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John Carmack on mutable variables

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504 points azhenley | 1 comments | 31 Oct 25 02:34 UTC | HN request time: 0.249s | source
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EastLondonCoder ◴[31 Oct 25 09:30 UTC] No.45770007[source]▶
After a 2 year Clojure stint I find it very hard to explain the clarity that comes with immutability for programmers used to trigger effects with a mutation.

I think it may be one of those things you have to see in order to understand.

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ErroneousBosh ◴[31 Oct 25 13:23 UTC] No.45771722[source]▶
I guess I'm not that good a programmer, because I don't really understand why variables that can't be varied are useful, or why you'd use that.

How do you write code that actually works?

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1. ◴[02 Nov 25 03:12 UTC] No.45787597[source]▶