2013.12
C# 5.0
C# 5.0
1/ C#과닷넷프레임워크
2/ C# 2.0, 3.0, 4.0, 5.0 정리
3/ 정리및Q&A
C#과닷넷프레임워크 – CIL (1)
(Common) Intermediate Language
IL
C#
기계어
C++
Managed Native
C#과닷넷프레임워크 – CIL (2)
HelloWorld의 C# / IL 언어using System;
namespace ConsoleApplication1{
class Program{
static void Main(string[] args){
Console.WriteLine("Hello World");}
}}
.assembly extern mscorlib{.publickeytoken = (B7 7A 5C 56 19 34 E0 89 ).ver 4:0:0:0
}.assembly helloworld{.custom instance void
[mscorlib]System.Runtime.CompilerServices.CompilationRelaxationsAttribute::.ctor(int32) = ( 01 00 08 00 00 00 00 00 ) .custom instance void [mscorlib]System.Runtime.CompilerServices.RuntimeCompatibilityAttribute::.ctor() =
( 01 00 01 00 54 02 16 57 72 61 70 4E 6F 6E 45 78
63 65 70 74 69 6F 6E 54 68 72 6F 77 73 01 ) .hash algorithm 0x00008004.ver 0:0:0:0
}.module helloworld.exe
.imagebase 0x00400000
.file alignment 0x00000200
.stackreserve 0x00100000
.subsystem 0x0003
.corflags 0x00000001
.class private auto ansi beforefieldinit ConsoleApplication1.Programextends [mscorlib]System.Object
{.method private hidebysig static void Main(string[] args) cil managed{
.entrypoint
.maxstack 8IL_0000: nopIL_0001: ldstr "Hello World"IL_0006: call void [mscorlib]System.Console::WriteLine(string)IL_000b: nopIL_000c: ret
}
.method public hidebysig specialname rtspecialname instance void .ctor() cil managed
{.maxstack 8IL_0000: ldarg.0IL_0001: call instance void [mscorlib]System.Object::.ctor()IL_0006: ret
}}
C#과닷넷프레임워크 – CIL (3)
닷넷언어를만드는 2가지방법
1. 소스코드 CLI표준에정의된바이너리를직접생성
2. 소스코드 IL 언어 ilasm.exe를이용해서 CLI 표준에정의된바이너리를생성
C#과닷넷프레임워크 – CIL (4)
IL에서만가능한표현
표현 IL C# VB.NET
리턴값에따른메서드오버로드 O X X
[protected and internal] 접근자 O X X
struct에서인자없는생성자정의 O X X
C#과닷넷프레임워크 –컴파일 (1)
두번의컴파일
C# 소스코드중간언어(Intermediate Language) 기계어
C# 컴파일러 JIT 컴파일러
릴리즈디버그 릴리즈디버그
C#과닷넷프레임워크 –컴파일 (2)
언어컴파일러
생산된 IL만올바르다면언어의문법은자유롭게확장가능
ex) VB.NET 의 Module에정의되는전역변수
JIT 컴파일러
실행시 IL 코드를 Debug / Release 모드에따라기계어로변환
ex) Field로정의하면 Property get/set으로정의하는것보다빠른가?
ex) 무한재귀호출이항상 StackOverflowException을발생할까?
