From c00da54ecddabb9e218029466bb35bca040b87fb Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Sat, 27 Aug 2016 16:48:26 +0200 Subject: Slove bank account --- go/bank-account/bank_account.go | 48 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 go/bank-account/bank_account.go (limited to 'go/bank-account/bank_account.go') diff --git a/go/bank-account/bank_account.go b/go/bank-account/bank_account.go new file mode 100644 index 0000000..bfaa894 --- /dev/null +++ b/go/bank-account/bank_account.go @@ -0,0 +1,48 @@ +package account + +import "sync" + +type Account struct { + balance int64 + open bool + sync.Mutex +} + +func Open(inital int64) *Account { + if inital < 0 { + return nil + } + return &Account{balance: inital, open: true} +} + +func (a *Account) Close() (int64, bool) { + a.Lock() + defer a.Unlock() + if a.open { + a.open = false + return a.balance, true + } + return 0, false +} + +func (a *Account) Balance() (int64, bool) { + a.Lock() + defer a.Unlock() + if a.open { + return a.balance, true + } + return 0, false +} + +func (a *Account) Deposit(amount int64) (int64, bool) { + a.Lock() + defer a.Unlock() + if a.open { + if a.balance < -amount { + return 0, false + } + a.balance += amount + return a.balance, true + } + return 0, false +} -- cgit v1.2.3