London | 26-ITP-May | Rhoda Ajiroba | Sprint 1 | Structuring and Testing Data - #1560
London | 26-ITP-May | Rhoda Ajiroba | Sprint 1 | Structuring and Testing Data#1560codebyra wants to merge 2 commits into
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codebyra
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@cjyuan, please, I would appreciate it if you could review my sprints for this module |
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@LonMcGregor Please review this too |
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| // num stores a random whole number between 1 and 100. | ||
| // Math.random() generates a random decimal between 0 and 1. | ||
| // Math.floor() rounds the number down to the nearest whole number. | ||
| // Adding minimum ensures the final result is between 1 and 100. |
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Phrases like "a number between X and Y" are not precise enough in a program specification, because they do not clearly state whether the endpoints X and Y are included.
Could you rephrase the descriptions of the range?
Note: We could use the concise and precise interval notation to describe a range of values.
[,]=> inclusion(,)=> exclusion
For example, X is a number in [1, 10) means, X is a number between 1 and 10, including 1 but excluding 10.
| const cardNumber = 4533787178994213; | ||
| const cardNumber = "4533787178994213"; | ||
| const last4Digits = cardNumber.slice(-4); |
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Suppose you were not allowed to modify the statement const cardNumber = 4533787178994213;
(that is, keep the variable's value unchanged).
How would you modify the code (through type conversion) to still being able to use .slice(-4) to extract the last 4 digits from the given number.
| // Read the code and then answer the questions below | ||
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| // a) How many function calls are there in this file? Write down all the lines where a function call is made | ||
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| // b) Run the code and identify the line where the error is coming from - why is this error occurring? How can you fix this problem? | ||
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| // c) Identify all the lines that are variable reassignment statements | ||
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| // d) Identify all the lines that are variable declarations | ||
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| // e) Describe what the expression Number(carPrice.replaceAll(",","")) is doing - what is the purpose of this expression? |
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Could you also answer these questions?
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In question (b), the error occurred because a comma was missing between the a___________s.
What is the programming term that belongs in the blank?
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Self checklist
Changelist
Completed the Sprint 1 mandatory exercises for the Structuring and Testing Data module.
Implemented the required solutions, tested the code to ensure it works correctly, and committed the changes following the sprint requirements.