[Jprogramming] Mapped files & copy

[Anssi Seppälä]

Thanks, I was first confused with ]. My version is now
my_noun=: 0 }. mapped_noun


At 19:40 6.8.2007, you wrote:
>my_noun=: 0 + mapped_noun
>my_noun=: ($ ($,) ]) mapped_noun
>
>... and various other identity functions, except for ] and [ .
>
>
>
>----- Original Message -----
>From: Anssi Seppälä <anssi.seppala at enease.fi>
>Date: Monday, August 6, 2007 8:32
>Subject: [Jprogramming] Mapped files & copy
>To: Programming forum <programming at jsoftware.com>
>
> > I must store big J array (1000000 * 10 ) data in mapped files
> > because
> > it is the only way to store big arrays where the size is beyound
> > of
> > limits of jfiles .
> >
> > However I meet a problem when I try to copy data from a mapped
> > file
> > to J workspace.
> >
> > After mapping  and assign: my_noun =: mapped _noun. The
> > probelm is to
> > unmap mapped_noun and keep the data in my_noun for further
> > manipulation. The problem os obviously tat the data is not
> > copied to my_noun.
> >
> > What is the fastest way to say my_noun =: mapped _noun so that
> > the
> > data is really copied to my_noun?
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