In the next example, we create a simple decorator example. main.py #!/usr/bin/python def enclose(fun): def wrapper(): print("**********") fun() print("**********") return wrapper def myfun(): print("myfun") enc
I can’t say I really use classes for decorators much at all, but it’s a fun example to show off that the__call__function makes any instance of a class callable like a regular function. Wrap it up! Thefunctools.wrapsfunction is a nice little convenience function that makes the wrapper...
2. 定义一个装饰器函数,接收参数 @param_decorator("example")defexample_function():print("This is an example function") 1. 2. 3. 3. 在装饰器函数内部定义一个包裹函数,接收被装饰函数 defparam_decorator(param):defdecorator(func):defwrapper(*args,**kwargs):print(f"Decorator param:{param}")res...
function logClass (target) { console.log(target) // [Function: MyTest] target指向修饰的类 target.nTest = '扩展的静态属性' // 扩展静态属性 target.prototype.nName = '动态扩展的属性' // 给原型扩展属性 target.prototype.nFun = () => { console.log('动态扩展的方法') } } @logClass clas...
after the function is called.')returnresultreturninner_wrapperreturnwrapper@my_decorator("example")...
@log_to_file("example.log")defdebug_function():return"Debug message"debug_result=debug_function()withopen("example.log","r")asfile:log_content=file.read()print(log_content) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. ...
def synchronized(lock): '''Synchronization decorator.''' def wrap(f): def new_function(*args, **kw): lock.acquire() try: return f(*args, **kw) finally: lock.release() return new_function return wrap # Example usage: from threading import Lock my_lock = Lock() @synchronized(my_lock...
function log(target, name, descriptor) { const original = descriptor.value; descriptor.value = function(...args) { console.log(Calling ${name} with, args); return original.apply(this, args); }; return descriptor; } class Example { ...
# In the previous example, we used our decorator function by passing the # function we wanted to modify to it, and assigning the result to a variable def some_function(): print "I'm happiest when decorated." # Here we will make the assigned variable the same name as the wrapped functi...
function _asHtml() { return '_name.'" value="'.$this->_value.'">'; } } /** * 抽象装饰器(Decorator):维持一个指向构件Component对象的实例,并定义一个与抽象组件角色Component接口一致的接口。 * * 我们进入有能够统一增加(一些特性)能力