Help use writePositional

JPL · November 20, 2025, 12:19pm

hello

example to use please

writePositional(file: File, io: Io, buffer: [][]const u8, offset: u64)

squeek502 · November 20, 2025, 12:36pm

It’s not implemented yet:

github.com/ziglang/zig

lib/std/Io/Threaded.zig

7b325e08c


      
          fn fileWritePositional(
              userdata: ?*anyopaque,
              file: Io.File,
              buffer: [][]const u8,
              offset: u64,
          ) Io.File.WritePositionalError!usize {
              const t: *Threaded = @ptrCast(@alignCast(userdata));
              while (true) {
                  try t.checkCancel();
                  _ = file;
                  _ = buffer;
                  _ = offset;
                  @panic("TODO implement fileWritePositional");
              }
          }

JPL · November 20, 2025, 2:22pm

buffer: [][]const
I have never used this type

in the three years I have been doing zig

but always [] const u8 or arraylist etc.

How do I transfer [] const u8 [][] u8?

Please