Change Risk Anti-Patterns (CRAP) is a metric suite coined to flag maintainability and testing risk in code by combining cyclomatic complexity and test coverage into a single score. The original CRAP1 formula computes a method score as comp(m)^2 * (1 - cov(m)/100)^3 + comp(m) and marks methods above 30 as "CRAPpy." The formula was derived empirically by fitting to many Java projects and their tests and validated against developers’ subjective judgments. The rationale is practical: highly complex methods that lack automated tests are harder to change safely, while good coverage usually signals testability and thoughtfulness in design. CRAP1 became popular, especially in agile circles, and was ported into multiple languages and tools (Cobertura, Clover, Crap4J and variants).
CRAP1 is explicitly pragmatic rather than complete: it can be gamed by superficial tests, some complexity is unavoidable, and the metric does not yet include higher-level design measures like cohesion or coupling. Adoption spawned numerous ports and integrations across ecosystems, though some plugins aged poorly and required maintenance (notably Java 7 incompatibilities). Further work is planned to expand CRAP beyond this single anti-pattern, with guidance intended to help teams identify, reduce, and resist low-quality code.
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Google has developed the first vectorized implementation of Quicksort, a sorting algorithm that leverages SIMD instructions for improved performance. This approach is useful for tasks like building histograms by efficiently sorting large lists of numbers. (opensource.googleblog.com)
Small programming tricks, such as using fuzzy search with ctrl + r or leveraging SQL features like SELECT without FROM, can significantly boost productivity. These nuggets of knowledge are simple to learn and can make everyday coding tasks more efficient. (will-keleher.com)
ManyBot is a modular framework for building WhatsApp bots using plugins, allowing easy addition and removal of features. It is built as an abstraction over Baileys, focusing on simplicity, extensibility, and community collaboration. (manybot.org)
Delta replaces traditional pull requests by enabling real-time collaboration with agents, allowing team members to work directly within shared worktrees. It supports code review through dedicated subthreads, making collaboration more seamless and context-aware. (zed.dev)
A Norwegian playground safety standard uses climbing as a safety feature by slowing down ascent to allow adult intervention, and a similar principle applied in software development. Climbing in software, such as deploying and troubleshooting, served as an unspoken indicator of competence and understanding. (cekrem.github.io)
Replacing GitHub's actions/setup-go with cloudx-io/setup-go reduced Golang CI job runtimes by 69%, significantly improving speed. The new approach leverages build cache more effectively, especially for parallel jobs, and is open-sourced for others to use. (cloudx.ai)
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