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🔰 Type: Unknown in TypeScript
Using the unknown type promotes type safety, prevents errors, fosters cleaner code, and aids gradual TypeScript adoption.
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🔰 Filtering and Modifying Array Elements in JavaScript
1. Using filter and map methods together.
2. Use the reduce method to achieve both tasks in a single step.
You may want to filter out certain elements while modifying the remaining elements in an array.
In JavaScript, this can be accomplished in the following ways:
1. Using filter and map methods together.
2. Use the reduce method to achieve both tasks in a single step.
📦 Exercise Files
📂 Full description
Hashmaps are a very useful data structure in programming languages. In JavaScript, data is stored in key-value pairs, using hashmaps to allow for quick retrieval of data. In this course, software engineer and web evangelist Tiffany Graves covers what hashmaps are and why they are used. Learn how the built-in functions for hashmaps, get() and set(), offer quick data retrieval, which leads to an optimal time complexity. Explore the relatively optimal space complexity of Hashmaps in JavaScript, as well. Plus, dive into a discussion of hashing and the basics of what a hash function is.
Hashmaps are a very useful data structure in programming languages. In JavaScript, data is stored in key-value pairs, using hashmaps to allow for quick retrieval of data. In this course, software engineer and web evangelist Tiffany Graves covers what hashmaps are and why they are used. Learn how the built-in functions for hashmaps, get() and set(), offer quick data retrieval, which leads to an optimal time complexity. Explore the relatively optimal space complexity of Hashmaps in JavaScript, as well. Plus, dive into a discussion of hashing and the basics of what a hash function is.
