if it is not constant, it must be variable i.e. changing. Mutation = change. | Hacker News

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bruce343434 on Feb 4, 2022 | parent | context | favorite | on: What I'd like to see in Go 2.0

if it is not constant, it must be variable i.e. changing. Mutation = change.

ackfoobar on Feb 4, 2022 | [–]

def plusOne(x: Int) { val y = x + 1; return y }

In the line of code above, `y` is an immutable variable. It does not mutate, yet it "varies" as different values of x come in.

avgcorrection on Feb 4, 2022 | [–]

No. A variable in mathematics does not change (mutate). And yet it is not a constant.

You’re thinking inside the imperative programming box.

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