Hacker Read

legulere · 2022-10-14 14:20:17

The trick is to not copy the data, but to pass pages around.

jakub_jo | karma 127 | avg karma 4.23 · | 2022-10-25 03:23:39

Or better: The data URI gets copied.

the8472 | karma 12236 | avg karma 2.77 · | 2020-05-16 22:25:33+00:00

You could treat them as files and use the file copy-paste mechanism.

londons_explore | karma 35497 | avg karma 2.72 · | 2023-07-10 10:32:20

But that makes a copy first, and only later notices that the pages are the same and merges them again.

Better to not make copies in the first place.

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Aeolun | karma 23207 | avg karma 2.16 · | 2021-09-22 20:56:47

True, but flipping through the book to copy all pages is too much effort to copy the file to my remarkable instead.

JackFr | karma 14057 | avg karma 3.9 · | 2021-05-07 16:52:35+00:00

You have to copy less than you think. Because the data is immutable, you can share everything but the changed fields.

huachimingo | karma 223 | avg karma 1.28 · | 2021-11-28 09:35:20

In one case, the fastest way would be to not have to copy it, just reuse the same file.

va_coder | karma 1963 | avg karma 4.19 · | 2010-04-19 08:58:43

Just copy them using File -> Copy

hacknat | karma 3102 | avg karma 3.16 · | 2013-12-02 21:37:24+00:00

Transferables are fast, but they are still a copy operation.

Tommstein | karma 609 | avg karma 1.65 · | 2023-09-16 16:40:34

I'm pretty sure it's the reference that makes the data not be copied.

markstos | karma 2409 | avg karma 3.36 · | 2022-04-12 14:04:44

You can still use File: Copy for a second, unrelated copy.

_asummers | karma 2533 | avg karma 2.81 · | 2017-07-11 23:42:08

With OTP20, copying data isn't always necessary anymore :)

saagarjha | karma 56017 | avg karma 2.29 · | 2018-05-10 21:28:58

Is there a way to do this without involving the overhead of a full copy, though?

jaimex2 | karma 1709 | avg karma 1.53 · | 2019-08-31 12:49:27+00:00

read, not copy. They upload the files up to their servers.

NLPaep | karma 98 | avg karma 1.13 · | 2023-03-28 22:42:41

Nah, it’s just easy to copy if you lay it out. It’s software.

pradn | karma 4976 | avg karma 4.37 · | 2018-08-15 19:19:27

Do you really need to do a full copy? What if you had a shared page and notified the user process when the data in the page was available at a certain offset.

Take a look at this paper (FlexSC: Flexible System Call Scheduling with Exception-Less System Calls):

https://www.usenix.org/legacy/event/osdi10/tech/full_papers/...

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access_denied | karma 709 | avg karma 1.12 · | 2010-01-02 17:08:57

The problem with that: retain meta-info when copying from machine to machine. Otherwise: yes.

causality0 | karma 7479 | avg karma 3.77 · | 2022-09-10 18:33:16

These days I just use a network file browser to copy files. Easier that way.

brudgers | karma 49350 | avg karma 2.35 · | 2023-12-22 13:16:53

Or on Windows, Xcopy.

StefanKarpinski | karma 5439 | avg karma 5.91 · | 2015-09-28 14:43:11+00:00

There's already a copy function that does this.