Coding standards, frameworks, refactoring, and code review (16.9K skills)
Export Three.js scenes, meshes, or geometries as Wavefront OBJ text that other 3D tools can read. The guidance covers world-space transforms, combining geometry, and exporting named scene components as separate parts.
Define kernel constant values, such as ioctl numbers and flags, for syzkaller syzlang descriptions. The guidance covers manual `.const` files and extracting values from kernel headers, plus architecture settings and build checks.
Update Spring Boot 3.2+ code from RestTemplate to the fluent RestClient API. The examples cover GET, POST, and DELETE requests, client bean configuration, status-based error handling, and typed responses for generic data such as lists and maps.
Use this reference to reason about how concurrent database transactions interact. It helps classify conflicts and isolation anomalies, compare protocol families such as locking, MVCC, and OCC, and assess whether a commit or abort is required for correctness.
Organize a Three.js scene into named parts, apply world transforms to mesh geometry, and export each part as an OBJ file. The workflow can also build a URDF model from named links, with deterministic ordering for repeatable output.
Update Spring Security 5 configurations for Spring Security 6 by replacing the adapter-based setup with SecurityFilterChain beans, changing URL matcher and method-security APIs, and converting chained configuration to the lambda DSL. It also highlights authentication manager and servlet namespace changes.
Plan a migration from Spring Boot 2.x to 3.x with guidance on version and Java updates, incompatible dependencies, and javax-to-jakarta changes. The skill includes an OpenRewrite migration example and a checklist for compiling and reviewing the application afterward.
Use this guide to update Java EE imports for a Jakarta EE migration, especially when moving to Spring Boot 3. It maps common packages, shows batch replacement and verification commands, and flags JDK namespaces that should stay unchanged.
Use this skill to answer reflow oven maintenance questions by finding relevant handbook guidance and checking it against thermocouple, MES, or defect data. It supports calculations for temperature profiles, time above liquidus, peak temperatures, and conveyor speed.
Translate Python list, dictionary, and set operations into idiomatic Scala collection code. Compare examples for mapping, filtering, folding, sorting, grouping, aggregation, lookup, and the differences between mutable and immutable collections.
Map common Python modules and idioms to Scala libraries and approaches. Use examples to translate JSON, dates, files, regular expressions, HTTP requests, logging, tests, configuration, command-line arguments, and asynchronous work.
Diagnose Python memory use and reduce a program’s footprint while preserving its behavior. Profile allocations, identify inefficient data structures or leaks, and apply techniques such as generators, chunked processing, smaller object layouts, and optimized numeric types for large datasets.
Translate Python object-oriented code into Scala by mapping classes, dataclasses, inheritance, properties, static and class methods, and common design patterns to Scala constructs. Get concrete examples of equivalent structures and idiomatic alternatives.
Choose and implement ways to distribute parallel tasks across workers, processes, or nodes. It covers fixed and dynamic partitioning, work stealing, and adaptive scheduling to reduce uneven workloads and slow stragglers.
Tune model predictive control (MPC) for tension control in web handling by choosing a prediction horizon and state and control cost weights. Understand how these choices affect disturbance rejection, tracking, actuator effort, response speed, and computation.
Use this guide while building, reviewing, or refactoring React and Next.js apps. Its prioritized rules cover data-fetching waterfalls, bundle size, server and client performance, rendering, and JavaScript, helping identify concrete optimization opportunities.
Add integral action to model predictive control (MPC) so tension tracking can correct steady-state offsets caused by model mismatch. The skill gives update equations, gain and decay guidance, an anti-windup limit for saturation, and an example for multiple tension sections.
Use side-by-side examples to translate common Python constructs into Scala, including variables, types, control flow, comprehensions, functions, formatting, operators, exceptions, and optional values. The guide helps you find an equivalent pattern while converting code between the languages.
Translate Python code into clean, idiomatic Scala by applying immutable values, expression-based code, pattern matching, and safer types. It helps produce Scala that follows common conventions instead of copying Python syntax directly.
Turn sequential Python work into concurrent or parallel code suited to its bottleneck: multiprocessing for CPU-heavy tasks, asyncio or threads for waiting on I/O, and vectorization for array operations. The guidance accounts for shared state, ordering, errors, and resource limits.
Translate Python patterns such as higher-order functions, decorators, closures, and generators into functional Scala. The guide provides examples for pattern matching, Option-based missing values, error handling, lazy sequences, function composition, currying, and type classes.
Plan step tests for identifying an unknown control system. Get practical guidance on test duration, sampling rate, input size, and which input and output measurements to record for estimating system parameters from its response.
Learn how to structure Erlang applications with OTP behaviors: use gen_server for stateful processes, gen_statem for explicit state transitions, gen_event for event handling, and supervisors to restart failed processes.
Manage dependencies in Java projects with Maven by organizing versions and scopes, importing BOMs for shared version control, inspecting dependency trees, and resolving conflicts between direct and transitive dependencies.