pragma solidity ^0.4.0;contract Test{    /* 属性的访问权限    priveta public internal    defualt internal    interlnal,private cannot be accessed from outside    */    uint8 internal _money;    uint8 _age;    uint8 private _height;    uint8 public _sex;        /*uint8 public _sex == function _sex() returns(uint8)     当属性类型为public时,会生成一个和属性名相同并且返回值就是当前属性的get函数    function _sex()函数会覆盖掉public类型的属性自动生成的get函数;_sex()返回的是1,而不是0    */    function _sex() returns(uint8){        //return _sex;        //this._age; return this.age();TypeError: Member "age" not found or not visible after argument-dependent lookup in contract Test        this._sex();        return 1;    }        /*方法的访问权限    //public private internal external    //defualt public    //internal private cannot be accessed from outside    */    function sex() returns(uint8){        return 1;    }    function age() internal returns(uint8){        return 18;    }    function height() public returns(uint8){        return 175;    }    function money() private returns(uint){        return 3500;    }        function year() external returns(uint){        return 2018;    }        function testInternal() returns(uint){        //return this.sex();        //return this.year(); this(指针) 通过合约地址进行访问         return money();        //return this.age();TypeError: Member "age" not found or not visible after argument-dependent lookup in contract Person        //    }}

无论是属性还是方法,只有是public/external类型时,才可以通过合约地址进行访问,合约内部的this就是当前合约地址。 在合约内部如果要访问internal,private类型的属性或者是函数,直接访问即可,不要试图通过this去访问

 

//本合约内部调用//this.external调用 function test() public{    getC(); //interl    this.getD();//external    getE();//private    this.kill();//public    kill();//public}//未使用继承,外部调用//只能调用external/publiccontract mytract{function getA() public {    **getC(); //interl    this.getD();//external    **getE();//private    this.kill();//public    **kill();//public    }  }//使用继承,外部调用//无法调用私有变量contract mytract is Funder{        function getA() public {        getC(); //interl        this.getD();//external        **getE();//private        this.kill();//public        kill();//public    }}