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Re:Snowpack 2.0 by fenomas on Wednesday May 27, 2020 @11:44PM (#23333172)
> An incremental rebuild will still be O(n), but in this case n=1.

TFA explains pretty clearly what claim is being made. They're talking about the cost of rebuilding one file, given the "input" of a project with n files. They claim that for other build systems that cost (the cost of one file) scales linearly with total project size, but for theirs it doesn't.

Your objection here redefines n to be the number of files changed, but they don't claim anything about that.

Re:Snowpack 2.0 by fsociety on Thursday May 28, 2020 @02:47AM (#23334236)
That is misleading, because if I have n project files and I change n files then it runs n rebuilds not one rebuild.
Re:Snowpack 2.0 by fenomas on Thursday May 28, 2020 @03:59AM (#23334685)
They didn't claim anything about the cost of changing multiple files. "Rebuild one file, in a project of size n" is the operation they're examining the performance of.