C#과닷넷프레임워크 –버전
C#과닷넷프레임워크버전관계
닷넷버전 C# 버전 주요특징
1.0 ~ 1.1 1.0 C# 1.0
2.0 2.0 Generics
3.0 ~ 3.5 3.0 LINQ
4.0 4.0 dynamic예약어
4.5 5.0 async/await 예약어
C# 언어의발전요소
• CLR – 2.0(4.0) 신규 IL
• BCL (Base Class Library)
• 언어표현- Syntactic Sugar (단축표기)
- 기존의 IL 표현력추가
IL BCL 언어표현
- - -
C# 5.0
1/ C#과닷넷프레임워크
2/ C# 2.0, 3.0, 4.0, 5.0 정리
3/ 정리및Q&A
C# 1.0
• VM 언어지만 Interop을고려 PInvoke, unsafe(pointer), delegate
ex) CPU 기계어코드를호출할수있을까?#include "stdafx.h"
void getCpuId(int bits[]){
_asm{
xor ebx, ebx;xor ecx, ecx;xor edx, edx;
mov eax, 0;
cpuid;
mov edi, bits;
mov dword ptr [edi + 0], eax;mov dword ptr [edi + 4], ebx;mov dword ptr [edi + 8], ecx;mov dword ptr [edi + 12], edx;
}}
int _tmain(int argc, _TCHAR* argv[]){
int bits[4];
getCpuId(bits); printf("%x, %x, %x, %x\n", bits[0], bits[1], bits[2], bits[3]);
return 0;}
C# 2.0
• ?? 연산자• yield return/break
• partial class
• anonymous method
• static class
• 제네릭(Generics)
• Nullable
C# 2.0 - ?? 연산자
IL BCL 언어표현
- - O
string txt = null;
if (txt == null){
Console.WriteLine("(null)");}else{
Console.WriteLine(txt);}
string txt = null;Console.WriteLine(txt ?? "(null)");
C# 2.0 – yield return/break (1)
• IEnumerable의단축표기
F# C# 주요특징
list IList, ICollection 요소의전체목록을보유
sequence IEnumerable 필요한순간에요소의값을계산
IL BCL 언어표현
- - O
C# 2.0 – yield return/break (2)
• IList / ICollection
public class ListNatural{
ArrayList GetNumbers(int max){
ArrayList list = new ArrayList();
for (int i = 1; i <= max; i++){
list.Add(i);}
return list;}
}
C# 2.0 – yield return/break (3)
• IEnumerablepublic class SequenceNatural : IEnumerable, IEnumerator{
int _current;
public IEnumerator GetEnumerator(){
_current = 0;return this;
}
public object Current{
get { return _current; }}
public bool MoveNext(){
_current++;return true;
}
public void Reset(){
_current = 0;}
}
C# 2.0 – yield return/break (3)
• yield return/break
public class YieldNatural{
public IEnumerable GetNumbers(){
int n = 1;while (true){
yield return n;
// if (n == 100) yield break;n++;
}}
}
C# 2.0 – partial type (1)
• 클래스의구현을 2개이상으로분리
IL BCL 언어표현
- - O
partial class MyClass{
public void Do(){
Console.Write(_number);}
}
partial class MyClass{
private int _number = 1;}
partial class MyClass{
public void Do(){
Console.Write(_number);}
private int _number = 1;}
C# 2.0 – partial type (2)
• 자동코드생성의문제점해결!- Visual Studio 2002/2003 2005
• F#은 WPF를왜지원하지않는가?
C# 2.0 –익명메서드 (1)
• 이름없는메서드정의가능
IL BCL 언어표현
- - O
static void Main(string[] args){
Thread t = new Thread(func);t.Start();
}
private static void func(object obj){
Console.Write("...");}
static void Main(string[] args){
Thread t = new Thread(delegate (object obj){
Console.Write("...");}
);
t.Start();}
C# 2.0 –익명메서드 (2)
using System;
namespace ConsoleApplication1{
class Program{
delegate void Functor(object obj);
static void Main(string[] args){
Functor logOutput = delegate(object obj) { Console.Write(obj); };
logOutput("test");}
}}
• delegate 타입의인자로 인라인메서드정의
C# 2.0 –익명메서드 (3)
• 이벤트처리기
this.textBox1.TextChanged += delegate (object sender, EventArgs e) {
Console.WriteLine(“Do!”);};
// 또는 delegate의 인자를 사용하지 않는다면 생략 가능
