You really need to remember only five things to understand 90 percent of the theory of object orientation: • An object is anything that provides a way to locate, access, modify, and secure data; • A class is a description of what data is accessible through a particular kind of ...
1. 下面一段代码,实现功能为:读入一个或多个文件,列出每个文件中的所有单词,并给出每个单词出现的次数。命令格式: perl words_count ... #! /usr/bin/perl use warnings; use strict; use Data::Dumper; #print "please enter a file name: \n"; #chomp (my $file = ); while (@ARGV) ...