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Visitor pattern and dynamic dispatch

The Design Patterns book by the infamous Gang of Four contains 23 object oriented design patterns. Some of them are kind of obvious (Adapter), or have become common knowledge since the book was published in 1994 (Iterator). My personal favourite is Visitor. Visitor "represents an operation to be performed on the elements of an object structure. Visitor lets you define a new operation without changing the classes of the elements on which it operations" [except you need to add an... full post»
by Mark,

Analyzing a single, trivial Java statement

Java isn't a bad language, but it is also not great, and it's age shows. Let's look at this simple Java statement: if (!Boolean.TRUE.equals(getIsRequired())) { It's very simple and common, and yet it includes a lot of the things I don't particularly like about Java: We need a getter for a trivial property access. I like the Python way with @property, or the Kotlin way with getters and setters being called implicitly. It is not explicit that getIsRequired is a... full post»
by Mark,

The markv.nl blag!

#imadethis, #coding, #tools, #bash, #python, #programming-languages, #ubuntu, #music, #django, #machine-learning, #chinese, #design-patterns, #charity, #javascript, #learning, #object-oriented-programming, #discussion, #java, #focus, #fortran, #backup, #bug-prevention, #type-systems, #order-of-magnitude, #R, #personal, #cross-validation, #china, #what-I-use, #data-science, #data-analysis, #effecive-altruism, #book, #games, #travel, #rust

Comments

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