System built-ins

Warning! This page documents an earlier version of Flux, which is no longer actively developed. Flux v0.50 is the most recent stable version of Flux.

When a built-in value is not expressible in Flux, its value may be defined by the hosting environment. All such values must have a corresponding builtin statement to declare the existence and type of the built-in value.

BuiltinStatement = "builtin" identifer ":" TypeExpression
Example
builtin from : (bucket: string, bucketID: string) -> stream