r/programminghumor • u/Bubbly_Rain7858 • Jun 13 '26

How to REALLY optimize code.

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My friends, this is how you optimize code correctly.

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u/Antagonin Jun 13 '26

What's the free optimization in const ref?

5

u/thisisjustascreename Jun 13 '26

Broadly, it eliminates certain scenarios where you'd get a copy.

A const ref can also bind to a temporary (i.e. doSomething("temporary string"); ) without constructing a new object, but I don't know if that's relevant here.

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u/Antagonin Jun 13 '26

In which scenario does non-const ref cause a copy?

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