Subjects
PRICING
COURSES
SIGN IN
Start Free Trial
Olabade O.
Medical student teaching for over 5 years
Tutor Satisfaction Guarantee
Java Programming
TutorMe
Question:

What is the different between initializing and instantiating a variable?

Olabade O.
Answer:

Think of initializing a variable as a reservation at a restaurant and initializing the variable as actually showing up to the restaurant. Initializing a variable simply assigns a placeholder because there is no object made yet. Just like when I make a reservation at a restaurant, I (the object) am not there yet. I simply have a placeholder telling the restaurant that I will be coming. Instantiating a variable, is when I actually make the object. This is akin to showing up at the restaurant, because now I, the object, am actually there. private Computer _myLaptop; Here, I have initialized the _myLaptop variable or made a reservation. I have a placeholder for a Computer object called _myLaptop but I do not have a computer object yet. _myLaptop = new Computer(); Here, I have instantiated the object. Now, I have a real instance of the object that I can use and manipulate.

Biology
TutorMe
Question:

How does a positive feedback loop ever stop if it keeps feeding into itself to push the body away from equilibrium?

Olabade O.
Answer:

While the body is pushing itself away from homeostasis, the body is pushing itself away from homeostasis towards a specific goal. Once this goal is reached, the body has ways to end the positive feedback loop such as antagonists. For example, in the oxytocin feedback loop, the body keeps producing more oxytocin so the uterus can keep contracting in order to give birth to the child. Once the child is born and out of the uterus, the goal is reached. Antagonists bond to the oxytocin receptors so oxytocin can no longer bond, which means there is no more positive feedback, thus ending the loop.

Cognitive Science
TutorMe
Question:

How is typicality a problem for the classical view of categorization?

Olabade O.
Answer:

The classical view of categorization follows 3 rules. 1. Clear definitions. Objects have properties that are singly necessary and jointly sufficient. 2. Uniformity. All category members are equally part of the category. 3. Inflexibility. Category boundaries do not shift. Typicality violates the second rule of uniformity. Uniformity states that all category members are equally part of the category, however people think of a dolphin as a less typical mammal than a dog and a cucumber as a less typical fruit than a strawberry. This means that some category members are seen as better representatives of the category and according to uniformity that should not be possible. Thus, typicality poses a problem for the classical view of categorization.

Send a message explaining your
needs and Olabade will reply soon.
Contact Olabade
Ready now? Request a lesson.
Start Session
FAQs
What is a lesson?
A lesson is virtual lesson space on our platform where you and a tutor can communicate. You'll have the option to communicate using video/audio as well as text chat. You can also upload documents, edit papers in real time and use our cutting-edge virtual whiteboard.
How do I begin a lesson?
If the tutor is currently online, you can click the "Start Session" button above. If they are offline, you can always send them a message to schedule a lesson.
Who are TutorMe tutors?
Many of our tutors are current college students or recent graduates of top-tier universities like MIT, Harvard and USC. TutorMe has thousands of top-quality tutors available to work with you.