[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill:01M6AEN4V6007MSGWRG58HVVYK":3,"skill-same:01M6AEN4V6007MSGWRG58HVVYK":84},{"skillNo":4,"name":5,"nameZh":6,"description":7,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":16,"categories":17,"keywords":18,"publishedAt":35,"linkOnly":36,"markdownContent":37,"markdownBody":38,"frontMatter":39,"refName":42,"commitSha":43,"skillDirectory":44,"forksCount":45,"repositoryHtmlUrl":46,"repositoryHomepageUrl":47,"ownerHtmlUrl":48,"ownerBlogUrl":49,"ownerDescription":50,"updatedAt":51,"install":52,"resources":65},"01M6AEN4V6007MSGWRG58HVVYK","kotlin-coroutines-expert",null,"Expert patterns for Kotlin Coroutines and Flow, covering structured concurrency, error handling, and testing.","davila7\u002Fclaude-code-templates","davila7","https:\u002F\u002Favatars.githubusercontent.com\u002Fu\u002F6216945?v=4","01M6ADEWWFPS191NFM0Y1EX1JH","Daniel Avila","01M6ADJHGM78PHQRD3XZTFDVKK",33481,"MIT","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fdevelopment\u002Fkotlin-coroutines-expert\u002FSKILL.md",[],[19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34],"kotlin coroutines expert","kotlin","kotlin coroutines","coroutines","expert","testing","safe","error handling","flow","concurrency","community","patterns","structured","error","for","2026","2026-11-10 10:12:30",false,"---\nname: kotlin-coroutines-expert\ndescription: \"Expert patterns for Kotlin Coroutines and Flow, covering structured concurrency, error handling, and testing.\"\nmetadata:\n  risk: safe\n  source: community\n  date_added: \"2026-02-27\"\n---\n\n# Kotlin Coroutines Expert\n\n## Overview\n\nA guide to mastering asynchronous programming with Kotlin Coroutines. Covers advanced topics like structured concurrency, `Flow` transformations, exception handling, and testing strategies.\n\n## When to Use This Skill\n\n- Use when implementing asynchronous operations in Kotlin.\n- Use when designing reactive data streams with `Flow`.\n- Use when debugging coroutine cancellations or exceptions.\n- Use when writing unit tests for suspending functions or Flows.\n\n## Step-by-Step Guide\n\n### 1. Structured Concurrency\n\nAlways launch coroutines within a defined `CoroutineScope`. Use `coroutineScope` or `supervisorScope` to group concurrent tasks.\n\n```kotlin\nsuspend fun loadDashboardData(): DashboardData = coroutineScope {\n    val userDeferred = async { userRepo.getUser() }\n    val settingsDeferred = async { settingsRepo.getSettings() }\n    \n    DashboardData(\n        user = userDeferred.await(),\n        settings = settingsDeferred.await()\n    )\n}\n```\n\n### 2. Exception Handling\n\nUse `CoroutineExceptionHandler` for top-level scopes, but rely on `try-catch` within suspending functions for granular control.\n\n```kotlin\nval handler = CoroutineExceptionHandler { _, exception ->\n    println(\"Caught $exception\")\n}\n\nviewModelScope.launch(handler) {\n    try {\n        riskyOperation()\n    } catch (e: IOException) {\n        \u002F\u002F Handle network error specifically\n    }\n}\n```\n\n### 3. Reactive Streams with Flow\n\nUse `StateFlow` for state that needs to be retained, and `SharedFlow` for events.\n\n```kotlin\n\u002F\u002F Cold Flow (Lazy)\nval searchResults: Flow\u003CList\u003CItem>> = searchQuery\n    .debounce(300)\n    .flatMapLatest { query -> searchRepo.search(query) }\n    .flowOn(Dispatchers.IO)\n\n\u002F\u002F Hot Flow (State)\nval uiState: StateFlow\u003CUiState> = _uiState.asStateFlow()\n```\n\n## Examples\n\n### Example 1: Parallel Execution with Error Handling\n\n```kotlin\nsuspend fun fetchDataWithErrorHandling() = supervisorScope {\n    val task1 = async { \n        try { api.fetchA() } catch (e: Exception) { null } \n    }\n    val task2 = async { api.fetchB() }\n    \n    \u002F\u002F If task2 fails, task1 is NOT cancelled because of supervisorScope\n    val result1 = task1.await()\n    val result2 = task2.await() \u002F\u002F May throw\n}\n```\n\n## Best Practices\n\n- ✅ **Do:** Use `Dispatchers.IO` for blocking I\u002FO operations.