Dispatch table

In computer science, a dispatch table is a table of pointers to functions or methods. Use of such a table is a common technique when implementing late binding in object-oriented programming. In computer science, a dispatch table is a table of pointers to functions or methods. Use of such a table is a common technique when implementing late binding in object-oriented programming. The following shows one way to implement a dispatch table in Perl, using a hash to store references to code (also known as function pointers). Running this Perl program as perl greet -h will produce 'hello', and running it as perl greet -g will produce 'goodbye'.