romainfrancois commented on pull request #8256:
URL: https://github.com/apache/arrow/pull/8256#issuecomment-698808913
``` r
library(tidyverse)
brio::read_lines("~/git/apache/arrow/r/src/arrowExports.cpp") %>%
str_subset("^std::[a-z]+_ptr<") %>%
str_remove(" .*$") %>%
unique() %>%
str_remove("^.*<") %>%
str_remove(">")
#> [1] "arrow::Array" "arrow::DataType"
#> [3] "arrow::ArrayData" "arrow::ChunkedArray"
#> [5] "arrow::Buffer" "arrow::util::Codec"
#> [7] "arrow::io::CompressedOutputStream"
"arrow::io::CompressedInputStream"
#> [9] "arrow::compute::CastOptions" "arrow::RecordBatch"
#> [11] "arrow::Table" "arrow::csv::ReadOptions"
#> [13] "arrow::csv::ParseOptions" "arrow::csv::ConvertOptions"
#> [15] "arrow::csv::TableReader" "ds::ScannerBuilder"
#> [17] "arrow::Schema" "ds::Dataset"
#> [19] "ds::UnionDataset" "ds::InMemoryDataset"
#> [21] "ds::FileFormat" "fs::FileSystem"
#> [23] "ds::DatasetFactory" "ds::ParquetFileFormat"
#> [25] "ds::IpcFileFormat" "ds::CsvFileFormat"
#> [27] "ds::Partitioning" "ds::PartitioningFactory"
#> [29] "ds::Scanner" "arrow::Field"
#> [31] "ds::Expression" "arrow::ipc::feather::Reader"
#> [33] "fs::FileSelector" "arrow::io::InputStream"
#> [35] "arrow::io::RandomAccessFile" "arrow::io::OutputStream"
#> [37] "fs::LocalFileSystem" "fs::SubTreeFileSystem"
#> [39] "fs::S3FileSystem" "arrow::io::MemoryMappedFile"
#> [41] "arrow::io::ReadableFile" "arrow::io::BufferReader"
#> [43] "arrow::io::FileOutputStream" "arrow::io::BufferOutputStream"
#> [45] "arrow::json::ReadOptions" "arrow::json::ParseOptions"
#> [47] "arrow::json::TableReader" "arrow::MemoryPool"
#> [49] "arrow::ipc::MessageReader" "arrow::ipc::Message"
#> [51] "parquet::ArrowReaderProperties" "parquet::arrow::FileReader"
#> [53] "parquet::ArrowWriterProperties"
"parquet::WriterPropertiesBuilder"
#> [55] "parquet::WriterProperties" "parquet::arrow::FileWriter"
#> [57] "arrow::RecordBatchReader"
"arrow::ipc::RecordBatchFileReader"
#> [59] "arrow::ipc::RecordBatchWriter" "arrow::Scalar"
```
<sup>Created on 2020-09-25 by the [reprex
package](https://reprex.tidyverse.org) (v0.3.0.9001)</sup>
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