this.textBox1.TextChanged += delegate { Console.WriteLine(“Do!”); };
C# 2.0 – static class
• IL 코드표현: 상속불가능한 추상클래스• C# 컴파일러: 인스턴스 멤버정의불가능
IL BCL 언어표현
- - O
abstract class AbstractClass {}
static class StaticClass{}
.class private abstract auto ansi beforefieldinit AbstractClassextends [mscorlib]System.Object
{.method family hidebysig specialname rtspecialname instance
void .ctor() cil managed{}
}
.class private abstract auto ansi sealed beforefieldinit StaticClass
extends [mscorlib]System.Object{}
C# 2.0 –제네릭 (1)
• C++의 template과 유사
IL BCL 언어표현
O - -
public class NewStack<T>{
T [] _objList;int _pos;
public NewStack(int size){
_objList = new T[size];}
public void Push(T newValue){
_objList[_pos] = newValue;_pos++;
}
public T Pop(){
_pos--;return _objList[_pos];
}}
C# 2.0 –제네릭 (2)
• 메서드수준의 제네릭도지원
public class LogOutput{
public void Output<T,V>(T value1, V value2){
Console.WriteLine(value1 + “: ” + value2);}
}
C# 2.0 –제네릭 (3)
• 박싱/언박싱 문제를 해결
ArrayList list = new ArrayList();list.Add(5); // void Add(object value)list.Add(6);
List<int> list = new List<int>();list.Add(5); // void Add(T item)list.Add(6); // void Add(int item);
C# 2.0 –제네릭 (4)
• 제약 1 – 상속타입
public static T Max<T>(T item1, T item2) where T : IComparable{
if (item1.CompareTo(item2) >= 0){
return item1;}
return item2;}
C# 2.0 –제네릭 (5)
• 제약 2 – 값/참조 타입
public static void Print<T,V>(T item1, V item2) where T : structwhere V : class
{Console.WriteLine(item1);
if (item2 != null) // 값 형식인 item1과 비교한다면 컴파일 에러{
Console.WriteLine(item2);}
}
C# 2.0 –제네릭 (6)
• 제약 3 – 인자없는생성자 필수
public static T AllocateIfNull<T>(T item) where T : class, new(){
if (item == null){
item = new T();}
return item;}
C# 2.0 –제네릭 (7)
• 기존컬렉션의 제네릭버전제공
.NET 1.x 컬렉션 대응되는제네릭버전의컬렉션
ArrayList List<T>
Hashtable Dictionary<TKey, TValue>
SortedList SortedDictionary<TKey, TValue>
Stack Stack<T>
Queue Queue<T>
C# 2.0 – Nullable 타입
• .NET 2.0 BCL: Nullable<T> 구조체 추가• C#의경우 T? 형태로 단축표기
IL BCL 언어표현
- O O
int? value1 = null; // Nullable<int> value1;short? value2 = 5; // Nullable<short> value2;
if (value1.HasValue){
Console.WriteLine(value1);}
Console.WriteLine(value2); // Console.WriteLine(value2.Value);
C# 5.0
1/ C#과닷넷프레임워크
2/ C# 2.0, 3.0, 4.0, 5.0 정리
3/ 정리및Q&A
C# 3.0
• 자동구현속성• 컬렉션초기화• LINQ
var
객체초기화 익명타입 확장메서드 람다식
C# 3.0 –자동구현속성 (1)
• Field + Property 구현을단순화
IL BCL 언어표현
- - O
class Person{
string _name;public string Name{
get { return _name; }set { _name = value; }
}
int _age;public int Age{
get { return _age; }set { _age = value; }
}}
public string Name { get; set; }public int Age { get; set; }
C# 3.0 –자동구현속성 (2)
• get/set의접근제한자
class Person{
public string Name{
get; protected set;
}
public int Age{
get; private set;
}}
C# 3.0 –컬렉션초기화
• ICollection 인터페이스를 구현한타입• 컬렉션의 요소를 new 구문에서 추가
IL BCL 언어표현
- - O
List<int> numbers = new List<int>();
numbers.Add(0);numbers.Add(1);numbers.Add(2);numbers.Add(3);numbers.Add(4);
List<int> numbers = new List<int> { 0, 1, 2, 3, 4 };
C# 3.0 – LINQ
• 발음: LINK? LIN-Q?
둘다옳다.
“Moq”도 “mock”으로발음하기도하지만 “mock u”로발음하는것처럼,
일반적으로 “link”라고발음하지만 “link u”로발음하기도함.
