andylokandy commented on PR #6652: URL: https://github.com/apache/arrow-rs/pull/6652#issuecomment-2447573349
I'm the member of [databend](https://github.com/databendlabs/databend), which heavily adopt arrow-rs and I'm sure it is a very common pattern that constructing an item in a StringArrayBuilder/BinaryArrayBuilder by several parts of `&str` or `&[u8]`. For example, to add a &[0x20] padding before each item of BinaryArray to generate a new BinaryArray, we can do the following: ```rust for x in array.iter() { write!(&mut builder, b" ").unwrap(); write!(&mut builder, x).unwrap(); builder.append_value(""); } ``` Moreover, `StringBuilder` has already supported [this pattern](https://docs.rs/arrow/latest/arrow/array/builder/type.GenericStringBuilder.html#:~:text=This%20builder%20also%20implements%20std%3A%3Afmt%3A%3AWrite%20with%20any%20written%20data%20included%20in%20the%20next%20appended%20value.%20This%20allows%20using%20std%3A%3Afmt%3A%3ADisplay%20with%20standard%20Rust%20idioms%20like%20write!%20and%20writeln!%20to%20write%20data%20directly%20to%20the%20builder%20without%20intermediate%20allocations.). We use it in databend smoothly and we hope BinaryBuilder can have the same ability. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
