I am looking for advice on appending to large mapped files (yes, I
confess, it's the Netflix data).

I have a name f mapped to a file containing a list of integers, and I want
to append a list a from memory.  I am essentially doing this by

for_i. a do.
additem_jmf_ 'f'
f=:i (_1) } f
end.

Is this what I am supposed to be doing, or is there a better way?

John


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