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如何将地图视图的可见矩形转换为 CLRegion 以与 CLGeocoder 一起使用？
哦，我刚刚在这里找到了这个答案： https ://gist.github.com/3402711
我得到无法转储匿名类错误。
我的模型中有以下方法。
def seating_for(active) ln = cache(col("lu", active)) do self.seat_list_for(active).where(seat_id: self.seat