Implementing and optimizing a simple graph metric

bearophile bearophileHUGS at
Thu Sep 26 14:29:41 PDT 2013

Joseph Rushton Wakeling:

> So it's bizarre that there is a performance difference here.

Bizarre findings deserve more experiments and studies :-)

> Incidentally, this was why I felt safe using uninitializedArray 
> for arrays of e.g. long, size_t, etc., because the only 
> difference at the end of the function could be whether the 
> values contained in the array have been set or not.  As I do 
> ensure that any array entry used also has its value set, it 
> should be OK.

You also have arrays of T. Someday T could be something with 
indirections :-) So minimallyInitializedArray is safer regarding 
future changes in your code.


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