NSLog 不可用
NSLog is unavailable
我有以下功能:
func myNSLog(_ givenFormat: String, _ args: CVarArg..., _ function:String = #function) {
let format = "\(function): \(givenFormat)"
NSLog(format, args)
这会导致以下错误:
'NSLog' has been explicitly marked unavailable here (Foundation.NSLog)
在文档中明确列为可用。我想念什么?
与C类似,不能直接传递可变参数列表
到另一个功能。您必须创建一个 CVaListPointer
(Swift
相当于 va_list
) 并将其传递给 NSLogv
变体:
func myNSLog(_ givenFormat: String, _ args: CVarArg..., _ function:String = #function) {
let format = "\(function): \(givenFormat)"
withVaList(args) { NSLogv(format, [=10=]) }
}
(Swift 3 个代码。)
我有以下功能:
func myNSLog(_ givenFormat: String, _ args: CVarArg..., _ function:String = #function) {
let format = "\(function): \(givenFormat)"
NSLog(format, args)
这会导致以下错误:
'NSLog' has been explicitly marked unavailable here (Foundation.NSLog)
在文档中明确列为可用。我想念什么?
与C类似,不能直接传递可变参数列表
到另一个功能。您必须创建一个 CVaListPointer
(Swift
相当于 va_list
) 并将其传递给 NSLogv
变体:
func myNSLog(_ givenFormat: String, _ args: CVarArg..., _ function:String = #function) {
let format = "\(function): \(givenFormat)"
withVaList(args) { NSLogv(format, [=10=]) }
}
(Swift 3 个代码。)