[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"me":3,"catalog:en:mobile\u002Fflutter":4,"config":211},null,{"field_key":5,"field_name":6,"seniority":7,"topic_key":7,"topic_name":7,"spec_key":8,"spec_name":9,"locale":10,"cell_total":11,"field_total":12,"seniorities":13,"topics":17,"specs":115,"samples":126},"mobile","Mobile","","flutter","Flutter","en",450,2400,[14,15,16],"junior","mid","senior",[18,22,25,28,31,34,37,40,43,46,49,52,55,58,61,64,67,70,73,76,79,82,85,88,91,94,97,100,103,106,109,112],{"key":19,"name":20,"count":21},"fl-dart-async-isolates","Fl Dart Async Isolates",75,{"key":23,"name":24,"count":21},"fl-dart-language-null-safety","Fl Dart Language Null Safety",{"key":26,"name":27,"count":21},"fl-flutter-persistence-storage","Fl Flutter Persistence Storage",{"key":29,"name":30,"count":21},"fl-flutter-platform-channels-lifecycle","Fl Flutter Platform Channels Lifecycle",{"key":32,"name":33,"count":21},"fl-flutter-rendering-widget-tree","Fl Flutter Rendering Widget 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Lifecycle",{"key":98,"name":99,"count":21},"rn-javascript-typescript-fundamentals","Rn Javascript Typescript Fundamentals",{"key":101,"name":102,"count":21},"rn-native-bridge-modules","Rn Native Bridge Modules",{"key":104,"name":105,"count":21},"rn-navigation-lifecycle","Rn Navigation Lifecycle",{"key":107,"name":108,"count":21},"rn-networking-persistence-offline","Rn Networking Persistence Offline",{"key":110,"name":111,"count":21},"rn-performance-rendering","Rn Performance Rendering",{"key":113,"name":114,"count":21},"rn-react-hooks-state-management","Rn React Hooks State Management",[116,119,120,123],{"key":117,"name":118,"count":11},"android-kotlin","Android (Kotlin)",{"key":8,"name":9,"count":11},{"key":121,"name":122,"count":11},"ios-swift","iOS (Swift)",{"key":124,"name":125,"count":11},"react-native","React Native",[127,145,158,172,185,198],{"id":128,"topic":20,"difficulty":129,"body":130,"options":131,"correct_key":142,"explanation":144},"019fa93e-4dd9-78cb-996f-ee451207a7f0",1,"What does an `async` function in Dart return, even if you don't write it explicitly?",[132,135,138,141],{"key":133,"text":134},"a","Nothing — `async` functions are always `void`.",{"key":136,"text":137},"b","A `Stream` of the function's result over time.",{"key":139,"text":140},"c","The raw result value, computed synchronously.",{"key":142,"text":143},"d","A `Future` wrapping the function's result.","Marking a function `async` makes it return a `Future` (or `Future\u003Cvoid>`) automatically, even if the body has no explicit `Future` type — the compiler wraps the result.",{"id":146,"topic":20,"difficulty":129,"body":147,"options":148,"correct_key":139,"explanation":157},"019fa93e-4de3-7552-9fe1-a65436007e76","```dart\nFuture\u003Cint> fetchValue() async {\n  await Future.delayed(Duration(seconds: 1));\n  return 42;\n}\n```\nWhat happens when `fetchValue()` is called?",[149,151,153,155],{"key":133,"text":150},"It blocks the calling code for one second before returning.",{"key":136,"text":152},"It returns `42` immediately and runs the delay in the background afterward.",{"key":139,"text":154},"It returns a `Future\u003Cint>` immediately, resolving to `42` after the delay.",{"key":142,"text":156},"It throws unless the caller also uses `await`.","Calling an async function does not block; it returns a pending `Future` right away. The caller can `await` it (or attach `.then`) to get `42` once the delayed future completes.",{"id":159,"topic":20,"difficulty":160,"body":161,"options":162,"correct_key":133,"explanation":171},"019fa93e-4de5-7423-a342-d2d648831251",2,"A function does `final a = await taskA(); final b = await taskB();` where `taskA` and `taskB` are independent (don't depend on each other's result). What is the practical downside of writing it this way?",[163,165,167,169],{"key":133,"text":164},"`taskB` doesn't start until `taskA` finishes — they