\n- ✅ **Do:** Cancel scopes when they are no longer needed (e.g., `ViewModel.onCleared`).\n- ✅ **Do:** Use `TestScope` and `runTest` for unit testing coroutines.\n- ❌ **Don't:** Use `GlobalScope`. It breaks structured concurrency and can lead to leaks.\n- ❌ **Don't:** Catch `CancellationException` unless you rethrow it.\n\n## Troubleshooting\n\n**Problem:** Coroutine test hangs or fails unpredictably.\n**Solution:** Ensure you are using `runTest` and injecting `TestDispatcher` into your classes so you can control virtual time.\n","# Kotlin Coroutines Expert\n\n## Overview\n\nA guide to mastering asynchronous programming with Kotlin Coroutines. Covers advanced topics like structured concurrency, `Flow` transformations, exception handling, and testing strategies.\n\n## When to Use This Skill\n\n- Use when implementing asynchronous operations in Kotlin.\n- Use when designing reactive data streams with `Flow`.\n- Use when debugging coroutine cancellations or exceptions.\n- Use when writing unit tests for suspending functions or Flows.\n\n## Step-by-Step Guide\n\n### 1. Structured Concurrency\n\nAlways launch coroutines within a defined `CoroutineScope`. Use `coroutineScope` or `supervisorScope` to group concurrent tasks.\n\n```kotlin\nsuspend fun loadDashboardData(): DashboardData = coroutineScope {\n    val userDeferred = async { userRepo.getUser() }\n    val settingsDeferred = async { settingsRepo.getSettings() }\n    \n    DashboardData(\n        user = userDeferred.await(),\n        settings = settingsDeferred.await()\n    )\n}\n```\n\n### 2. Exception Handling\n\nUse `CoroutineExceptionHandler` for top-level scopes, but rely on `try-catch` within suspending functions for granular control.\n\n```kotlin\nval handler = CoroutineExceptionHandler { _, exception ->\n    println(\"Caught $exception\")\n}\n\nviewModelScope.launch(handler) {\n    try {\n        riskyOperation()\n    } catch (e: IOException) {\n        \u002F\u002F Handle network error specifically\n    }\n}\n```\n\n### 3. Reactive Streams with Flow\n\nUse `StateFlow` for state that needs to be retained, and `SharedFlow` for events.\n\n```kotlin\n\u002F\u002F Cold Flow (Lazy)\nval searchResults: Flow\u003CList\u003CItem>> = searchQuery\n    .debounce(300)\n    .flatMapLatest { query -> searchRepo.search(query) }\n    .flowOn(Dispatchers.IO)\n\n\u002F\u002F Hot Flow (State)\nval uiState: StateFlow\u003CUiState> = _uiState.asStateFlow()\n```\n\n## Examples\n\n### Example 1: Parallel Execution with Error Handling\n\n```kotlin\nsuspend fun fetchDataWithErrorHandling() = supervisorScope {\n    val task1 = async { \n        try { api.fetchA() } catch (e: Exception) { null } \n    }\n    val task2 = async { api.fetchB() }\n    \n    \u002F\u002F If task2 fails, task1 is NOT cancelled because of supervisorScope\n    val result1 = task1.await()\n    val result2 = task2.await() \u002F\u002F May throw\n}\n```\n\n## Best Practices\n\n- ✅ **Do:** Use `Dispatchers.IO` for blocking I\u002FO operations.\n- ✅ **Do:** Cancel scopes when they are no longer needed (e.g., `ViewModel.onCleared`).\n- ✅ **Do:** Use `TestScope` and `runTest` for unit testing coroutines.\n- ❌ **Don't:** Use `GlobalScope`. It breaks structured concurrency and can lead to leaks.