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Know your Java? by Venkat Subramaniam
Explore the power of Java through type inference, immutability, lazy evaluation, and code reviews, and learn how to write correct, cute, and maintainable code.
- Type inference is useful, but requires careful consideration to ensure correctness: The speaker emphasizes the importance of understanding type inference in Java, but warns against blindly relying on it, as it can lead to incorrect results.
- Immutability is a key concept in functional programming: The speaker highlights the benefits of immutability, including the ability to safely make copies of collections and avoid shared mutability.
- Lazy evaluation is essential for efficiency: The speaker stresses the importance of lazy evaluation in functional programming, which allows for efficient computation by delaying the evaluation of intermediate results.
- Code reviews are crucial for maintainable code: The speaker emphasizes the importance of code reviews in ensuring maintainable code, and encourages developers to practice typing and reviewing code regularly.
- Type inference can lead to unexpected results: The speaker provides examples of how type inference can lead to unexpected results, such as incorrect output or runtime errors.
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Immutable collections are a better choice than mutable ones: The speaker recommends using immutable collections, such as
ListandMap, instead of mutable ones, as they provide a safer and more predictable way of working with data. - Shared mutability can lead to unexpected behavior: The speaker warns against shared mutability, which can lead to unexpected behavior and errors, and encourages developers to use immutable collections instead.
- Code should be both correct and cute: The speaker emphasizes the importance of writing code that is not only correct but also easy to read and understand, using the example of a “cute” piece of code that is also correct.
- Java is a mature language with many features: The speaker highlights the many features and improvements in Java, including type inference, lazy evaluation, and immutable collections.