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Evolving the Go Standard Library with math/rand/v2
Go 1.23 adds math/rand/v2 and charts a course for the evolution of the Go standard library.
The algorithm is based on an idea by George Marsaglia, tweaked by Don Mitchell and Jim Reeds, and further customized by Ken Thompson for Plan 9 and then Go. From Go 1 through around Go 1.5, we went back and drew the “fully inked” version of each of these: we converted the compiler and runtime to Go; we wrote a new, precise, parallel, concurrent garbage collection with microsecond pause times; and we replaced standard library implementations with more sophisticated, optimized algorithms as needed. In practice, that means we take the existing package as the starting point and only make changes that are well motivated and provide a value that justifies the cost to users of updating.
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