ef get_task(task_collection, ...): """ param: task_collection (list) - holds all tasks; maps an integer ID/index to each task object (a dictionary) param: ... (str) - a string that is supposed to represent an integer ID that corresponds to a valid index in the collection returns: 0 - if the collection is empty. -1 - if the provided parameter is not a string or if it is not a valid integer Otherwise, convert the provided string to an integer; returns None if the ID is not a valid index in the list or returns the existing item (dict) that was requested. """

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Computer Fundamentals

The computer is termed computation. For calculating or computing something the device that has been used is known as the computer. Or we can say that for performing a fast arithmetic operation the device that has been used is a computer. Storing, processing, and retrieving are the main features of a computer.