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@polac24
Created March 31, 2019 18:01
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class ArgRecords<T>{
private(set) var history: [T] = []
func record(_ t: T){
history.append(t)
}
subscript(_ i: Int) -> T? {
guard i < history.count else {return nil}
return history[i]
}
var count: Int {
return history.count
}
}
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