319. (Flutter/플러터) [Mac] : [Dart] : callback 사용해 함수 호출 및 콜백 결과 확인

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[개발 환경 설정]

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개발 툴 : AndroidStudio

개발 언어 : Dart

 

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[소스 코드]

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import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/services.dart';
import 'dart:developer';
import 'dart:core';
import 'dart:convert';
import 'dart:typed_data';
// -----------------------------------------------------------------------------------------



// -----------------------------------------------------------------------------------------
// TODO [main] : [application 의 진입점 역할]
// -----------------------------------------------------------------------------------------
void main() async {
  log("");
  log("-------------------------------------------------------");
  log("Application :: Start");
  log("-------------------------------------------------------");
  log("");

  // [WidgetsFlutterBinding 초기화]
  WidgetsFlutterBinding.ensureInitialized();

  // [콜백 함수 호출]
  callbackFunction(10, 20, (callback) {
    log("");
    log("-------------------------------------------------------");
    log("callback :: ${callback}");
    log("-------------------------------------------------------");
    log("");
  });

}





// -----------------------------------------------------------------------------------------
// TODO [callbackFunction 함수 생성]
// -----------------------------------------------------------------------------------------
Function callbackFunction(int one, int two, callback) {
  return callback(one + two);
}

 

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[결과 출력]

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