> How is it that people simultaneously believe > 1) GC makes a language slow, and > 2) Go is fast?

Easy one: either not the same people, or people holding self contradicting thoughts.

GC are slow not only because of scanning the memory but also because of the boxing. In my experience, 2 to 3 times slower.

Still a better tradeoff in the vast majority of cases over manual memory management. A GC is well worth the peace of mind.

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quotemstr 3 days ago | parent [-]

> also because of the boxing

Not every GC boxes primitives. Most don't.

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rixed 3 days ago | parent [-]

Sure. What about non primitives?

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pjmlp 2 days ago | parent [-]

CLU, Cedar, Modula-2+, Modula-3, Oberon, Oberon-2, Oberon-07, Active Oberon, Component Pascal, Eiffel, Sather, BETA, D, Nim, Swift, C#, F# are all examples of GC based languages with value types that can be used without any kind of boxing.

	▲	rixed 2 days ago \| parent [-]
		Impressive erudition and interresting list of nice languages, some of which I'd never heard about, thank you. Yes indeed not all GCed languages suffer from mandatory boxing. I've been both picky and wrong, which is not a nice place to find oneself in :)