hash in perl

hash又叫associative array但不是array啦

http://perlmaven.com/perl-hashes

http://wwwacs.gantep.edu.tr/docs/perl-ebook/ch14.htm#TheTTFONTSIZEkeysFONTTTFONTSIZEFunctionFONT

http://www.tutorialspoint.com/perl/perl_hashes.htm

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