C++链式编程初体验

最近，在看TensoFlow源码时，看到链式编程的代码，贴出来一点：

#include "tensorflow/core/framework/common_shape_fns.h"
#include "tensorflow/core/framework/numeric_op.h"
#include "tensorflow/core/framework/op.h"
#include "tensorflow/core/framework/shape_inference.h"

namespace tensorflow {

REGISTER_OP("Invert")
    .Input("x: T")
    .Output("y: T")
    .Attr("T: {int8, int16, int32, int64, uint8, uint16, uint32, uint64}")
    .SetShapeFn(shape_inference::UnchangedShape);

#define BINARY_BITWISE()                                                     \
  Input("x: T")                                                              \
      .Input("y: T")                                                         \
      .Output("z: T")                                                        \
      .Attr("T: {int8, int16, int32, int64, uint8, uint16, uint32, uint64}") \
      .SetShapeFn(shape_inference::BroadcastBinaryOpShapeFn)

#define BINARY_BITWISE_COMMUTATIVE()