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React Tic Tac Toe

Congratulations! You're submitting your assignment. Please reflect on the assignment with these questions.

Reflection

Prompt Response
How are events / event handlers and useState connected? Event handlers "listen" for events such as button clicks, hovering over an element, etc. useState can keep track of the "state" of a component. Using them together, you can trigger an event which does something depending on the value of useState.
What are two ways to do "dynamic styling" with React? When should they be used? You can add dynamic styling in-line on an element, or in an external style sheet. External style sheets are recommended as a best practice to keep the responsibilities separate.
Much like Rails works with the HTTP request->response cycle, React works with the browser's input->output cycle. Describe React's cycle from receiving user input to outputting different page content. React listens for browser input and then checks that against the data it has stored. It finds the component that was updated using the key, and dynamically updates that component.

CS Fundamentals Questions

Question Answer
What do you think is the BigO complexity of the method you use to compute a winner? For time complexity, O(1) since it consistently has to go through all three rows/all nine squares and is not dependent on the input - therefore it is constant. For space complexity, also O(1) since it always creates two arrays and two helper functions.
Consider what happens when React processes a state change from setState -- it must re-render all of the components that now have different content because of that change.
What kind of data structure are the components in, and what sort of algorithms would be appropriate for React's code to "traverse" those components?
Speculate wildly about what the Big-O time complexity of that code might be.
The squares are in an array of arrays, so the code must go through nested for each loops to re-render the data when a square is clicked. So I would guess this would be O(n^2) - but the data is always going to be the same size, so does that make it constant? O(1)?

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Great job! Your code was clean and concise!

@kaidamasaki
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React Tic Tac Toe

Major Learning Goals/Code Review

Criteria yes/no, and optionally any details/lines of code to reference
Demonstrates proper JavaScript coding style. ✔️
Correctly passes props to child components. ✔️
Correctly passes callback functions to child components and calls them to respond to user events.) ✔️
Maintains the status of the game in state. ✔️
Practices git with at least 6 small commits and meaningful commit messages ✔️
Uses existing stylesheets to render components ✔️

Functional Requirements

Functional Requirement yes/no
The Square component renders properly and executes the callback on a click event. ✔️
The Board component renders a collection of squares ✔️
The App component renders a board and uses state to maintain the status of the game. ✔️
Utilizes callbacks to UI events to update state ✔️

Overall Feedback

Overall Feedback Criteria yes/no
Green (Meets/Exceeds Standards) 5+ in Code Review && 3+ in Functional Requirements ✔️
Yellow (Approaches Standards) 4+ in Code Review && 2+ in Functional Requirements, or the instructor judges that this project needs special attention
Red (Not at Standard) 0-3 in Code Review or 0,1 in Functional Reqs, or assignment is breaking/doesn’t run with less than 5 minutes of debugging, or the instructor judges that this project needs special attention

Code Style Bonus Awards

Was the code particularly impressive in code style for any of these reasons (or more...?)

Quality Yes?
Perfect Indentation
Elegant/Clever
Descriptive/Readable
Concise
Logical/Organized

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2 participants