Add scandir#62164
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Split out of JuliaLang#55358 at triage's request, stacked on the `DirEntry` / `readdir(dir, DirEntry)` work. `scandir(dir)` returns a stateful, single-pass `DirEntryIterator` that streams filename `String`s one entry at a time via `uv_fs_opendir` / `uv_fs_readdir`, without first materializing the full listing. This is useful for very large directories or when iteration is short-circuited (e.g. `break` or `Iterators.take`). `scandir(dir, DirEntry)` yields `DirEntry` objects instead, and a do-block form `scandir(f, dir[, DirEntry])` releases the underlying directory handle as soon as `f` returns; otherwise cleanup happens at end-of-iteration, on `close`, or via a finalizer. The element-type selector uses a trailing type argument to match `readdir(dir, DirEntry)`. New runtime helpers `jl_uv_fs_opendir`, `jl_uv_fs_readdir`, and `jl_uv_fs_closedir` wrap the libuv directory API and hide the `uv_dir_t` layout from Julia. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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IanButterworth
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Jun 19, 2026
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Adds
scandir, a lazy version ofreaddir