datatable.Frame.to_jay()¶
Save this frame to a binary file on disk, in .jay
format.
Parameters¶
path
str
| None
The destination file name. Although not necessary, we recommend
using extension “.jay” for the file. If the file exists, it will
be overwritten.
If this argument is omitted, the file will be created in memory
instead, and returned as a bytes
object.
method
'mmap'
| 'write'
| 'auto'
Which method to use for writing the file to disk. The “write”
method is more portable across different operating systems, but
may be slower. This parameter has no effect when path
is
omitted.