allocRemaining() help

[Sze]

@chrischtel

var reader = file.reader(temp[0..]).interface;

0.15.1 Reader/Writer

/// Read all lines from file. fn readLines(e: *Editor, file: std.fs.File) !void { var buf: [1024 * 1024]u8 = undefined; var reader = file.reader(&buf).interface; while (reader.takeDelimiterExclusive('\n')) |line| { try e.insertRow(e.buffer.rows.items.len, line); } else |err| if (err != error.EndOfStream) return err; } The problem you were running into was that std.fs.File.Reader needs to remain allocated. You made a copy of the std.Io.Reader interface, and then used that. …

0.15.1 Reader/Writer

The key insight you’re missing is that reader() creates a thing that needs to live somewhere. var file_reader = file.reader(&buf); // this var needs the same lifetime as `buf` const reader = &file_reader.interface; // `reader` not reassigned, so use `const`