# tensorflow::ops::Substr::Attrs

`#include <string_ops.h>`

Optional attribute setters for [Substr](https://www.tensorflow.org/versions/r2.0/api_docs/cc/class/tensorflow/ops/substr#classtensorflow_1_1ops_1_1_substr).

## Summary

| ### Public attributes ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/substr/attrs#structtensorflow_1_1ops_1_1_substr_1_1_attrs_1a7c385269db54d4c3e74fb0cd18cd739e = "BYTE"` | `StringPiece` |

| ### Public functions ||
|---|---|
| `https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/substr/attrs#structtensorflow_1_1ops_1_1_substr_1_1_attrs_1af6db7bd9466518c3de8793eeb8372886(StringPiece x)` | `TF_MUST_USE_RESULT https://www.tensorflow.org/versions/r2.0/api_docs/cc/struct/tensorflow/ops/substr/attrs#structtensorflow_1_1ops_1_1_substr_1_1_attrs` The unit that is used to create the substring. |

## Public attributes

### unit_

```
StringPiece tensorflow::ops::Substr::Attrs::unit_ = "BYTE"
```

## Public functions

### Unit

```
TF_MUST_USE_RESULT Attrs tensorflow::ops::Substr::Attrs::Unit(
  StringPiece x
)
```
The unit that is used to create the substring.

One of: `"BYTE"` (for defining position and length by bytes) or `"UTF8_CHAR"` (for the UTF-8 encoded Unicode code points). The default is `"BYTE"`. Results are undefined if `unit=UTF8_CHAR` and the `input` strings do not contain structurally valid UTF-8.

Defaults to "BYTE"