Re: is using memcopy() to manipulate arrays appropriate??
On 2013-10-10 08:38, James K. Lowden wrote:
You seem to assume here that syndrome is initialized to zeros. It's
not, or at least won't always be. You can say
int syndrome[4] = {0};
because the standard says that remaining elements are initialized to
the the last provided initialization value. Roughly.
Actually the wording says that the remaining elements will be
initialized with empty list initialization, therefore the first value is
not needed at all. Personally I always recommend to use the more
generally valid (and more concise) form
int syndrome[4] = {};
instead that has already been guaranteed to work as expected in C++03.[1]
Unfortunately there still exists modern compilers that spit warnings on
that construction with misleading contents. If you meet such a compiler,
this is a good occasion to send a corresponding bug report to the vendor ;-)
HTH & Greetings from Bremen,
Daniel Kr?gler
[1] C++03 says that {} causes value-initialization for all elements of
an aggregate and in C++11 it says that empty list initialization is
performed, but for well-formed C++03 code this doesn't make any difference.
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