sub nBitsAt{
    my( $n, $offset, $bits ) = @_;
    return unpack "x[A$offset] A$n", unpack "B*", $bits;
}

print nBitsAt( 13, 11, "\x47\x69\x01" );;
0100100000001

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In reply to Re: accessing bits in a file by BrowserUk
in thread accessing bits in a file by andreyb051

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