FormatException 是 Dart 中常见的运行时异常之一，通常在字符串解析或格式转换失败时抛出（例如将无效字符串转换为数字、日期等）。以下是围绕 FormatException 的全面解析和捕获示例。 int.parse('abc') 或 double.parse('12.3.4')（字符串格式不符合数字规则）。 无效的日期 ...

假设我们有一个函数，用于将字符串解析为整数。如果输入的字符串格式无效（例如包含字母），则会抛出 FormatException。我们 ...

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