在perl中将局部变量合并到全局哈希中

我需要在多个用户哈希中合并一个通用哈希（宏）。实际上，这些规范在perl中都是以HoH/HoL形式编写的

我希望“用户”规范采用宏规范，并进行自己的修改。在下面的示例中，变量“$v_Y”需要在user1和user2中具有不同的值

我下面所说的并不是确切的代码，而是试图说明这个问题。我不能有多个$v_Y值，因为已经创建了宏规范

## this is in a package
my $MACRO_SPEC = {
  mkeyX   => "value_X",
  mkeyY   => $v_Y,
};

#this is USER1 package,
$v_Y = "U1_VALUE_X";
# use MACRO_SPEC
my $USER1 = (
  u1key1 => "u1value1",      u1macrokey => $MACRO_SPEC,  # need macro to interpolate 'local' $v_Y 
);

#this is USER2 package,
$v_Y = "U2_VALUE_X";
# use MACRO_SPEC
my $USER2 = (
  u2key1 => "u2value1",
  u2macrokey => $MACRO_SPEC,  # need macro to interpolate 'local' $v_Y 
);


#this is how USER1 should look after the interpolation
my $USER1 = (
  u1key1 => "u1value1",
  u1macrokey => { 
                  mkeyX   => "value_X",
                  mkeyY   => "U1_VALUE_X"
                },
);
#this is how USER2 should look after the interpolation
my $USER2 = (
  u2key1 => "u2value1",
  u1macrokey => {
                  mkeyX   => "value_X",
                  mkeyY   => "U2_VALUE_X"
                },
);

---

就像melpomene建议的那样，您希望

$MACRO\u SPEC

成为一个函数，每次调用它时都能生成不同的内容

package One;
our $v_Y;
my $MACRO_SPEC = sub { +{ mkeyX => "value_X", mkeyY => $v_Y } };

...

package USER1;
$One::v_Y = "U1_VALUE_X";
my $user1 = {          # { }, not ( ), to define a hash reference
    u1key1 => "u1value1", 
    u1macrokey => $MACRO_SPEC->(),   # $f->() to exec code defined in $f
    ...
};

---

为什么不把你的“宏”变成一个函数呢？你能把

$USER1

和

$USER2

之后应该是什么样子吗？你可以回答你的问题。还要注意，您使用括号

（）

而不是花括号

{}

来定义这些，这是错误的。