Explain the singleton, facade, or handle class design
pattern?
Answers were Sorted based on User's Feedback
Answer / ash
Singleton - single instance of the class will be used. Many
uses.
facade - simplifying interface(s) into simple interface.
Used in application or presentation layer as api or for
wrapping external third-party api/resource
Handle - one method interface with one "action" argument.
Other arguments can be passed as list for "action". Used
when we dont know upfront which methods we would support and
dont want clients to recompile. Somewhat similar to command
pattern
Is This Answer Correct ? | 0 Yes | 0 No |
Answer / abere a .yimame
Design patterns are higher level abstractions that define
common software problems and solutions to these
problems.Their major importance: they enable software
developers to use best software practice , expertise and
reusablity of good experiance with out ever doing the same
problem agian and again.
Is This Answer Correct ? | 1 Yes | 13 No |
what is the difference between the Adapter Pattern and Proxy Patterns?its seems both are almost similar?
Did you use ooa/ood methodologies? Did you use design patterns?
What is the difference between 3 tier and n tier architecture?
What is onion architecture?
What is singleton design pattern
1 Answers CSS, Dimdim, Fulcrum Logic, TCS, Wipro,
Describe the builder design pattern
what are the creational design patterns
Give me example of chain of responsibility design pattern?
Give me example of observer design pattern?
What is factory method in design pattern?
What is the executor design pattern?
Design the Factory pattern and What is its application ?