Dart

I was trying to push a build when multiple issues hit at once. The code generator failed, files were missing, the build number got rejected, UI had hardcoded dark mode colors, and logout wasn’t clearing tokens. Going through them one by one. 1. Retrofit Optional Parameter Syntax Error -> .g.dart Generation Failure Symptoms When running dart run build_runner build, some API service files produce: Expected to find ')' Cause Wrong placement of optional parameters ({}) in Retrofit abstract methods. ...

If you maintain a Flutter project long enough, the day comes when flutter analyze spits out hundreds of deprecated warnings. Everything works fine functionally, but when warnings pile up, real problems get buried. Here are the patterns from cleaning up 200+ deprecated warnings in one go. Diagnosis: Assess the Situation with flutter analyze flutter analyze --no-pub Adding --no-pub skips pub package re-analysis for speed. Categorizing the output reveals that most warnings are a few repeating patterns. ...

Notes on integrating the DART Open API (Korea’s Financial Supervisory Service disclosure system) with a Rails backend. Implemented 5 areas: disclosure monitoring, audit opinions, governance, financial indexes, and equity reports – each step came with its own struggles. Implementation Structure Created a model and ActiveJob for each data type. Each job calls the DART API and inserts data using upsert_all – simple structure. DartCorpCodeSyncJob -> dart_companies (company master) DartDisclosureSyncJob -> dart_disclosures (disclosure list) DartMajorEventSyncJob -> dart_major_events (delisting trigger events -- DS001) DartAuditOpinionSyncJob -> dart_audit_opinions (audit opinions -- DS002/DS003) DartGovernanceSyncJob -> dart_executives / dart_major_shareholders (DS004/DS005) DartFinancialIndexSyncJob -> dart_financial_indexes (fnlttSinglAcntAll) DartEquityReportSyncJob -> dart_equity_reports (equity disclosures) Struggle 1: upsert_all + update_only + updated_at Duplication The first error to hit. ...