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use std::any::type_name; /// 打印变量类型 pub fn print_type_of<T>(_: &T) -> &'static str{ print!("类型是: {}", type_name::<T>()); type_name::<T>() } /// String相关方法 /// 将Vec<u8>转String pub fn vec_to_string(vec: Vec<u8>) -> String { String::from_utf8_lossy(&vec).to_string() }