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package incremental
import (
"sync"
)
type Int64 struct {
increment int64
lock sync.Mutex
}
// Next returns with an integer that is exactly one higher as the previous call to Next() for this Int64
func (i *Int64) Next() int64 {
i.lock.Lock()
defer i.lock.Unlock()
i.increment++
return i.increment
}
// Last returns the number (int64) that was returned by the most recent call to this instance's Next()
func (i *Int64) Last() int64 {
return i.increment
}
// Set changes the increment to given value, the succeeding call to Next() will return the given value+1
func (i *Int64) Set(value int64) {
i.lock.Lock()
defer i.lock.Unlock()
i.increment = value
}
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