We've already seen how to use an anonymous subroutine or a reference to a named subroutine.
我们已经看到如何使用匿名的子例程或者对指定子例程的引用。
2
The dispatcher can either contain the actual code used to deal with a particular element as an anonymous subroutine or it can contain a reference to a named subroutine defined elsewhere.
分派表可以包含用来处理特定元素的实际代码(匿名子例程),也可以包含对别处定义的命名子例程的引用。
3
Listing 4 shows the printPassword subroutine, which is used to print out the password keys and timings for reference.