std::flip

Summary

The article explores the potential uses of a non-existent C++ function, `std::flip`, drawing from functional programming principles. It illustrates how `std::flip` could simplify tasks like argument reversal and algorithm implementation. The author ultimately reveals the function's fictional status, encouraging readers to appreciate functional programming concepts.

Key Takeaways

1. `std::flip` is a higher-order function that reverses the order of parameters in a Callable.
2. The most common use case for `std::flip` is to flip the two arguments passed to a predicate.
3. `std::flip` can be used to glue together APIs that expose the same information in different orders, such as geodetic systems.

Statement Breakdown

• Claimed Facts: 40% of statements the article presents as facts
• Opinions: 30% of statements classified as editorial or subjective
• Claims: 30% of statements surfaced for additional reader evaluation

Credibility & Bias Reasoning

Credibility assessment: The article is well-structured and provides examples to support its claims about `std::flip`. However, the author admits at the end that `std::flip` does not actually exist in the C++ standard library, which significantly lowers the credibility. The article serves more as a thought experiment and exploration of functional programming concepts.

Bias assessment: Functional Programming Advocacy. The author clearly favors functional programming paradigms and presents `std::flip` as a valuable tool within that context. The article emphasizes the benefits of functional programming concepts like higher-order functions and code composition. While informative, it promotes a specific programming style.

Note: The article discusses a function, std::flip, that the author admits does not exist in the C++ standard library. Treat the content as a conceptual exploration rather than a factual reference.

Credibility flag: Fictional Concept

Claimed Facts (7)

• This is presented as a factual description of the function, although later revealed to be false.
• This is a statement of fact about the Haskell programming language.
• This is a factual statement about the ISO 6709 standard.
• This is a factual statement about the RFC 7946 standard.
• This is a definition of asymmetry in the context of comparisons.
• This is a definition of the 'Rem' measure of presortedness.
• This is a definition of the 'SUS' measure of presortedness.

Opinions (6)

• This is the author's subjective view on the practicality of this use case.
• This is an interpretation of the code's behavior.
• This is the author's opinion on how to handle the reverse operation.
• This is the author's assessment of the function's primary use.
• This is the author's opinion on the simplicity of the example.
• This is the author's overall assessment of the function's utility.

Claims (6)

• While `flip` functions exist in functional languages, claiming `std::flip` (which doesn't exist) finds its roots there is misleading.
• This is a speculative explanation for why many implementations only flip the first two parameters.
• This is a direct admission that the central premise of the article is false.
• This is an appeal to the reader's emotions and a promotion of functional programming.
• This attempts to justify the article's content despite the function's non-existence.
• This is a dismissal of potential doubts about the correctness of the results.

Key Sources

• Author — The Sparkelling Bedangler