# Io Ops

# Io Ops

## Summary

| ### Classes ||
|---|---|
| [tensorflow:: ops:: FixedLengthRecordReader](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/fixed-length-record-reader) | A Reader that outputs fixed-length records from a file. |
| [tensorflow:: ops:: IdentityReader](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/identity-reader) | A Reader that outputs the queued work as both the key and value. |
| [tensorflow:: ops:: LMDBReader](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/l-m-d-b-reader) | A Reader that outputs the records from a LMDB file. |
| [tensorflow:: ops:: MatchingFiles](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/matching-files) | Returns the set of files matching one or more glob patterns. |
| [tensorflow:: ops:: MergeV2Checkpoints](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/merge-v2-checkpoints) | V2 format specific: merges the metadata files of sharded checkpoints. |
| [tensorflow:: ops:: ReadFile](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/read-file) | Reads and outputs the entire contents of the input filename. |
| [tensorflow:: ops:: ReaderNumRecordsProduced](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/reader-num-records-produced) | Returns the number of records this Reader has produced. |
| [tensorflow:: ops:: ReaderNumWorkUnitsCompleted](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/reader-num-work-units-completed) | Returns the number of work units this Reader has finished processing. |
| [tensorflow:: ops:: ReaderRead](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/reader-read) | Returns the next record (key, value pair) produced by a Reader. |
| [tensorflow:: ops:: ReaderReadUpTo](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/reader-read-up-to) | Returns up to ` num_records ` (key, value) pairs produced by a Reader. |
| [tensorflow:: ops:: ReaderReset](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/reader-reset) | [Restore](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/restore#classtensorflow_1_1ops_1_1_restore) a Reader to its initial clean state. |
| [tensorflow:: ops:: ReaderRestoreState](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/reader-restore-state) | [Restore](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/restore#classtensorflow_1_1ops_1_1_restore) a reader to a previously saved state. |
| [tensorflow:: ops:: ReaderSerializeState](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/reader-serialize-state) | Produce a string tensor that encodes the state of a Reader. |
| [tensorflow:: ops:: Restore](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/restore) | Restores a tensor from checkpoint files. |
| [tensorflow:: ops:: RestoreSlice](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/restore-slice) | Restores a tensor from checkpoint files. |
| [tensorflow:: ops:: RestoreV2](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/restore-v2) | Restores tensors from a V2 checkpoint. |
| [tensorflow:: ops:: Save](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/save) | Saves the input tensors to disk. |
| [tensorflow:: ops:: SaveSlices](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/save-slices) | Saves input tensors slices to disk. |
| [tensorflow:: ops:: SaveV2](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/save-v2) | Saves tensors in V2 checkpoint format. |
| [tensorflow:: ops:: ShardedFilename](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/sharded-filename) | Generate a sharded filename. |
| [tensorflow:: ops:: ShardedFilespec](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/sharded-filespec) | Generate a glob pattern matching all sharded file names. |
| [tensorflow:: ops:: TFRecordReader](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/t-f-record-reader) | A Reader that outputs the records from a TensorFlow Records file. |
| [tensorflow:: ops:: TextLineReader](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/text-line-reader) | A Reader that outputs the lines of a file delimited by ' '. |
| [tensorflow:: ops:: WholeFileReader](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/whole-file-reader) | A Reader that outputs the entire contents of a file as a value. |
| [tensorflow:: ops:: WriteFile](https://www.tensorflow.org/versions/r2.5/api_docs/cc/class/tensorflow/ops/write-file) | Writes contents to the file at input filename. |