目标C保持快速双精度

用swift创建的双精度

let d: Double = 1.0

当传递到目标C时,不会保留 .0 . 结果是 1 .

有保存的方法吗 0 目标C中的整个双打?

编辑:

我要做的是:

Parent.m

 @implementation Parent

-(void)log:(NSDictionary*)data {
}

 @end

Parent.h

@interface Parent : NSObject

-(void)log:(NSDictionary*)data;

@end

Child.swift

class Child: Parent {

    func log() {
      let measure = Double(1)
      let isLoggedIn = false
      let data: [String: Any] = ["is_logged_in": isLoggedIn, "measure": measure]
      log(data) // calling parent method, measure ends up as 1
    }

}