core▌

Core principle: Core Data is a mature object graph and persistence framework. Use it when needing features SwiftData doesn't support, or when targeting older iOS versions.

Discipline skill for Core Location implementation decisions. Prevents common authorization mistakes, battery drain, and background location failures.

Symptom-based troubleshooting for Core Location issues.

Use components from your core library instead of raw platform components. This ensures consistent styling and behavior.

This document outlines the architecture and mental model for packages/core, the heart of the Angular framework.

Core patterns and configuration for AWS SDK for Java 2.x service clients, authentication, and HTTP management. \n \n Covers client builder patterns, credential provider chains (environment variables, profiles, IAM roles, SSO), and lifecycle management with try-with-resources \n Supports Apache HTTP client for sync operations and Netty for async, with connection pooling, timeout configuration, and SSL optimization \n Includes Spring Boot integration with @ConfigurationProperties , bean definition

Convert dbt Core projects into Airflow DAGs or TaskGroups using Astronomer Cosmos. \n \n Supports three assembly patterns: standalone DbtDag, DbtTaskGroup within existing DAGs, and individual Cosmos operators for fine-grained control \n Choose from eight execution modes (WATCHER, LOCAL, VIRTUALENV, KUBERNETES, AIRFLOW_ASYNC, and others) based on isolation and performance needs \n Offers three parsing strategies (dbt_manifest, dbt_ls, dbt_ls_file, automatic) to balance speed and selector complexi

When writing readable Go code, apply these principles in order of importance:

Read and write NFC tags on iPhone using the CoreNFC framework. Covers NDEF reader sessions, tag reader sessions, NDEF message construction, entitlements, and background tag reading. Targets Swift 6.3 / iOS 26+.

Read device sensor data -- accelerometer, gyroscope, magnetometer, pedometer, and activity recognition -- on iOS and watchOS. CoreMotion fuses raw sensor inputs into processed device-motion data and provides pedometer/activity APIs for fitness and navigation use cases. Targets Swift 6.3 / iOS 26+.