Can somone explane @Type and how it works

Help
,
9

the default value can’t be null if .comptime = true
this is the “working” solution

pub fn frame(comptime _scema: type) !type {
    switch (@typeInfo(_scema)) {
        .Struct => |st| {
            var Struc_fields: [st.fields.len]std.builtin.Type.StructField = undefined;
            for (st.fields, 0..) |F, i| {
                Struc_fields[i] = .{
                    .name = F.name,
                    .type = column(F.type),
                    .default_value = null,
                    .is_comptime = false,
                    .alignment = 4,
                };
            }
            const ret: type = @Type(.{ .Struct = .{
                .fields = &Struc_fields,
                .layout = .auto,
                .is_tuple = false,
                .decls = &.{},
            } });
            return ret;
        },
        else => {
            @compileError("Not a struct");
        },
    }
}