Question

我知道我的问题标题令人困惑，但我会清楚地说明我的解释。在阅读我的问题后，请建议一个好的标题，以便它对其他人有所帮助。

我有一个标签，其文本由API中的JSON确定。

text_from_json =  "My name is _ and my age is _"
mylabel.text = text_from_json

我的年龄为＃34; 26＆＃34;并命名为＆＃34; jack＆＃34;在课堂上的两个常数中。

let age = 26
let name = "jack"
print("mylabel.text")
//my output should be "My name is Jack and my age is 26"

我在Swift中寻找类似于Python的函数/方法：

text_from_json = "My name is {0} and my age is {1}"

print("My name is {0} and my age is {1}".format(name, age))

我们在Swift中有任何类似于Python中的.format的函数吗？

Answer 1

Swift非常简单。您需要执行以下操作

    let name = "jacK"
    let age = 26
    //var formattedString = "My name is \(name) and ag is \(age)"
    var formattedString = String(format: "My name is %@ and age is %d", name,age)

根据您的具体情况，您可以

let name = "jacK"
let age = 26
let stringFromJSON = "My name is _ and age is _"
var formattedString = stringFromJSON.replacingOccurrences(of: "_", with: "%@")
 formattedString = String(format: formattedString, name,"\(age)")
print(formattedString)

以上代码有效。

如何在Swift中的动态常量中显示变量值？

1 个答案: