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Question by logan4179 · Jun 13, 2017 at 08:38 PM · transformpositionvector3vector

Question about Vector creation

If this has been asked before I'm sorry, I couldn't figure out what to type in google to find the answer!

I have the option of either creating a named Vector at the top of my code class with something like:

           Vector3 myVector = new Vector3( 0, 0, 4.0f);

...and then using/updating this vector to a different value as needed in a method such as the update method like;

 void Update ()
 {
     transform.position += myVector;
 }


or I could not create that named vector at the top and inside one of my methods I could do something like this:

 void Update ()
 {
     transform.position += new Vector3(normalSpeed, 0, 0);
 }

...which seemingly creates like a "throwaway" vector that's not named and presumably discarded.

I'm interested to know; what are the considerations/differences? Should I always use the named Vector method where possible to save memory? If so, why do a lot of tutorials use the "throwaway" method?

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Answer by migueeel · Jun 14, 2017 at 12:05 AM

My wild guess is that if you're going to use the vector only once, do the throwaway version as you don't need to store a variable that you'll use once.

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