Question

我有问题，当我运行我的项目时，我遇到了崩溃：

线程1：致命错误：剩余或除以零）

这是什么意思？什么是解决方案？

这是我的代码：

let answer: String = data.ans // This variable called from SQLite database
answer.replacingOccurrences(of: " ", with: "") // Delete spaces between words


let lenghtOfChar = answer as NSString
// char count
let width: Int = Int(view.frame.size.width) - 40
// frame width
var targetWidth: Int = (width - (lenghtOfChar.length - 1) * 5) / lenghtOfChar.length //Here's the crash !!!!!!!!!

我的代码中出现了什么问题？

Answer 1

如果长度为0，则需要停止操作

let lenghtOfChar = (answer as NSString).length
guard lenghtOfChar != 0 else { return }
let width: Int = Int(view.frame.size.width) - 40
var targetWidth: Int = (width - (lenghtOfChar- 1) * 5)/lenghtOfChar

或者，您可以在长度为0时将宽度设置为0.下面是一个使用turnery操作员的示例：

let lenghtOfChar = answer as NSString
let width: Int = Int(view.frame.size.width) - 40
var targetWidth: Int = lenghtOfChar.length == 0 ? 0 : (width - (lenghtOfChar.length - 1) * 5)/lenghtOfChar.length

线程1：致命错误：剩余或除以零

1 个答案: