Curated bank of interview problems organized by company, pattern, and difficulty. Provides problem recommendations, coverage tracking, weak area identification, and premium problem alternatives for FAANG interview preparation.
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Drive feature development using Outside-In TDD with Hexagonal Architecture. Design emerges through inline code, in-memory fakes, interface extraction, and deferred I/O. Use when building features, writing tests, or structuring backend services. Triggers on: TDD, outside-in, hexagonal, ports and adapters, emergent design, acceptance test, component test, walking skeleton, in-memory fakes, component, contract test, adapter, fast tests, sub-second feedback. Language-agnostic (Go, Rust, Python, TypeScript, Java, C#).
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Provide number theory algorithm implementations and guidance
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Integrate database drivers and connectors — connection pooling, query builders, ORM configuration, and multi-database abstraction layers.
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Generate Bubble Tea (Go) TUI application structure with models, commands, and views using the Elm architecture.
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Generate Chocolatey package for Windows CLI distribution.
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Generate Commander.js CLI project structure with TypeScript, commands, options, and best practices. Creates a complete scaffolded CLI application ready for development.
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Set up snapshot testing for CLI output with update workflows and diff reporting.
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Compare multiple solutions for correctness and performance
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Build and query suffix arrays and related structures
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Implement email and push notification delivery systems — transactional email, notification templates, delivery tracking, and bounce handling.
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Configure code signing for macOS and Windows binaries with notarization.
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Identify and verify loop invariants for correctness proofs
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Implement computational geometry algorithms
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Work with Rust async runtimes — Tokio, async-std, executor internals, pinning, wakers, and building high-performance async Rust services.
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Set up cosmiconfig for hierarchical configuration loading from multiple sources and formats.
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Generate Cobra/Viper-based Go CLI applications with persistent flags, subcommands, and configuration management. Creates production-ready Go CLI with modern patterns.
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Configure cross-env for cross-platform environment variable setting in npm scripts and CLI commands.
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Generate comprehensive test cases including edge cases, stress tests, and counter-examples for algorithm correctness verification. Supports random generation, constraint-based generation, and brute force oracle comparison.
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Simulate realistic coding interview experience
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Generate bash script templates with best practices including error handling, argument parsing, logging, and portability considerations.
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Interface with Codeforces API for contest data, problem sets, and submissions
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SetFit few-shot learning for efficient intent classification with minimal data
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Zep memory server integration for long-term conversation memory and user profiling
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