[C#/LINQ] Enumerable 클래스 : Where/ToArray 확장 메소드를 사용해 배열에서 null 요소 제거하기

icodebroker MICROSOFT 2024-06-19

■ Enumerable 클래스의 Where/ToArray 확장 메소드를 사용해 배열에서 null 요소를 제거하는 방법을 보여준다.

▶ 예제 코드 (C#)


using System;
using System.Linq;

Employee[] sourceArray = new Employee[]
{
    new Employee { EmployeeID = 1, Name = "김철수", Age = 20 },
    new Employee { EmployeeID = 2, Name = "홍길동", Age = 30 },
    null                                                      ,
    new Employee { EmployeeID = 3, Name = "이영희", Age = 25 }
};

Employee[] targetArray = sourceArray.Where(employ => employ != null).ToArray();

foreach(Employee employee in targetArray)
{
    Console.WriteLine(employee.Name);
}

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using System;

using System.Linq;

Employee[] sourceArray = new Employee[]

{

new Employee { EmployeeID = 1, Name = "김철수", Age = 20 },

new Employee { EmployeeID = 2, Name = "홍길동", Age = 30 },

null ,

new Employee { EmployeeID = 3, Name = "이영희", Age = 25 }

};

Employee[] targetArray = sourceArray.Where(employ => employ != null).ToArray();

foreach(Employee employee in targetArray)

{

Console.WriteLine(employee.Name);

}

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