\n- ❌ **Don't:** Catch `CancellationException` unless you rethrow it.\n\n## Troubleshooting\n\n**Problem:** Coroutine test hangs or fails unpredictably.\n**Solution:** Ensure you are using `runTest` and injecting `TestDispatcher` into your classes so you can control virtual time.\n",{"name":5,"metadata":40,"description":7},{"risk":25,"source":29,"date_added":41},"2026-02-27","main","2b749c82b5d11fac39d9a6e021ce3f5b8a541bd1","cli-tool\u002Fcomponents\u002Fskills\u002Fdevelopment\u002Fkotlin-coroutines-expert",3931,"https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates","https:\u002F\u002Faitmpl.com","https:\u002F\u002Fgithub.com\u002Fdavila7","https:\u002F\u002Fdanielavila.me","Building AI dev tools with LLMs","2026-11-14 06:14:46",{"source":8,"skillName":5,"commands":53,"prompt":63,"zipAvailable":64},[54,57,60],{"tool":55,"command":56},"npx","npx skills add davila7\u002Fclaude-code-templates --skill kotlin-coroutines-expert",{"tool":58,"command":59},"bunx","bunx skills add davila7\u002Fclaude-code-templates --skill kotlin-coroutines-expert",{"tool":61,"command":62},"pnpm","pnpm dlx skills add davila7\u002Fclaude-code-templates --skill kotlin-coroutines-expert","安装技能，技能地址：https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fdevelopment\u002Fkotlin-coroutines-expert\u002FSKILL.md",true,[66,72,76,80],{"path":67,"resourceType":68,"resourceTypeDesc":69,"sizeBytes":70,"sourceHtmlUrl":71},"reference\u002Fmodel-template.md","REFERENCE","参考文档",3633,"https:\u002F\u002Fgithub.com\u002Fmatheusnorjosa\u002Faprender_sistema\u002Fblob\u002Fmain\u002F.agents\u002Fskills\u002Fdjango-patterns\u002Freference\u002Fmodel-template.md",{"path":73,"resourceType":68,"resourceTypeDesc":69,"sizeBytes":74,"sourceHtmlUrl":75},"reference\u002Fserializer-template.md",4036,"https:\u002F\u002Fgithub.com\u002Fmatheusnorjosa\u002Faprender_sistema\u002Fblob\u002Fmain\u002F.agents\u002Fskills\u002Fdjango-patterns\u002Freference\u002Fserializer-template.md",{"path":77,"resourceType":68,"resourceTypeDesc":69,"sizeBytes":78,"sourceHtmlUrl":79},"reference\u002Ftest-template.md",4666,"https:\u002F\u002Fgithub.com\u002Fmatheusnorjosa\u002Faprender_sistema\u002Fblob\u002Fmain\u002F.agents\u002Fskills\u002Fdjango-patterns\u002Freference\u002Ftest-template.md",{"path":81,"resourceType":68,"resourceTypeDesc":69,"sizeBytes":82,"sourceHtmlUrl":83},"reference\u002Fviewset-template.md",3826,"https:\u002F\u002Fgithub.com\u002Fmatheusnorjosa\u002Faprender_sistema\u002Fblob\u002Fmain\u002F.agents\u002Fskills\u002Fdjango-patterns\u002Freference\u002Fviewset-template.md",[85,116,143,176,211,234],{"skillNo":86,"name":87,"nameZh":6,"description":88,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":89,"categories":90,"keywords":96,"publishedAt":35},"01M70NHBTQ8BV0A2SCAZXEPHCX","wealthville-pool-scoring","Score DeFi liquidity pools before providing liquidity. Returns a 0-100 pool score and an Enter\u002FHold\u002FExit\u002FReduce\u002FAvoid verdict with calibrated confidence for ~68,800 Solana pools and 575 EVM pools, plus a public miss-inclusive track record. Use when asked whether a pool is worth LPing into, which pools look best right now, or how accurate the scores have actually been.