运行工程时的报错
1. tableView, 编辑后cell.row的数目 与 原来设置的数目 不相符; 关于 tabViewCell 进入编辑模式的错误
reason: 'Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update (5) must be equal to the number of rows contained in that section before the update (5), plus or minus the number of rows inserted or deleted from that section (0 inserted, 1 deleted) and plus or minus the number of rows moved into or out of that section (0 moved in, 0 moved out).