technical-writer（技术作家）

Technical Writer

For README-specific patterns (hero, TL;DR, quick start), see readme-craft skill.

Content Types & Writing Guidelines

1. Concept Explanation

Build mental models for abstract ideas.

# [Concept Name]

## The Problem It Solves

[Concrete scenario where this matters - make the reader FEEL the pain]

## The Core Idea

[One paragraph, one analogy, zero jargon]

## How It Works

[Visual or step-by-step breakdown]

### Step 1: [First thing that happens]
### Step 2: [Next thing]
### Step 3: [Result]

## In Practice

[Code example with annotations]

## Common Misconceptions

- **Myth:** [What people wrongly believe]
- **Reality:** [What's actually true]

## When NOT to Use This

[Explicit boundaries - this builds trust]

Opening example:

Bad: "Dependency injection is a design pattern where..." Good: "Your class needs a database connection. Do you create it inside the class, or pass it in from outside? This choice determines whether your code is testable or a nightmare."

Voice: "This works because..." not "As you can see...". "You might expect X, but actually Y" not "Obviously...". Never "simply" or "just" (these dismiss difficulty).

2. How-To Guide

Get the reader from A to B with minimum friction.

# How to [Accomplish Specific Goal]

**Time:** X minutes | **Difficulty:** Beginner/Intermediate/Advanced

## What You'll Build

[Screenshot or description of end result]

## Prerequisites

- [Specific tool/version]
- [Knowledge assumed]

## Steps

### 1. [Action verb] [Object]

[Why this step matters - one sentence]

[Exact command or code]

**Expected result:** [What they should see]

### 2. [Next action]

[Continue pattern]

## Verify It Works

[Test command or manual verification]

## Troubleshooting

### [Error message or symptom]

**Cause:** [Why this happens] **Fix:** [Exact solution]

## Next Steps

- [Related guide]
- [Advanced topic]

Rules: One action per step. Every step has expected output. Code is copy-paste ready.

3. Tutorial (Teaching Through Building)

Teach concepts by building something real.

# Build [Something Concrete]

## What You'll Learn

By the end, you'll understand:
- [Concept 1]
- [Concept 2]
- [Concept 3]

## The Project

[Description of what we're building and why it's useful]

## Part 1: [Foundation]

### The Concept

[Brief explanation of the underlying idea]

### Implementing It

[Code with inline explanation]

### What Just Happened

[Reinforce the concept with what they just did]

## Part 2: [Build on Foundation]

[Repeat pattern, each part introducing one new concept]

## Recap

| Concept | Where We Used It |
|---------|------------------|
| [Concept 1] | Part 1 - [specific code] |
| [Concept 2] | Part 2 - [specific code] |

## Challenges

1. **[Easy extension]** - [Hint]
2. **[Medium extension]** - [Hint]
3. **[Hard extension]** - [Hint]

Rules: One concept per section. Build something that actually works. Show mistakes and corrections. Include checkpoints to verify progress.

4. Deep Dive / Technical Article

Comprehensive exploration for mastery-level readers.

# [Topic]: A Deep Dive

**Reading time:** X minutes | **Audience:** [Intermediate/Advanced] developers

## TL;DR

[3-5 bullet points covering the key insights]

## The Landscape

[Context: what exists, what problem space we're in]

## How [Thing] Actually Works

### Under the Hood

[Technical explanation with diagrams/code]

### The Tradeoffs

| Approach | Pros | Cons | Use When |
|----------|------|------|----------|
| A | | | |
| B | | | |

## Real-World Patterns

### Pattern 1: [Name]

[Code example from production-quality source]

## Common Pitfalls

### Pitfall 1: [Name]

**The mistake:**

[Bad code]

**The fix:**

[Good code]

**Why:** [Explanation]

## Further Reading

- [Resource 1] - [What it covers]

Code Examples

Every code block needs:

1. Context (what file, what situation)
2. Working code (not pseudocode unless explicitly stated)
3. Key lines highlighted or annotated

# user_service.py - handling authentication

def authenticate(self, credentials):
    user = self.repository.find_by_email(credentials.email)
    if not user:
        return AuthResult.failure("User not found")  # <- Early return pattern

    if not user.verify_password(credentials.password):
        return AuthResult.failure("Invalid password")

    return AuthResult.success(user)  # <- Only success path reaches here

Explaining code: Bad: "This code authenticates the user." Good: "We check for failure conditions first (lines 4-8), returning early. Only valid credentials reach the success path on line 10. This 'guard clause' pattern keeps the happy path unindented."

Analogies

Bridge unfamiliar concepts to familiar ones:

Rules: Map key properties (not just surface similarity). Acknowledge where the analogy breaks down. Use familiar domains (not other technical concepts).

Handling Complexity

1. Start with the simple case - "In the basic scenario, X happens"
2. Add one complication - "But what if Y?" Show how the solution adapts
3. Show the full picture - "In production, you'll also handle Z"

Common Failures

Quality Checklist

Structure:

• Opens with WHY (motivation)
• Progressive complexity (simple -> complex)
• Each section provides standalone value

Code:

• All code is tested and works
• Copy-paste ready (no hidden dependencies)
• Key lines annotated

Clarity:

• No undefined jargon
• Analogies for abstract concepts
• Explicit prerequisites listed

Trust:

• Acknowledges limitations
• Shows when NOT to use this approach

Anti-Patterns

5. System Documentation (Architecture Guides)

For comprehensive technical docs that capture the "what" and "why" of complex systems.

Documentation Process

1. Discovery - Analyze codebase structure, dependencies, design patterns, data flows
2. Structuring - Create logical hierarchy, plan progressive disclosure, establish terminology
3. Writing - Executive summary first, then high-level architecture to implementation details

Key Sections to Include

System Docs Best Practices

• Always explain the "why" behind design decisions
• Use concrete examples from the actual codebase
• Create mental models that help readers understand the system
• Document both current state and evolutionary history
• Include troubleshooting guides and common pitfalls
• Provide reading paths for different audiences (developers, architects, operations)

Reference

• Sentence Structures - Intro, transition, caveat, and reinforcement phrases