vector<int>nums;//不指定长度 vector<int>nums(n); // 指定长度为n 添加元素 nums.push_back(1);//直接从数组末端添加 nums[i] = 1;//直接赋值给第i个位置 删除元素 nums.resize(nums.size-i); //直接将数组长度减小,某种方式上删掉了后面i个 nums.pop_back();//删掉最后一个元素 数组遍历 for(...
代码来源:dremio/dremio-ossIntReaderImpl.copyAsField(...)public void copyAsField(String name, StructWriter writer){ IntWriterImpl impl = (IntWriterImpl) writer.integer(name); impl.vector.copyFromSafe(idx(), impl.idx(), vector); } 代码来源:org.apache.arrow/arrow-vector...
integer("nums").writeInt(14); final StructWriter repeatedMap = struct.list("b").struct(); repeatedMap.start(); repeatedMap.integer("c").writeInt(1); repeatedMap.end(); repeatedMap.start(); repeatedMap.integer("c").writeInt(2); repeatedMap.bigInt("x").writeBigInt(15); repeated...
将Object对象转换为Integer对象。然后让自动装箱隐式地将Integer对象更改为int原语。
(MappifyUtility.fieldValue));break;caseSMALLINT:ComplexCopier.copy(fieldReader,(FieldWriter)structWriter.smallInt(MappifyUtility.fieldValue));break;caseBIGINT:ComplexCopier.copy(fieldReader,(FieldWriter)structWriter.bigInt(MappifyUtility.fieldValue));break;caseINT:ComplexCopier.copy(fieldReader,(Field...