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我有以下域。我們如何實現Transfer
功能,可以將amount
從一個帳戶轉移到另一個帳戶。我應該可以從節省轉移到檢查,反之亦然。我是OOP世界,超級類型使它更容易。我想知道我們如何在Go中完成這項工作。Golang:如何實現傳輸方法/函數
type AccountData struct {
Num string
Name string
OpenDate time.Time
Balance float64
}
type SavingsAccount struct {
InterestRate float32
AccountData
}
type CheckingAccount struct {
TransactionFee float32
AccountData
}
type Account interface {
Deposit(amount float64) error
Withdraw(amount float64) error
}
//constructor functions
func OpenSavingsAccount(no string, name string, openingDate time.Time) SavingsAccount {
return SavingsAccount{
AccountData: AccountData{Num: no,
Name: name,
OpenDate: openingDate,
},
InterestRate: 0.9,
}
}
func OpenCheckingAccount(no string, name string, openingDate time.Time) CheckingAccount {
return CheckingAccount{
AccountData: AccountData{Num: no,
Name: name,
OpenDate: openingDate,
},
TransactionFee: 0.15,
}
}
//Account methods
func (acct *SavingsAccount) Withdraw(amount float64) error {
if acct.Balance < amount {
return errors.New("Not enough money to withdraw")
}
acct.Balance = acct.Balance - amount
return nil
}
func (acct *SavingsAccount) Deposit(amount float64) error {
fmt.Printf("Depositing %f \n", amount)
acct.Balance = acct.Balance + amount
return nil
}
func (acct *CheckingAccount) Deposit(amount float64) error {
fmt.Printf("Depositing %f \n", amount)
acct.Balance = acct.Balance + amount
return nil
}
func (acct *CheckingAccount) Withdraw(amount float64) error {
if acct.Balance < amount {
return errors.New("Not enough money to withdraw")
}
acct.Balance = acct.Balance - amount
return nil
}
所以它應該是一個函數。我試圖將其實現爲一種方法,即Transfer是Account接口類型的一部分。 –
https://play.golang.org/p/MC11OPJR3j我的解決方案出現錯誤 –
@ AravindR.Yarram:通過指向您的結構的指針:https://play.golang.org/p/dvBRS7xzQN –