Introduction Last time we discussed our mission, built a lexer and tree printer to be used throughout our experiments, and introduced the Recursive decent parser. Parsing mathematical expressions involves interpreting their structure, which can be complex due to the presence of operators with different precedence levels and associativity rules. In this article series, we delve into
In the context of Abstract Syntax Trees (ASTs) and parse trees, the terms “higher” and “lower” precedence, as well as tree “depth,” take on a different meaning due to the way parsers traverse the tree structure. In this context, “higher” precedence refers to nodes that are deeper in the tree, further away from the root. When parsers descend into the tree to evaluate expressions or execute algorithms, they typically start at the root and move downwards towards the leaves. Therefore, nodes that are deeper in the tree, or have a higher depth, are processed first, followed by nodes closer to the root. Conversely, nodes closer to the root have lower depth and are processed later in the parsing or evaluation process. This understanding is crucial for parsers and algorithms that rely on tree traversal to correctly interpret and evaluate expressions or perform other operations on tree structures. I have heard these terms used in reverse and for trees in general, this may be correct. I mention this because it can cause confusion, it is worth clarifying these terms when conversing with others.
In the world of software development, understanding the differences between Class-Based OOP and Prototype-Based OOP is essential. While Class-Based OOP provides structure and clarity, Prototype-Based OOP offers flexibility and dynamic behavior. Let’s delve deeper into these two programming paradigms and explore their characteristics, examples, and implications in real-world scenarios.
Explore the evolution of C– – an intermediate language designed for compiler and language research. Delve into its origins, syntax, and the significance it holds in the realm of programming languages and compiler development.
Discover the resurgence of the BASIC programming language and its impact on the software development landscape. From the nostalgia-driven return of retired developers to the passion of retro computing enthusiasts, this article explores the enduring legacy of BASIC and envisions new possibilities for a language that once sparked the home computer revolution.
I recently read a post where the author recounted an interview experience where the interviewer questioned his use of a class attribute. The interviewer didn’t believe that an attribute defined at the class level was valid Python syntax. The poster, confident in the validity of the syntax, admitted that he misunderstood what the code he
Delve into the evolution of C programming, from historical changes to embracing new features like C11. Explore its enduring usefulness in modern software development and understand its impact on programming languages and the fast-paced world of technology.
Delve into the nuanced debate between Haskell and C programming languages. This article dissects the claims about Haskell’s speed superiority over C, emphasizing the importance of well-crafted code and developer expertise in determining programming efficiency. Discover the complex interplay of factors that influence the performance of these languages in real-world applications.