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diff --git a/doc/spec.md b/doc/spec.md index 89f66dd..1f188cc 100644 --- a/doc/spec.md +++ b/doc/spec.md @@ -46,6 +46,11 @@ effects on the host application. As a result, Starlark has no need for classes, exceptions, reflection, concurrency, and other such features of Python. +Starlark execution is _deterministic_: all functions and operators +in the core language produce the same execution each time the program +is run; there are no sources of random numbers, clocks, or unspecified +iterators. This makes Starlark suitable for use in applications where +reproducibility is paramount, such as build tools. ## Contents |