node.js2026-11-09
Validate Same-Origin Redirect Destinations in Node.js
Resolve redirect candidates against a fixed origin, reject external destinations, and preserve safety when paths begin with double slashes.
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data-science2026-11-09
Pool Success Rates from Counts Instead of Averaging Percentages
Calculate a denominator-weighted success rate with exact fractions and reject invalid or empty observations.
Read tutorialLinux2026-11-09
Capture Bash Pipeline Failures with PIPESTATUS
Demonstrate how a successful consumer can hide a producer failure and capture per-stage statuses before they are overwritten.
Read tutorialGit2026-11-09
Check Staged Whitespace Before a Git Commit
Use a disposable repository to distinguish working-tree and staged whitespace checks, including an initial commit.
Read tutorialPHP2026-11-09
Preserve JSON Object and Array Shapes in PHP
Keep empty objects distinct from arrays and deliberately reindex filtered lists before JSON encoding.
Read tutorialJava2026-11-09
Reject Malformed UTF-8 with Java CharsetDecoder
Decode complete byte arrays strictly and test malformed, truncated, and overlong UTF-8 sequences on JDK 21.
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Javascript2026-11-09
Reserve an AI Token Budget Before Dispatch in JavaScript
Prevent overlapping requests from spending the same local budget with reservation and one-time settlement.
Read tutorialPython2026-11-09
Build Python Embedding Cache Keys That Include Model Revision
Test cache hits and invalidation using text, embedding revision, dimensions, and preprocessing identity.
Read tutorialAI2026-11-09
Audit RAG Citation Identifiers Before Rendering an Answer
Detect missing and unknown source markers in generated claims without confusing citation presence with factual correctness.
Read tutorialAI2026-11-09
Fuse RAG Retrieval Rankings with Reciprocal Rank Fusion
Combine keyword and vector retrieval rankings with a deterministic, dependency-free Python implementation and fixture tests.
Read tutorialJavascript2026-11-08
Reject Duplicate Singleton Query Parameters in JavaScript
Parse page and repeated tag parameters without silently accepting conflicting page values.
Read tutorialLinux2026-11-08
Count Linux Files Safely When Names Contain Spaces and Newlines
Use find -print0 and a Bash read loop to preserve filenames and accumulate byte counts.
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