Answer:
find()
Explanation:
When dealing with MongoDB the method that needs to be used in this scenario would be the find() method. This method basically returns all of the records that exist in the collection on which it is called, if no parameter is passed. If you pass a parameter/expression then only the records that match completely the expression will be returned to the user, otherwise nothing is returned. For example, on a database (db) we would call the following
db.find() ... This will return all records
db.find({specific}) ... This will return only the records that match specific.
Answer:
class Phone(object):
def __init__(self, features, phones=[]):
self.features = features
self.phones = phones
Explanation:
In python object-oriented programming, an instance variable of a class object is created in the "__init__()" method. the "self" is a convention name used to represent the instance of an object class. The input values are assigned to the object variable with the self.'argument_name' statement.
When the phone argument is not given, the self.phones variable is initialized as an empty list.
English mathematician and inventor Charles Babbage is credited with having conceived the first automatic digital computer. During the mid-1830s Babbage developed plans for the Analytical Engine. Although it was never completed, the Analytical Engine would have had most of the basic elements of the present-day computer.
Answer:
Explanation:
Ollie’s thesis may not be backed up as reliably as he might wish. A backup program may pass over a file that is currently open for writing, as the state of the data in such a file may be indeterminate.
To put it simple, an Address Book is basically where you can store peoples names, addresses and most importantly emails so you can easily contact them. Its pretty much like your contacts on your phone.
