{"id":33937,"date":"2023-02-16T15:20:43","date_gmt":"2023-02-16T09:50:43","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-perl-on-modules-inheritancepolymorphism-closed\/"},"modified":"2023-02-16T15:20:43","modified_gmt":"2023-02-16T09:50:43","slug":"solved-perl-on-modules-inheritancepolymorphism-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-perl-on-modules-inheritancepolymorphism-closed\/","title":{"rendered":"[Solved] Perl on Modules-Inheritance,Polymorphism [closed]"},"content":{"rendered":"

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Ok. The object constructor syntax you are using is a bit akward, I’d prefer<\/p>\n

my $obj = Stats->new(13,4,56,43,33);\n<\/code><\/pre>\n
In Perl, new<\/code> is not an ordinary keyword, but a simple sub, and should be used as such. The Foo->sub(@args)<\/code> syntax is exactly equivalent to Foo::sub('Foo', @args)<\/code>, and thus takes care of passing the correct class name and calling the correct new<\/code> sub.<\/p>\n
Then, you should use the numbers you are passing to your Stats<\/code> constructor. This constructor should do the trick:<\/p>\n
sub new {\n  my ($class, @args) = @_;\n  my $self = {};\n  bless $self, $class;\n  $self->clear();\n  $self->addValue($_) foreach @args;\n  return $self;\n}\n<\/code><\/pre>\n
I stuff all arguments of the constructor into the @args<\/code> array and then loop over them and add these values to our stats object.<\/p>\n
Also, do not forget to actually call results()<\/code> to execute your test. It will print:<\/p>\n
Number of values: 5\nTotal: 149\nMean: 29.8\n<\/code><\/pre>\n<\/p><\/div>\n
<\/div>\n<\/div>\n
            0<\/span> <\/p><\/div>\n<\/div>\n
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solved Perl on Modules-Inheritance,Polymorphism [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] Ok. The object constructor syntax you are using is a bit akward, I’d prefer my $obj = Stats->new(13,4,56,43,33); In Perl, new is not an ordinary keyword, but a simple sub, and should be used as such. The Foo->sub(@args) syntax is exactly equivalent to Foo::sub(‘Foo’, @args), and thus takes care of passing the correct class … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[442],"class_list":["post-33937","post","type-post","status-publish","format-standard","hentry","category-solved","tag-perl"],"yoast_head":"\n[Solved] Perl on Modules-Inheritance,Polymorphism [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-perl-on-modules-inheritancepolymorphism-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Perl on Modules-Inheritance,Polymorphism [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] Ok. The object constructor syntax you are using is a bit akward, I’d prefer my $obj = Stats->new(13,4,56,43,33); In Perl, new is not an ordinary keyword, but a simple sub, and should be used as such. The Foo->sub(@args) syntax is exactly equivalent to Foo::sub('Foo', @args), and thus takes care of passing the correct class ... 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