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package model
import (
"fmt"
"strconv"
)
func isInt(s string) error {
_, err := strconv.Atoi(s)
if err != nil {
return fmt.Errorf("'%s' cannot be casted to integer", s)
}
return nil
}
func isPositiveOrZeroInt(s string) error {
i, err := strconv.Atoi(s)
if err != nil {
return fmt.Errorf("'%s' cannot be casted to integer", s)
}
if i < 0 {
return fmt.Errorf("'%s' is negative", s)
}
return nil
}
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