method-modifier | 易学教程

Is there a way to inject a try catch inside a function?

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问题 Maybe some of you know about AOP, in some languages using AOP can lead you to be able to inject code after, before, or while a method is executing,etc. What I want is to apply the same in Javascript, I am currently working on a massive app which has more than 300 ajax calls, and every time I need to do some change on the catch statement on them, I have to modify them one by one which is very tedious. What I want to do is something like : functionName.before("try {") functionName.after("}

In Perl/Moose, how can I apply a modifier to a method in all subclasses?

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问题 I have a Moose class that is intended to be subclassed, and every subclass has to implement an "execute" method. However, I would like to put apply a method modifier to the execute method in my class, so that it applies to the execute method in all subclasses. But method modifiers are not preserved when a method is overriden. Is there any way to ensure that all subclasses of my class will have my method modifier applied to their execute methods? Example: In a superclass, I have this: before

In Perl/Moose, how can I apply a modifier to a method in all subclasses?

阅读更多关于 In Perl/Moose, how can I apply a modifier to a method in all subclasses?

I have a Moose class that is intended to be subclassed, and every subclass has to implement an "execute" method. However, I would like to put apply a method modifier to the execute method in my class, so that it applies to the execute method in all subclasses. But method modifiers are not preserved when a method is overriden. Is there any way to ensure that all subclasses of my class will have my method modifier applied to their execute methods? Example: In a superclass, I have this: before execute => sub { print "Before modifier is executing.\n" } Then, in a subclass of that: sub execute {

Pass variables around the around method modifier

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问题 Is it possible to pass variables between multiple calls to the around MethodModier? example (that doesn't work but hopefully conveys what I want to do) sub mysub { ... }; around 'mysub' => sub { my $orig = shift; my $self = shift; my $value = get_value; $self->orig(@_); }; around 'mysub' => sub { my $orig = shift; my $self = shift; my $value = shift; my $output = "sometext $value" . $self->orig(@_); . 'someothertext $value' ; }; I'd eventually like to have these 'arounds' placed in pluggable