says:
"A local variable named ''i'' cannot be declared in this scope because it
would give a different meaning to ''i'', which is already used in a ''child''
scope to denote something else"
- which does not make much sense. Is it a compiles bug?
TJ
class Program
{
static void Main(string[] args)
{
switch (0) {
case 0:
for (int i = 0; ; ) {
}
case 1:Console.Writeline( i.ToString());
//if the above compiles, and it shows the "i" value, then it is
IN_SCOPE and already declared.
//int i = 0;
}
}
}
e-gads ! I thought the days of x,y,z,j,k,i were dead and gone. Should we
call this style ''retro-code''? ;-)
"Tomasz J" <oe****@nospam.nospamwrote in message
news:eg**************@TK2MSFTNGP06.phx.gbl...The attached program does not compile. The error message says:
"A local variable named ''i'' cannot be declared in this scope because it
would give a different meaning to ''i'', which is already used in a ''child''
scope to denote something else"
- which does not make much sense. Is it a compiles bug?
TJ
class Program
{
static void Main(string[] args)
{
switch (0) {
case 0:
for (int i = 0; ; ) {
}
case 1:
// error CS0136: A local variable named ''i'' cannot be declared
in this scope because it would give a different meaning to ''i'', which is
already used in a ''child'' scope to denote something else
int i = 0;
}
}
}
This is not a bug, the scope of a variable define in a switch block is the
entire switch block. This is, i supposed, to help people who use the goto
case or goto default functionality.
for more information have a look at:
http://msdn.microsoft.com/en-us/libr...49(VS.71).aspx
--
Ciaran O''''Donnell
http://wannabedeveloper.spaces.live.com
"Tomasz J" wrote:
The attached program does not compile. The error message says:
"A local variable named ''i'' cannot be declared in this scope because it
would give a different meaning to ''i'', which is already used in a ''child''
scope to denote something else"
- which does not make much sense. Is it a compiles bug?
TJ
class Program
{
static void Main(string[] args)
{
switch (0) {
case 0:
for (int i = 0; ; ) {
}
case 1:
// error CS0136: A local variable named ''i'' cannot be declared
in this scope because it would give a different meaning to ''i'', which is
already used in a ''child'' scope to denote something else
int i = 0;
}
}
}
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