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Servis, tüm uygulama tarafından paylaşılan bir singleton haline gelir; hiçbir yerde inject edilmiyorsa bundler onu tree-shaking ile kaldırabilir.",{"id":183,"topic":9,"difficulty":153,"body":184,"options":185,"correct_key":163,"explanation":194},"019f79bd-901a-7342-9503-2c70b89482a5","Bir Angular component'i, injectable bir servisin instance'ını genelde nasıl alır?",[186,188,190,192],{"key":157,"text":187},"Component içinde doğrudan `new ServiceName()` çağırarak",{"key":160,"text":189},"Servis sınıfını HTML template'ine import ederek",{"key":163,"text":191},"Tipini bir constructor parametresi olarak kullanarak",{"key":166,"text":193},"Component sınıfında statik bir property'ye atayarak","Angular'ın DI'ı, constructor parametre tiplerini çözümler ve eşleşen instance'ları otomatik olarak sağlar — bu, standart kalıp olan constructor injection'dır. Doğrudan `new` çağırmak DI'ı tamamen atlar; singleton davranışı ve injector hiyerarşisi kaybolur.",{"id":196,"topic":9,"difficulty":153,"body":197,"options":198,"correct_key":166,"explanation":207},"019f79bd-901a-7c5f-b940-4657e190c270","Bir servis bir yerde inject ediliyor ama zincirdeki hiçbir injector onun için bir provider'a sahip değilse (ve `providedIn` de yoksa) ne olur?",[199,201,203,205],{"key":157,"text":200},"Angular sessizce `null` inject eder",{"key":160,"text":202},"Angular otomatik olarak varsayılan, boş bir instance oluşturur",{"key":163,"text":204},"Component, eksik bağımlılığı yok sayarak normal render olur",{"key":166,"text":206},"Angular çalışma zamanında bir `NullInjectorError` fırlatır","Angular'ın DI'ı, token'ı injector ağacında yukarı doğru yürüyerek çözümler; bu yol boyunca hiçbir injector'da (ve `providedIn` de yoksa) provider bulunamazsa çözümleme başarısız olur ve Angular, eksik token'ı belirten bir `NullInjectorError` fırlatır.",{"id":209,"topic":9,"difficulty":153,"body":210,"options":211,"correct_key":157,"explanation":220},"019f79bd-901b-773b-ad4a-073898e8462d","```typescript\n@Injectable({ providedIn: 'root' })\nexport class LoggerService {\n  log(msg: string) { console.log(msg); }\n}\n\n@Component({ selector: 'app-root', template: '' })\nexport class AppComponent {\n  constructor(private logger: LoggerService) {}\n}\n```\n`AppComponent`'in aldığı `LoggerService` instance'ını burada ne oluşturur?",[212,214,216,218],{"key":157,"text":213},"Constructor parametre tipini kullanan Angular injector'ı",{"key":160,"text":215},"Component'in template'i, ilk render sırasında",{"key":163,"text":217},"Arka planda oluşturulan manuel bir `new LoggerService()` çağrısı",{"key":166,"text":219},"Bunun çalışması için gerekli olan `@Component` decorator'ının `providers` dizisi","`LoggerService`, `providedIn: 'root'` kullandığı için Angular'ın root injector'ında zaten bir provider vardır; DI sistemi `logger` constructor parametresinin tipini okur ve singleton instance'ı otomatik sağlar — `@Component`'te bir `providers` dizisine gerek yoktur.",{"id":222,"topic":9,"difficulty":153,"body":223,"options":224,"correct_key":160,"explanation":233},"019f79bd-901c-7206-9739-64f39171d6d9","Angular'da hiyerarşik bir injector sistemi vardır. 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Bir bağımlılık istendiğinde Angular, isteyen component'in injector'ından başlayarak bir provider bulunana kadar yukarı doğru