Creational Design Pattern - Singleton - Githubissues

Kamaropoulos / COVID19Py

A tiny Python package for easy access to up-to-date Coronavirus (COVID-19, SARS-CoV-2) cases data.

https://pypi.org/project/COVID19Py/

GNU General Public License v3.0

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Creational Design Pattern - Singleton #133

Closed ankur7york closed 2 years ago

ankur7york commented 3 years ago

Reference Issues/PRs

Creational Design Pattern can be applied

What does this implementation do?

Implemented Singleton
If instance of COVID19 does not already exist, it is created and returned
If instance of COVID19 already exists, Exception is raised
Ensures existence of only one instance

Benefits

Takes responsibility of managing instance away from programmer
Memory saved
Bugs resulting from multiple instances are avoided