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Method decorators

Vinay Rawal answered on June 2, 2022 Popularity 6/10 Helpfulness 7/10

answer Method decorators

related using decorators

Method decorators

Comment

function Log(){
    return function(target, key: string, descriptor: PropertyDescriptor) {
        const oldMethod = descriptor.value;
        descriptor.value = function newFunc(...args:any[]){
            let result = oldMethod.apply(this, args);
            console.log('${key} is called with ${args.join(',')} and result ${result}');
            return result;
        }
    }
}
class Hero {
    @Log()
    attack(...args:[]) { return args.join(); }
}
const hero = new Hero();
hero.attack();

Popularity 6/10 Helpfulness 7/10 Language typescript

Source: Grepper

Tags: typescript

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Contributed on Mar 03 2023

Vinay Rawal

0 Answers Avg Quality 2/10

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using decorators

Comment

class ClassHolder:
    def __init__(self):
        self.classes = {}

    def add_class(self, c):
        self.classes[c.__name__] = c

    # -- the decorator
    def held(self, c):
        self.add_class(c)

        # Decorators have to return the function/class passed (or a modified variant thereof), however I'd rather do this separately than retroactively change add_class, so.
        # "held" is more succint, anyway.
        return c 

    def __getitem__(self, n):
        return self.classes[n]

food_types = ClassHolder()

@food_types.held
class bacon:
    taste = "salty"

@food_types.held
class chocolate:
    taste = "sweet"

@food_types.held
class tee:
    taste = "bitter" # coffee, ftw ;)

@food_types.held
class lemon:
    taste = "sour"

print(food_types['bacon'].taste) # No manual add_class needed! :D

Popularity 9/10 Helpfulness 2/10 Language python

Source: stackoverflow.com

Tags: using python py

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Contributed on Jun 02 2022

structure

0 Answers Avg Quality 2/10

Method decorators

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Method decorators

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