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📜  快速字符串连接 - Swift 代码示例

📅  最后修改于: 2022-03-11 15:01:01.491000             🧑  作者: Mango

代码示例2
// Create a literal empty string
var emptyString = ""

// Create an optional string
var emptyVariable: String?  // This allows this variable to have a null value, or nil in swift