[erlang-questions] How to efficiently set the bit at position Index to 1 in a binary?

[Zabrane Mickael]

On Dec 25, 2011, at 8:19 PM, Torben Hoffmann wrote:

> Following that you can write it like:
> set2(N, Bin) ->
> <<L:N/bits, _:1, R/bits>> = Bin, % LINE 271
> <<L/bits, 1:1, R/bits>>.


on my machine (R15B, R14B04), the warning is still reported.
src/foo.erl:271: Warning: NOT OPTIMIZED: sub binary is used or returned

Regards,
Zabrane

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