WordPress Developers Share Custom is_child() Function for Advanced Navigation

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A developer notes that WordPress lacks a built-in is_child() conditional tag, which advanced theme builders need for sidebar navigation showing the next level of child pages. The article provides a custom function that checks whether the current page's parent matches a given page ID, slug, or title. The function is added to a theme's functions.php file and can be called with any of these identifiers. For deeper page hierarchies, the author suggests an is_ancestor() function that checks the post's ancestors list. A further, untested version checks whether a post is either a child or an ancestor of a specified page ID.

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MIT Researchers Use an LLM to Read and Edit Neural Network Weights Directly

MIT CSAIL researchers Rikiya Takehi, Jayden Teoh, Alex Zhang, and Omar Khattab published a November 2026 study called "Sparks of Weight-Space Programming" on having a general-purpose language model work directly with neural network parameters. In one case, the model repaired a repetition-loop problem in the small open model Qwen3.5-0.8B by modifying only about 0.016% of its weights, with no gradient descent or training data. The edit lifted scores on MATH-500, GSM8K, and IFEval substantially. The authors also tested whether the model could identify what games four small policies were trained to play by reading their raw weights, and it correctly named all four. The work challenges the assumption that weights can only be written by optimizers, though the authors report failure cases alongside their successes.

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ProgrammingDEV Community ·

Tracking company hiring trends with Greenhouse and Lever public job APIs

Many companies host their careers pages on Greenhouse or Lever, which both offer documented, read-only APIs for job boards. Analysts can use this data to see which companies are hiring, for which teams, and how quickly openings are changing, with applications for sales prospecting, investor research, and job alerts. The article demonstrates pulling this information with a short Python script, avoiding HTML scraping and personal data collection. It also explains how to track only newly posted roles between runs and schedule recurring checks. The author discloses that their company built the Actor used in the examples, and that the sample figures come from a real run.

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ProgrammingDEV Community ·

Author builds five Valheim mods using AI models without prior coding experience

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ProgrammingDEV Community ·

Guide Shows Java Developers How to Move Claude API Prototypes into Production

A developer guide explains how Java teams can move from chat-based Claude demos to production-grade backend features. It notes that model calls introduce remote-dependency concerns such as latency, rate limits, timeouts, and failure modes, along with the need to validate probabilistic output and protect customer data. The article outlines the Claude Messages API, including the required headers and the choice of model size for different tasks. It then walks through a minimal Java 21 client built on the standard HttpClient, with later sections covering structured output, tool use, error handling, and operational concerns.

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