run sequentially.",{"key":136,"text":166},"Dart will refuse to compile this — independent awaits must use `Future.wait`.",{"key":139,"text":168},"`taskA` and `taskB` are automatically parallelized regardless of the syntax.",{"key":142,"text":170},"The code throws a runtime exception because `b` is declared before `a` resolves.","Each `await` pauses until that specific future completes before moving to the next line. Since `taskB()` isn't even called until after `taskA` finishes, they run one after another; `Future.wait([taskA(), taskB()])` would let both start immediately.",{"id":173,"topic":20,"difficulty":129,"body":174,"options":175,"correct_key":133,"explanation":184},"019fa93e-4de6-7803-ac40-413391adb937","What is the key structural difference between a single-subscription `Stream` and a broadcast `Stream`?",[176,178,180,182],{"key":133,"text":177},"A single-subscription stream allows only one listener over its lifetime, while a broadcast stream allows multiple listeners.",{"key":136,"text":179},"Broadcast streams can only emit errors, never data.",{"key":139,"text":181},"Single-subscription streams emit events synchronously, broadcast streams never do.",{"key":142,"text":183},"There is no real difference; `.asBroadcastStream()` is purely cosmetic.","A single-subscription `Stream` buffers\u002Fproduces events only once a single listener attaches, and calling `.listen()` twice throws. A broadcast stream supports any number of listeners, but doesn't buffer events for listeners that attach late.",{"id":186,"topic":20,"difficulty":160,"body":187,"options":188,"correct_key":139,"explanation":197},"019fa93e-4de7-72b0-81e7-a1690ffca797","```dart\nfinal controller = StreamController\u003Cint>();\ncontroller.stream.listen((v) => print(v));\ncontroller.add(1);\ncontroller.add(2);\n```\nWhat does this print, assuming no errors?",[189,191,193,195],{"key":133,"text":190},"Nothing, because `StreamController` requires `.broadcast()` to emit any events.",{"key":136,"text":192},"`2` then `1`, because the listener attaches after both `add` calls are scheduled.",{"key":139,"text":194},"`1` then `2`, in that order.",{"key":142,"text":196},"It throws because `add` was called before `listen`.","A default `StreamController` is single-subscription; since `listen` is called before any `add`, the controller has a listener ready and delivers events in the order they were added: 1, then 2.",{"id":199,"topic":20,"difficulty":129,"body":200,"options":201,"correct_key":136,"explanation":210},"019fa93e-4de7-7bca-9530-13003c1b49ad","Why does Dart require actual parallel CPU-bound work to use an `Isolate` instead of just an `async` function?",[202,204,206,208],{"key":133,"text":203},"`async` functions are physically incapable of calling any CPU-heavy code at all.",{"key":136,"text":205},"A single Dart isolate has one thread and one event loop; `async`\u002F`await` doesn't use extra cores.",{"key":139,"text":207},"Isolates are just a different syntax for the exact same single-threaded execution as `async`.",{"key":142,"text":209},"`async` functions can only run inside widget build methods.","`async`\u002F`await` gives concurrency (interleaving) on a single thread, not parallelism. Heavy synchronous computation still blocks that one thread and the event loop with it. An `Isolate` gets its own thread and memory, enabling true parallel