# tensorflow::ops::Assign

`#include <state_ops.h>`

Update 'ref' by assigning 'value' to it.

## Summary

This operation outputs "ref" after the assignment is done. This makes it easier to chain operations that need to use the reset value.

Arguments:

- scope: A [Scope](https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope) object
- ref: Should be from a `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/variable#classtensorflow_1_1ops_1_1_variable` node. May be uninitialized.
- value: The value to be assigned to the variable.

<br />

Optional attributes (see `https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/assign/attrs#structtensorflow_1_1ops_1_1_assign_1_1_attrs`):

- validate_shape: If true, the operation will validate that the shape of 'value' matches the shape of the [Tensor](https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/tensor#classtensorflow_1_1_tensor) being assigned to. If false, 'ref' will take on the shape of 'value'.
- use_locking: If True, the assignment will be protected by a lock; otherwise the behavior is undefined, but may exhibit less contention.

<br />

Returns:

- `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output`: = Same as "ref". Returned as a convenience for operations that want to use the new value after the variable has been reset.

<br />

| ### Constructors and Destructors ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign_1a9d092527e56dc2c2349ea73d983cf65d(const ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input ref, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input value)` ||
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign_1a8ba8288a592f24c065bcae0d32b770f6(const ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/scope#classtensorflow_1_1_scope & scope, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input ref, ::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/input#classtensorflow_1_1_input value, const https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/assign/attrs#structtensorflow_1_1ops_1_1_assign_1_1_attrs & attrs)` ||

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign_1a5d4c946cbed23867a165f2da7f908730` | `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/operation#classtensorflow_1_1_operation` |
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign_1a20cf92e3af8c7164b3eb17ee05479ac2` | `::https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/output#classtensorflow_1_1_output` |

| ### Public functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign_1a4ec3c136c0a49e9b3e9312cdb704455f() const ` | `::tensorflow::Node *` |
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign_1a3a8d284c3415f19eb7954bbf703b7af2() const ` | ` `` ` |
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign_1aedefc46ede817c8851373351603d9508() const ` | ` `` ` |

| ### Public static functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign_1a013fcdc58dfe9ea5bfd88550e231d936(bool x)` | `https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/assign/attrs#structtensorflow_1_1ops_1_1_assign_1_1_attrs` |
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign_1adfed4e6b56c404a19c1a4eb89e4277c8(bool x)` | `https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/assign/attrs#structtensorflow_1_1ops_1_1_assign_1_1_attrs` |

| ### Structs ||
|---|---|
| [tensorflow::ops::Assign::Attrs](https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/assign/attrs) | Optional attribute setters for [Assign](https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/assign#classtensorflow_1_1ops_1_1_assign). |

## Public attributes

### operation

```
Operation operation
```

### output_ref

```
::tensorflow::Output output_ref
```

## Public functions

### Assign

```
 Assign(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input ref,
  ::tensorflow::Input value
)
```

### Assign

```
 Assign(
  const ::tensorflow::Scope & scope,
  ::tensorflow::Input ref,
  ::tensorflow::Input value,
  const Assign::Attrs & attrs
)
```

### node

```
::tensorflow::Node * node() const 
```

### operator::tensorflow::Input

```
 operator::tensorflow::Input() const 
```

### operator::tensorflow::Output

```
 operator::tensorflow::Output() const 
```

## Public static functions

### UseLocking

```
Attrs UseLocking(
  bool x
)
```

### ValidateShape

```
Attrs ValidateShape(
  bool x
)
```