Answer Posted / chaitanya
Delegation is a technique that is used in object oriented programming. This is used to show the object and the behavior of the methods that are used. The class can be created to provide an implementation of the method that allows the method to be referenced. The delegate is having the parameter and the return value in an object. It also allows the methods to be passed as parameters and allow the defining of the callback methods that can be grouped together in multiple methods. These methods can be called from a single event. The example shows a class that captures the behavior of the file and converts data from lower to uppercase.
class upcase:
def __init__(self, out):
self._out = out
def write(self, s):
self._outfile.write(s.upper())
def __getattr__(self, name):
return getattr(self._out, name)
The write() method that is used in the upcase class converts the string to the uppercase before calling another method. The delegation is being given using the self.__outfile object.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
What is py checker in python?
What is the input function in python?
How to display the contents of the text file in reverse order?
Which is best python or r?
What is the most "pythonic" way to iterate over a list in chunks?
What is a variable in python?
How is the Implementation of Pythons dictionaries done?
Whenever python exists why does all the memory is not de-allocated / freed when python exits?
Is python a nonetype?
What is the __ init __ method used for?
Can we concat bytes to str?
What is sphinx python?
What is an elif in python?
How to remove whitespaces from a string in python?
How to make any variable private in python ?