주의사항: FAQ에대해서까지이규칙을적용해서는안됨
(출처: http://stackoverflow.com/questions/2659330/how-to-pronounce-linq)
C# 3.0 – LINQ (1)
• LINQ: Language-INtegrated Query
언어에통합된쿼리표현식(Query Expressions)
List<Person> people = new List<Person>{
new Person { Name = "Anders", Age = 47, Married = true },new Person { Name = "Hans", Age = 25, Married = false },
};
IEnumerable<Person> all = from person in peopleselect person;
foreach (Person item in all){
Console.WriteLine(item);} IL BCL 언어표현
- O O
C# 3.0 – LINQ (2)
• SQL 쿼리의 SELECT와유사
방식 코드
SQL SELECT * FROM people
LINQIEnumerable<Person> all = from person in people
select person;
메서드
IEnumerable<Person> SelectFunc(List<Person> people){foreach (Person item in people){yield return item;
}}
C# 3.0 – var 예약어
• 컴파일러가 로컬변수의형식을 추론• C++ 11의 auto 예약어와동격
IEnumerable<Person> all = from person in peopleselect person;
var all = from person in peopleselect person;
foreach (var item in all){
Console.WriteLine(item);}
IL BCL 언어표현
- - O
C# 3.0 –객체초기화 (1)
• 공용속성을통해객체생성시에초기화class Person{
public string Name { get; set; }public int Age { get; set; }
}
Person p1 = new Person();p1.Name = “Hans”;p1.Age = 30;
Person p2 = new Person { Name = "Tom", Age = 29 };
IL BCL 언어표현
- - O
C# 3.0 –객체초기화 (2)
• SELECT * FROM people
SELECT Name, Age FROM people
SELECT Name, Married FROM people
var all = from person in peopleselect person;
var all = from person in peopleselect new Person { Name = person.Name, Age = person.Age };
var all = from person in peopleselect new Person { Name = person.Name,
Married = person.Married };
C# 3.0 –객체초기화 (4)
• 컬렉션초기화 + 객체초기화
List<Person> list = new List<Person>{
new Person { Name = "Ally", Age = 35 },new Person { Name = "Luis", Age = 40 },
};
C# 3.0 –익명타입 (1)
• 이름없는타입
내부적인처리는익명메서드와유사
• var 사용은 필수
var p = new { Count = 10, Title = "Anders" };
Console.WriteLine(p.Title + ": " + p.Count);
IL BCL 언어표현
- - O
C# 3.0 –익명타입 (2)
• LINQ - SELECT
var all = from person in peopleselect new { Name = person.Name, Age = person.Age };
var all = from person in peopleselect new { Name = person.Name,
Married = person.Married };
foreach (var item in all){
Console.WriteLine(item);}
C# 3.0 –익명타입 (3)
• SELECT p.Name, p.Age, lang.Language
FROM people as p
INNER JOIN Language as lang
ON p.Name = lang.Name
var all = from p in people
join lang in languages on p.Name equals lang.Name
select new { Name = p.Name, Age = p.Age, Language = lang.Language };
foreach (var item in all){
Console.WriteLine(item);}
C# 3.0 –확장메서드 (1)
• 정적메서드를 마치인스턴스메서드처럼 사용
IL BCL 언어표현
- - O
class Program{
static void Main(string[] args){
string txt = "http://www.naver.com";
string contents = txt.TextFromUrl();Console.WriteLine(contents);
}}
static class StringExtension{
public static string TextFromUrl(this string txt){
WebClient wc = new WebClient();return wc.DownloadString(txt);
}}
C# 3.0 –확장메서드 (2)
• 결국정적메서드호출
class Program{
static void Main(string[] args){
string txt = "http://www.naver.com";
string contents = StringExtension.TextFromUrl(txt);Console.WriteLine(contents);
}}
static class StringExtension{
public static string TextFromUrl(string txt){
WebClient wc = new WebClient();return wc.DownloadString(txt);
}}
C# 3.0 –확장메서드 (3)
• 쿼리구문과메서드 기반구문
var all = from p in peopleselect p;
var all = people.Select(delegate(Person p) { return p; });
var all = from p in peopleselect new { Name = p.Name, Age = p.Age };
var all = people.Select(delegate(Person p){
return new { Name = p.Name, Age = p.Age };});
C# 3.0 –확장메서드 (4)
• SELECT * FROM people WHERE Age >= 30
var all = from p in peoplewhere p.Age >= 30select p;