execution.",{"fields":212,"seniorities":388,"interview_shapes":389,"locales":394,"oauth":396,"question_count":399,"coach_enabled":400,"jd_match_enabled":400},[213,238,258,275,299,312,331,340,362,369,375,382],{"key":214,"name_tr":215,"name_en":215,"sort":129,"specializations":216},"backend","Backend",[217,220,223,226,229,232,235],{"key":218,"name":219,"field":214},"general","Genel",{"key":221,"name":222,"field":214},"go","Go",{"key":224,"name":225,"field":214},"python","Python",{"key":227,"name":228,"field":214},"java","Java",{"key":230,"name":231,"field":214},"csharp","C#\u002F.NET",{"key":233,"name":234,"field":214},"nodejs","Node.js",{"key":236,"name":237,"field":214},"php","PHP",{"key":239,"name_tr":240,"name_en":240,"sort":160,"specializations":241},"frontend","Frontend",[242,243,246,249,252,255],{"key":218,"name":219,"field":239},{"key":244,"name":245,"field":239},"javascript","JavaScript",{"key":247,"name":248,"field":239},"typescript","TypeScript",{"key":250,"name":251,"field":239},"react","React",{"key":253,"name":254,"field":239},"vue","Vue",{"key":256,"name":257,"field":239},"angular","Angular",{"key":259,"name_tr":260,"name_en":260,"sort":261,"specializations":262},"fullstack","Fullstack",3,[263,264,265,266,267,268,269,270,271,272,273,274],{"key":218,"name":219,"field":259},{"key":221,"name":222,"field":214},{"key":224,"name":225,"field":214},{"key":227,"name":228,"field":214},{"key":230,"name":231,"field":214},{"key":233,"name":234,"field":214},{"key":236,"name":237,"field":214},{"key":244,"name":245,"field":239},{"key":247,"name":248,"field":239},{"key":250,"name":251,"field":239},{"key":253,"name":254,"field":239},{"key":256,"name":257,"field":239},{"key":276,"name_tr":277,"name_en":277,"sort":278,"specializations":279},"devops-cloud","DevOps \u002F Cloud",4,[280,281,284,287,290,293,296],{"key":218,"name":219,"field":276},{"key":282,"name":283,"field":276},"aws","AWS",{"key":285,"name":286,"field":276},"gcp","GCP",{"key":288,"name":289,"field":276},"azure","Azure",{"key":291,"name":292,"field":276},"kubernetes","Kubernetes",{"key":294,"name":295,"field":276},"terraform","Terraform",{"key":297,"name":298,"field":276},"linux","Linux",{"key":300,"name_tr":301,"name_en":301,"sort":302,"specializations":303},"ai-engineer","AI Engineer",5,[304,305,306,309],{"key":218,"name":219,"field":300},{"key":224,"name":225,"field":300},{"key":307,"name":308,"field":300},"llm-rag","LLM\u002FRAG",{"key":310,"name":311,"field":300},"mlops","MLOps",{"key":313,"name_tr":314,"name_en":315,"sort":316,"specializations":317},"database","Veritabanı","Database",6,[318,319,322,325,328],{"key":218,"name":219,"field":313},{"key":320,"name":321,"field":313},"postgresql","PostgreSQL",{"key":323,"name":324,"field":313},"mysql","MySQL",{"key":326,"name":327,"field":313},"mongodb","MongoDB",{"key":329,"name":330,"field":313},"redis","Redis",{"key":5,"name_tr":332,"name_en":6,"sort":333,"specializations":334},"Mobil",7,[335,336,337,338,339],{"key":218,"name":219,"field":5},{"key":121,"name":122,"field":5},{"key":117,"name":118,"field":5},{"key":8,"name":9,"field":5},{"key":124,"name":125,"field":5},{"key":341,"name_tr":342,"name_en":343,"sort":344,"specializations":345},"security","Güvenlik","Security",8,[346,347,350,353,356,359],{"key":218,"name":219,"field":341},{"key":348,"name":349,"field":341},"appsec","AppSec",{"key":351,"name":352,"field":341},"offensive-pentest","Offensive \u002F Pentest",{"key":354,"name":355,"field":341},"cloud-security","Cloud Security",{"key":357,"name":358,"field":341},"devsecops","DevSecOps",{"key":360,"name":361,"field":341},"blue-team-incident","Blue Team \u002F Incident",{"key":363,"name_tr":364,"name_en":365,"sort":366,"specializations":367},"qa-test-automation","QA \u002F Test Otomasyonu","QA \u002F Test Automation",9,[368],{"key":218,"name":219,"field":363},{"key":370,"name_tr":371,"name_en":371,"sort":372,"specializations":373},"data-engineer","Data Engineer",10,[374],{"key":218,"name":219,"field":370},{"key":376,"name_tr":377,"name_en":378,"sort":379,"specializations":380},"game-dev","Oyun Geliştirme","Game Development",11,[381],{"key":218,"name":219,"field":376},{"key":383,"name_tr":384,"name_en":384,"sort":385,"specializations":386},"ml-engineer","ML Engineer",12,[387],{"key":218,"name":219,"field":383},[14,15,16],{"junior":390,"mid":392,"senior":393},{"questions":391,"median_sec":3},20,{"questions":391,"median_sec":3},{"questions":391,"median_sec":3},[395,10],"tr",[397,398],"google","github",21750,true]