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fweb-data\u002Fwealthville-pool-scoring\u002FSKILL.md",[91],{"categoryNo":92,"categoryName":93,"taxonomyType":94,"taxonomyTypeDesc":95},"01JBSEEDCAT000000000000023","Skill与智能体开发","SCENARIO","使用场景",[97,98,99,100,101,33,102,103,104,105,106,107,108,109,110,111,112,113,114,115],"scoring","pool","wealthville pool scoring","liquidity","which","exit","now","use","when","reduce","with","record","track","verdict","evm","solana","how","public","look",{"skillNo":117,"name":118,"nameZh":6,"description":119,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":120,"categories":121,"keywords":123,"publishedAt":35},"01M70MB6VR8ERJ4EM8D5KHBMEV","technical-debt-auditor","Scans a codebase and produces a quantified technical debt report with a prioritized remediation plan. Analyzes dead code, TODO\u002FFIXME\u002FHACK markers, dependency staleness, complexity hotspots, code duplication signals, test coverage gaps, unused exports, and outdated patterns. Use this skill when the user asks to audit their codebase for tech debt, wants a health check of their code quality, says things like \"where should I focus refactoring\", \"find code smells\", \"audit my codebase\", \"what technical debt do we have\", \"prioritize cleanup work\", or asks about code quality metrics. Also trigger when the user mentions \"code rot\", \"legacy cleanup\", \"refactoring priorities\", or wants to understand the overall health of a project before a major effort. Trigger even if the user doesn't say \"technical debt\" explicitly — any request to systematically assess code quality and identify improvement priorities belongs here.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fdevelopment\u002Ftechnical-debt-auditor\u002FSKILL.md",[122],{"categoryNo":92,"categoryName":93,"taxonomyType":94,"taxonomyTypeDesc":95},[124,125,126,127,128,129,130,131,132,133,134,105,135,136,137,138,139,140,141,142],"technical debt","debt","technical","technical debt auditor","auditor","coverage","complexity","markers","project","cleanup","unused","code","todo","work","plan","focus","signals","audit","dependency",{"skillNo":144,"name":145,"nameZh":6,"description":146,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":147,"categories":148,"keywords":158,"publishedAt":35},"01M70KPYH9QNHCNME5GJQGE22K","readonly-sql-guard","Make an agent's database access provably read-only. Use when an agent runs caller-supplied SQL against a production\u002FERP\u002Fanalytics database (a \"query\" MCP tool, text-to-SQL, an admin console), or when reviewing DB-access code for write\u002FDDL\u002Fside-effect\u002Ftransaction-escape risks. Checks what a statement CALLS, not just its shape.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fdatabase\u002Freadonly-sql-guard\u002FSKILL.md",[149,152,153],{"categoryNo":150,"categoryName":151,"taxonomyType":94,"taxonomyTypeDesc":95},"01JBSEEDCAT000000000000010","后端与接口",{"categoryNo":92,"categoryName":93,"taxonomyType":94,"taxonomyTypeDesc":95},{"categoryNo":154,"categoryName":155,"taxonomyType":156,"taxonomyTypeDesc":157},"01JBSEEDCAT000000000000033","数据分析师","PROFESSION","适用职业",[159,160,161,162,163,164,165,33,166,167,168,169,170,171,172,104,173,174,105,175],"readonly","guard","sql guard","sql","readonly sql guard","erp","effect","read-only","db","just","tool","calls","only","MCP","access","database","query",{"skillNo":177,"name":178,"nameZh":6,"description":179,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":180,"licenseFileUrl":181,"sourceHtmlUrl":182,"categories":183,"keywords":187,"publishedAt":35},"01M6AFY6F7CC2BBZP1QD6VTNVC","web-artifacts-builder","Suite of tools for creating elaborate, multi-component claude.ai HTML artifacts using modern frontend web technologies (React, Tailwind CSS, shadcn\u002Fui). Use for complex artifacts requiring state management, routing, or shadcn\u002Fui components - not for simple single-file HTML\u002FJSX