arar.",{"fields":235,"seniorities":410,"interview_shapes":411,"locales":416,"oauth":418,"question_count":421,"coach_enabled":422,"jd_match_enabled":422},[236,261,270,287,311,324,343,362,384,391,397,404],{"key":237,"name_tr":238,"name_en":238,"sort":153,"specializations":239},"backend","Backend",[240,243,246,249,252,255,258],{"key":241,"name":242,"field":237},"general","Genel",{"key":244,"name":245,"field":237},"go","Go",{"key":247,"name":248,"field":237},"python","Python",{"key":250,"name":251,"field":237},"java","Java",{"key":253,"name":254,"field":237},"csharp","C#\u002F.NET",{"key":256,"name":257,"field":237},"nodejs","Node.js",{"key":259,"name":260,"field":237},"php","PHP",{"key":5,"name_tr":6,"name_en":6,"sort":262,"specializations":263},2,[264,265,266,267,268,269],{"key":241,"name":242,"field":5},{"key":139,"name":140,"field":5},{"key":145,"name":146,"field":5},{"key":142,"name":143,"field":5},{"key":148,"name":149,"field":5},{"key":135,"name":136,"field":5},{"key":271,"name_tr":272,"name_en":272,"sort":273,"specializations":274},"fullstack","Fullstack",3,[275,276,277,278,279,280,281,282,283,284,285,286],{"key":241,"name":242,"field":271},{"key":244,"name":245,"field":237},{"key":247,"name":248,"field":237},{"key":250,"name":251,"field":237},{"key":253,"name":254,"field":237},{"key":256,"name":257,"field":237},{"key":259,"name":260,"field":237},{"key":139,"name":140,"field":5},{"key":145,"name":146,"field":5},{"key":142,"name":143,"field":5},{"key":148,"name":149,"field":5},{"key":135,"name":136,"field":5},{"key":288,"name_tr":289,"name_en":289,"sort":290,"specializations":291},"devops-cloud","DevOps \u002F Cloud",4,[292,293,296,299,302,305,308],{"key":241,"name":242,"field":288},{"key":294,"name":295,"field":288},"aws","AWS",{"key":297,"name":298,"field":288},"gcp","GCP",{"key":300,"name":301,"field":288},"azure","Azure",{"key":303,"name":304,"field":288},"kubernetes","Kubernetes",{"key":306,"name":307,"field":288},"terraform","Terraform",{"key":309,"name":310,"field":288},"linux","Linux",{"key":312,"name_tr":313,"name_en":313,"sort":314,"specializations":315},"ai-engineer","AI Engineer",5,[316,317,318,321],{"key":241,"name":242,"field":312},{"key":247,"name":248,"field":312},{"key":319,"name":320,"field":312},"llm-rag","LLM\u002FRAG",{"key":322,"name":323,"field":312},"mlops","MLOps",{"key":325,"name_tr":326,"name_en":327,"sort":328,"specializations":329},"database","Veritabanı","Database",6,[330,331,334,337,340],{"key":241,"name":242,"field":325},{"key":332,"name":333,"field":325},"postgresql","PostgreSQL",{"key":335,"name":336,"field":325},"mysql","MySQL",{"key":338,"name":339,"field":325},"mongodb","MongoDB",{"key":341,"name":342,"field":325},"redis","Redis",{"key":344,"name_tr":345,"name_en":346,"sort":347,"specializations":348},"mobile","Mobil","Mobile",7,[349,350,353,356,359],{"key":241,"name":242,"field":344},{"key":351,"name":352,"field":344},"ios-swift","iOS (Swift)",{"key":354,"name":355,"field":344},"android-kotlin","Android (Kotlin)",{"key":357,"name":358,"field":344},"flutter","Flutter",{"key":360,"name":361,"field":344},"react-native","React Native",{"key":363,"name_tr":364,"name_en":365,"sort":366,"specializations":367},"security","Güvenlik","Security",8,[368,369,372,375,378,381],{"key":241,"name":242,"field":363},{"key":370,"name":371,"field":363},"appsec","AppSec",{"key":373,"name":374,"field":363},"offensive-pentest","Offensive \u002F Pentest",{"key":376,"name":377,"field":363},"cloud-security","Cloud Security",{"key":379,"name":380,"field":363},"devsecops","DevSecOps",{"key":382,"name":383,"field":363},"blue-team-incident","Blue Team \u002F Incident",{"key":385,"name_tr":386,"name_en":387,"sort":388,"specializations":389},"qa-test-automation","QA \u002F Test Otomasyonu","QA \u002F Test Automation",9,[390],{"key":241,"name":242,"field":385},{"key":392,"name_tr":393,"name_en":393,"sort":394,"specializations":395},"data-engineer","Data Engineer",10,[396],{"key":241,"name":242,"field":392},{"key":398,"name_tr":399,"name_en":400,"sort":401,"specializations":402},"game-dev","Oyun Geliştirme","Game Development",11,[403],{"key":241,"name":242,"field":398},{"key":405,"name_tr":406,"name_en":406,"sort":407,"specializations":408},"ml-engineer","ML Engineer",12,[409],{"key":241,"name":242,"field":405},[14,15,16],{"junior":412,"mid":414,"senior":415},{"questions":413,"median_sec":3},20,{"questions":413,"median_sec":3},{"questions":413,"median_sec":3},[10,417],"en",[419,420],"google","github",21750,true]