软件开发技术

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Teaching

讲22Transition

Lambda表达式31

delegatevoidMyDel(intclass{staticvoidPrintLow(int{ ine("{0}–lowValue", staticvoidPrintHigh(int{ ine("{0}–HighValue", staticvoid{ MyDel intrandomValue=new del=randomValue< ?new :new ----方法方法

方法方法 方法51和类相似 是用户自定义 类类类类型的变填充变

创 它 使用变6 类型和创 对11delegatevoidMyDel(intx MyDeldelVar=newMyDel(myInstObj.MyM1MyDel =newMyDel(SClass.OtherM2 MyDelMyDeldelVar=MyDel =71 赋MyDeldelVar=delVar 执行完后，myInstObj.MyM1 81MyDeldelA=MyDeldelB=MyDeldelC=delA+ 91 添加方为为MyDeldelVar=delVar+=delVar+=

1 移除方1delVar-= 1MyDeldelVar=delVar+=delVar+= delegatevoid class publicvoid

ine("Print1-- 89

publicstaticvoid{ ine("Print2--} class staticvoid Testt=new PrintFunction pf= pf+= pf+= pf+=is}}11delegateint2class{intIntValue=

调用列表中最后一个方法返回的值就 调用返回的值publicintAdd2(){IntValue+=2;returnIntValue;publicintAdd3(){IntValue+=3;returnIntValue;89class{staticvoid{MyClassmc=newMyDelmDel=mDel+=mDel+= ine("Value:{0}", 20

1delegatevoidMyDel(refintx class{5Add2(refintx)x}6Add3(refintx)x}789{MyClassmc=newMyDelmDel=mDel+=mDel+=intx=mDel(ref 20

ine("Value:{0}",Transition

Lambda表达式2方2

1class2{{3publicstaticintAdd20(int 4{56789

returnreturnx+}delegateintOtherDel(intstaticvoid{OtherDeldel= ine("{0}", ine("{0}",}

delegateintOtherDel(intstaticvoid{OtherDeldel=delegate(int{returnx+ ine("{0}", ine("{0}",}方法是在初始 时内 的方法方法允许我们避delegate参数列表语句2方2delegatevoidMyDel(intMyDelmDel=delegate(int intz=

6

ine("{0},{1}",y, ine("{0},{1}",y,913intx=

14MyDelmDel=

变量x可以 方法作用域之内使

ine("{0}",Transition

Lambda表达式333311参数列表33123x=>{return45(int67(intx)=>{return8911(13( ine(15

19

delegatedoubleCalc(doublestaticdouble[]Apply(do