Swift 中的 localizeWithFormat 和可变参数 [英] localizeWithFormat and variadic arguments in Swift
本文介绍了Swift 中的 localizeWithFormat 和可变参数的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在尝试创建一个字符串扩展来做类似的事情
I am trying to create a String extension to do something like that
"My name is %@. I am %d years old".localizeWithFormat("John", 30)
看起来像这样
extension String {
func localizeWithFormat(arguments: CVarArgType...) -> String {
return String.localizedStringWithFormat(
NSLocalizedString(self,
comment: ""), getVaList(arguments))
}
}
它给了我以下编译错误
类型 CVaListPointer 不符合协议 CVargType
Type CVaListPointer does not conform to protocol CVargType
有人知道如何解决这个编译错误吗?
Anyone knows how to work aroundthis compilation error?
推荐答案
这应该很简单,只需将参数更改如下:
This should be pretty simple just change your parameters as follow:
extension String {
func localizeWithFormat(name:String,age:Int, comment:String = "") -> String {
return String.localizedStringWithFormat( NSLocalizedString(self, comment: comment), name, age)
}
}
"My name is %@. I am %d years old".localizeWithFormat("John", age: 30) // "My name is John. I am 30 years old"
init(format:locale:arguments:)
extension String {
func localizeWithFormat(args: CVarArgType...) -> String {
return String(format: self, locale: nil, arguments: args)
}
func localizeWithFormat(local:NSLocale?, args: CVarArgType...) -> String {
return String(format: self, locale: local, arguments: args)
}
}
let myTest1 = "My name is %@. I am %d years old".localizeWithFormat(NSLocale.currentLocale(), args: "John",30)
let myTest2 = "My name is %@. I am %d years old".localizeWithFormat("John",30)
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