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  • Implementing wc command – Rust coding challenges

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    This is the second post of the Rust coding challenges series, in which we will learn computer science fundamentals and write some actual code to make usable programs. In this […]

  • Implementing the LRU cache

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    A cache is a component that stores data temporarily so that further requests can be served faster. For example, the search engine might store the result from users’ queries in […]

  • What is Java CLASSPATH?

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    Classpath is a fundamental concept that has been oblivious to many of us, especially when working with modern IDEs like IntelliJ IDEA; we don’t have to worry much about classpaths […]

  • Things I’ve learned from Effective Java – Part 1

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    In this series, I want to introduce one of the most-read books in Java programming: Effective Java. For the most part, this book focuses on the most fundamental classes and […]

  • Dependency Injection: The Basic

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    To start the article, let’s first look at the code below: As we can see, class MonitoringService depends on class NotificationSender to function, and we’ve initialized class NotificationSender directly inside […]

  • Dijkstra’s algorithm to find the shortest path

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    Let’s imagine you and your best friend live quite far apart, you haven’t seen him for a while, your best friend is organizing a party at his house and you’re […]

  • Implementing retries with exponential backoff

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    Making a call to an external service might fail for a lot of reasons, sometimes it’s due to network failure, sometimes it’s because the external service is too busy, or […]

  • Executing tasks with the Executor Framework in Java

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    Java offers us many ways to write multi-threading applications, at the early stage, we probably create a new thread for each task by manually extending the Thread class, this seems […]

  • AOC 2022 – Day 5: Supply Stacks

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    You can read the full description for day 5 here. In summary for part 1, we have been provided a number of stacks, each stack may contain a number of […]

  • WebRTC – Go beyond the APIs Part 1: Signaling and Connecting

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    We were in the middle of the pandemic. Many of us have to get accustomed to the new norm, stay at home to work and study, etc.…We are separated and […]