Is there an equivalent to "Open Update"

Asked Feb 28 '20 at 18:43

Active Feb 29 '20 at 00:33

Viewed 32 times

I'm writing a binary file that contains a header followed by the data. The header contains the length of the data.

The data is written first, skipping past the header. Once done, I would like to update the data length in the header (something easily done in C). Mathematica won't let me use SetStreamPosition as the stream is opened for output.

Does anyone have a suggestion?

edited Feb 29 '20 at 00:33

m_goldberg

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asked Feb 28 '20 at 18:43

Leon

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I'm pretty sure this impossible since I think I heard a developer complain about it in one of WRI's live streams, but is definitely something the language should support – b3m2a1 Feb 29 '20 at 03:47

Is there an equivalent to "Open Update"

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