[ARROW-3649] [Rust] Refactor MutableBuffer's resize

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Component/s: Rust
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/19956
• Assignee: Chao Sun
• Reporter: Chao Sun
• Created: 30/Oct/18 07:44
• Updated: 11/Jan/23 07:28
• Resolved: 01/Nov/18 16:01

Description

Currently `MutableBuffer#resize` adjust the buffer's capacity. This is slightly confusing, and is not conforming with Rust's as vector, as well as C++'s buffer impl.

This proposes to rename the `resize` to `reserve`, and modify the current `set_len` to `resize`. We'll also allow `resize` to shrink the buffer so as to free up unnecessary space.

Issue Links

• links to: GitHub Pull Request #2868