var all = people.Where (delegate(Person p) { return p.Age >= 30; }).Select(delegate(Person p) { return p; });
C# 3.0 –확장메서드 (5)
• SELECT * FROM people ORDER BY Age
var all = people.OrderBy(delegate(Person p) { return p.Age; }).Select (delegate(Person p) { return p; });
var all = from p in peopleorderby p.Ageselect p;
C# 3.0 –람다식 (1)
• 추론을통해 delegate 익명메서드를 개선
IL BCL 언어표현
- - O
delegate void Functor(object obj);
Functor logOutput = delegate(object obj) { Console.Write(obj); };
Functor logLambda = (obj) => { Console.Write(obj); };
C# 3.0 –람다식 (2)
• 값반환+단문메서드 return+중괄호 생략
delegate int Calc(int v1, int v2);
Calc addFunc = (v1, v2) => { return v1 + v2; };
Calc addLambda = (v1, v2) => v1 + v2;
C# 3.0 –람다식 (3)
• 메서드기반쿼리를 단순화
var all = people.Select(p => p);
var all = people.Select(p => new { Name = p.Name, Age = p.Age });
var all = people.Select(delegate(Person p) { return p; });
var all = people.Select(delegate(Person p){
return new { Name = p.Name, Age = p.Age };});
C# 3.0 –람다식 (4)
• 데이터로써의 람다 Expression Tree
[데이터]
Expression<Func<int, int, int>> exp = (a, b) => a + b;
[mscorlib 어셈블리]public delegate TResult Func<T1, T2, TResult>(T1 arg1, T2 arg2)
[코드]
Func<int, int, int> exp = (a, b) => a + b;
C# 3.0 –람다식 (5)
• Expression Tree
// 람다 식 본체의 루트는 2항 연산자인 + 기호BinaryExpression opPlus = exp.Body as BinaryExpression;Console.Write(opPlus.NodeType); // 출력: Add
// 2항 연산자의 좌측 연산자의 표현식ParameterExpression left = opPlus.Left as ParameterExpression;Console.Write(left.NodeType + ": " + left.Name); // 출력: Parameter: a
// 2항 연산자의 우측 연산자의 표현식ParameterExpression right = opPlus.Right as ParameterExpression;Console.Write(right.NodeType + ": " + right.Name); // 출력: Parameter: b
C# 3.0 –람다식 (6)
• Expression Tree 컴파일
Expression<Func<int, int, int>> exp = (a, b) => a + b;
var addFunc = exp.Compile();
Console.WriteLine(addFunc(5, 6));
C# 3.0 –람다식 (7)
• 사례 1) SQL 쿼리를생성
Expression<Func<IOrderedEnumerable<Person>>> func =() => from p in people
orderby p.Age descendingselect p;
SELECT * FROM people ORDER BY Age DESC
C# 3.0 –람다식 (8)
• 사례 2) 공용속성이름private int age = 0;public int Age{
get{
return age;}set{
age = value;OnPropertyChanged(() => this.Age); // OnPropertyChanged(“Age”);
}}
public event PropertyChangedEventHandler PropertyChanged;
public void OnPropertyChanged<TValue>(Expression<Func<TValue>> propertySelector){
if (PropertyChanged != null){
var memberExpression = propertySelector.Body as MemberExpression;if (memberExpression != null){
PropertyChanged(this, new PropertyChangedEventArgs(memberExpression.Member.Name));}
}}
C# 3.0 – LINQ 정리
• LINQ to …
• 표준쿼리연산자
C# 5.0
1/ C#과닷넷프레임워크
2/ C# 2.0, 3.0, 4.0, 5.0 정리
3/ 정리및Q&A
C# 4.0 –선택적매개변수
• 선택적매개변수• 명명된인자• dynamic
C# 4.0 –선택적매개변수 (1)
• C++의디폴트매개변수class Person{
public void Output(string name, int age = 0, string address = "Korea"){
Console.Write(string.Format("{0}: {1} in {2}", name, age, address));}
}
class Program{
static void Main(string[] args){
Person p = new Person();
p.Output("Anders");p.Output("Winnie", 36);p.Output("Tom", 28, "Tibet");
}}
IL BCL 언어표현
O - -
C# 4.0 –선택적매개변수 (2)
• 확장된 IL 구문
.method public hidebysig instance void Output(string name,[opt] int32 age, [opt] string address) cil managed
{.param [2] = int32(0x00000000).param [3] = "Korea"
.maxstack 8IL_0000: nop...[생략]…IL_0019: ret
}
C# 4.0 –명명된인자
• 인자의이름으로호출측에서값전달
IL BCL 언어표현
- - O
class Person{
public void Output(string name, int age = 0, string address = "Korea"){
Console.Write(string.Format("{0}: {1} in {2}", name, age, address));}
}
class Program{
static void Main(string[] args){
Person p = new Person();