artifacts.","Apache-2.0","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Futilities\u002Fweb-artifacts-builder\u002FLICENSE.txt","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Futilities\u002Fweb-artifacts-builder\u002FSKILL.md",[184],{"categoryNo":185,"categoryName":186,"taxonomyType":94,"taxonomyTypeDesc":95},"01JBSEEDCAT000000000000009","前端开发",[188,189,190,191,192,193,194,195,196,197,198,199,200,201,202,203,204,205,206,207,208,209,33,210],"artifacts builder","web","web artifacts builder","artifacts","builder","state","routing","state management","component","css","frontend","ui","Tools","file","components","shadcn","react","Tailwind","suite","jsx","html","single-file","ui components",{"skillNo":212,"name":213,"nameZh":6,"description":214,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":180,"licenseFileUrl":215,"sourceHtmlUrl":216,"categories":217,"keywords":222,"publishedAt":35},"01M6AFWF33SFV9Z3SF4PEEE4BF","webapp-testing","Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fsecurity\u002Fwebapp-testing\u002FLICENSE.txt","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fsecurity\u002Fwebapp-testing\u002FSKILL.md",[218,221],{"categoryNo":219,"categoryName":220,"taxonomyType":94,"taxonomyTypeDesc":95},"01JBSEEDCAT000000000000008","测试与质量",{"categoryNo":185,"categoryName":186,"taxonomyType":94,"taxonomyTypeDesc":95},[223,24,224,225,226,189,227,198,199,228,229,230,231,33,232,107,233],"webapp testing","webapp","browser","playwright","applications","debugging","toolkit","logs","screenshots","local","behavior",{"skillNo":235,"name":236,"nameZh":6,"description":237,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":180,"licenseFileUrl":238,"sourceHtmlUrl":239,"categories":240,"keywords":248,"publishedAt":35},"01M6AF67Q67JJJ5V51JR2P52KA","discernment-nudge","After you give a substantive answer or draft that the user may act on — advice or recommendations, drafted artifacts such as goals, plans, pitches, proposals, or emails, estimates or projections, analysis or interpretation of data, factual claims they may rely on, or a multi-step argument — invoke this skill BEFORE finalizing your reply and then, if it applies, append 2-3 short follow-up questions, each tied to something specific in what you just produced, that help the user check key facts, probe the reasoning or assumptions, and notice missing context. Do this at most once per conversation. Skip it when the user asked a trivial how-to or simple lookup, wants a purely educational explanation, asked you only to format, convert, or assemble a file from content they provided, is writing code they will run, is doing creative writing or casual chat, or already asked you to double-check, cite, or review — the skill file explains these boundaries and the exact output format.","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fproductivity\u002Fdiscernment-nudge\u002FLICENSE.txt","https:\u002F\u002Fgithub.com\u002Fdavila7\u002Fclaude-code-templates\u002Fblob\u002Fmain\u002Fcli-tool\u002Fcomponents\u002Fskills\u002Fproductivity\u002Fdiscernment-nudge\u002FSKILL.md",[241,244,245],{"categoryNo":242,"categoryName":243,"taxonomyType":94,"taxonomyTypeDesc":95},"01JBSEEDCAT000000000000018","写作与文案",{"categoryNo":92,"categoryName":93,"taxonomyType":94,"taxonomyTypeDesc":95},{"categoryNo":246,"categoryName":247,"taxonomyType":156,"taxonomyTypeDesc":157},"01JBSEEDCAT000000000000036","内容创作者",[249,250,251,252,253,254,255,256,191,257,201,135,258,259,260,261,262,171,263,105,264,265,266,267,268,113,269],"discernment nudge","nudge","interpretation","help","run","reasoning","data","writing","lookup","content","review","conversation","short","up","invoke","you","analysis","claims","argument","assemble","recommendations"]