add "ARROW_VERSION" const (#6379)

Author: samuelcolvin

arrow/examples/README.md

@@ -25,3 +25,4 @@
 - [`read_csv.rs`](read_csv.rs): Reading CSV files with explicit schema, pretty printing Arrays
 - [`read_csv_infer_schema.rs`](read_csv_infer_schema.rs): Reading CSV files, pretty printing Arrays
 - [`tensor_builder.rs`](tensor_builder.rs): Using tensor builder
+- [`version.rs`](version.rs): Print the arrow version and exit

arrow/examples/version.rs

@@ -0,0 +1,24 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+//! Print the arrow version and exit
+
+use arrow::ARROW_VERSION;
+
+fn main() {
+    println!("arrow version: {ARROW_VERSION}");
+}

arrow/src/lib.rs

@@ -361,7 +361,6 @@
 //! [Apache Parquet]: https://parquet.apache.org/
 //! [DataFusion]: https://github.com/apache/arrow-datafusion
 //! [issue tracker]: https://github.com/apache/arrow-rs/issues
-//!
 
 #![deny(clippy::redundant_clone)]
 #![warn(missing_debug_implementations)]
@@ -370,6 +369,9 @@ pub use arrow_array::{downcast_dictionary_array, downcast_primitive_array};
 
 pub use arrow_buffer::{alloc, buffer};
 
+/// Arrow crate version
+pub const ARROW_VERSION: &str = env!("CARGO_PKG_VERSION");
+
 pub mod array;
 pub mod compute;
 #[cfg(feature = "csv")]