p.Output(address: "Tibet", name: "Tom");p.Output(age: 5, name: "Tom", address: "Tibet");p.Output(name: "Tom");
}}
C# 4.0 – dynamic (1)
• 실행시에결정되는타입
IL BCL 언어표현
- O O
using System;
namespace ConsoleApplication1{
class Program{
static void Main(string[] args){
dynamic d = 5;
int sum = d + 10;Console.WriteLine(sum);
}}
}
C# 4.0 – dynamic (2)
• 결국은 object 타입using System;using System.Runtime.CompilerServices;using Microsoft.CSharp.RuntimeBinder;
class Program{
public static CallSite<Action<CallSite, object>> p__Site1;
static void Main(){
object d = 5;
if (p__Site1 == null){
p__Site1 = CallSite<Action<CallSite, object>>.Create(Binder.InvokeMember(CSharpBinderFlags.ResultDiscarded,
"CallTest", null, typeof(Program),new CSharpArgumentInfo[] {
CSharpArgumentInfo.Create(CSharpArgumentInfoFlags.None, null)}));
}p__Site1.Target(p__Site1, d);
}}
static void Main(){
dynamic d = 5;
d.CallTest();}
C# 4.0 – dynamic (3)
• IronPython과 C#
using System;using IronPython.Hosting;
class Program{
static void Main(string[] args){
var scriptEngine = Python.CreateEngine();
string code = @"print 'Hello Python'";
scriptEngine.Execute(code);// 'Hello Python' 문자열 출력
}}
1. NuGet 콘솔을열고,2. “Install-Package IronPython” 명령어실행
C# 4.0 – dynamic (4)
• C#에서 IronPython 메서드연동
using System;using IronPython.Hosting;
class Program{
static void Main(string[] args){
var scriptEngine = Python.CreateEngine();
var scriptScope = scriptEngine.CreateScope();
string code = @"def AddFunc(a, b):
print 'AddFunc called'
return (a + b)";
scriptEngine.Execute(code, scriptScope);
dynamic addFunc = scriptScope.GetVariable("AddFunc");int nResult = addFunc(5, 10);
Console.WriteLine(nResult);}
}
C# 4.0 – dynamic (5)
• IronPython에서 C# 메서드연동using System;using System.Collections.Generic;using IronPython.Hosting;
class Program{
static void Main(string[] args){
var scriptEngine = Python.CreateEngine();var scriptScope = scriptEngine.CreateScope();
List<string> list = new List<string>();scriptScope.SetVariable("myList", list);
string code = @"myList.Add('my')myList.Add('python')";
scriptEngine.Execute(code, scriptScope);
foreach (var item in list){
Console.WriteLine(item);}
}}
C# 5.0
1/ C#과닷넷프레임워크
2/ C# 2.0, 3.0, 4.0, 5.0정리
3/ 정리및Q&A
C# 5.0 –호출자정보
• C++의 3가지매크로상수에대응__FUNCTION__, __FILE__, __LINE__,
using System;using System.Runtime.CompilerServices;
class Program{
static void Main(string[] args){
LogMessage("테스트 로그");}
static void LogMessage(string text,[CallerMemberName] string member = "",[CallerFilePath] string file = "",
[CallerLineNumber] int line = 0){
Console.WriteLine("텍스트: " + text);Console.WriteLine("호출한 메서드 이름: " + member);
Console.WriteLine("호출한 소스코드의 파일명: " + file);Console.WriteLine("호출한 소스코드의 라인번호: " + line);
}}
IL BCL 언어표현
- O O
C# 5.0 – async/await (1)
• 마치동기방식처럼비동기호출private static async void AwaitRead(){
using (FileStream fs = new FileStream(@"…", FileMode.Open)){
byte[] buf = new byte[fs.Length];
await fs.ReadAsync(buf, 0, buf.Length);
string txt = Encoding.UTF8.GetString(buf);Console.WriteLine(txt);
}}
IL BCL 언어표현
- O O
static void Main(string[] args){
AwaitRead()Console.ReadLine();
}
C# 5.0 – async/await (2)
• 비동기호출시스레드상태
C# 5.0 – async/await (3)
• 사용자정의 …Async 메서드
private static async void FileReadAsync(string filePath){
string fileText = await ReadAllTextAsync(filePath);Console.WriteLine(fileText);
}
static Task<string> ReadAllTextAsync(string filePath){
return Task.Factory.StartNew(() =>{
return File.ReadAllText(filePath);});
}
C# 5.0
1/ C#과닷넷프레임워크
2/ C# 2.0, 3.0, 4.0, 5.0 정리
3/ 정리및Q&A
정리
방식 수
신규 IL 2
BCL확장 5
언어확장 18
• 단축표기법
• C# 6.0?
• Roslyn?