Design pattern
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Description
Experience Level: Intermediate
Part 1 – With reference to the ‘Gang of Four’ (Erich Gamma, John Vlissides, Ralph Johnson, and Richard Helm) and other appropriate literature, describe the nature, use and benefits of Design Patterns in software. Name and explain the purpose of the three main categories of Design Patterns (approximately 500 words)
Part 2 – What two key principles underpin Design Patterns? Explain these and illustrate with appropriate snippets of code (approximately 300 words –)
Part 3 – For four of the following only, named Design Patterns (Factory Method; Abstract Factory; Singleton; Decorator; Façade; Iterator; Strategy), (i) state the category to which the pattern belongs; (ii) explain the intent/purpose of the pattern; (iii) provide a motivation/scenario for its use, and; (iv) give an example in the Python language of its implementation; (v) explain whether how dynamic typing or other specific characteristic of the Python language may have modified its implementation compared to more conventionally statically typed Object Oriented languages
Part 2 – What two key principles underpin Design Patterns? Explain these and illustrate with appropriate snippets of code (approximately 300 words –)
Part 3 – For four of the following only, named Design Patterns (Factory Method; Abstract Factory; Singleton; Decorator; Façade; Iterator; Strategy), (i) state the category to which the pattern belongs; (ii) explain the intent/purpose of the pattern; (iii) provide a motivation/scenario for its use, and; (iv) give an example in the Python language of its implementation; (v) explain whether how dynamic typing or other specific characteristic of the Python language may have modified its implementation compared to more conventionally statically typed Object Oriented languages
Laksithan N.
95% (4)Projects Completed
4
Freelancers worked with
4
Projects awarded
29%
Last project
31 Aug 2018
United Kingdom
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