Sha256: dfe4136b332e56699551e10c4405d6ddebac0518a43bd65fdbfbe1ca94a14853
Contents?: true
Size: 786 Bytes
Versions: 210
Compression:
Stored size: 786 Bytes
Contents
package account
import "sync"
type Account struct {
sync.RWMutex
open bool
balance int64
}
func Open(amt int64) *Account {
if amt < 0 {
return nil
}
return &Account{open: true, balance: amt}
}
func (a *Account) Balance() (bal int64, ok bool) {
a.RLock()
bal, ok = a.balance, a.open
a.RUnlock()
return
}
func (a *Account) Deposit(amt int64) (newBal int64, ok bool) {
a.Lock()
defer a.Unlock()
if !a.open {
return a.balance, false
}
if amt < 0 && a.balance+amt < 0 {
return a.balance, false
}
a.balance += amt
return a.balance, true
}
func (a *Account) Close() (pay int64, ok bool) {
a.Lock()
defer a.Unlock()
if !a.open {
return 0, false
}
a.open = false
if a.balance < 0 {
return 0, true
}
pay = a.balance
a.balance = 0
return pay, true
}
Version data entries
210 entries across 210 versions & 1 rubygems