Runtime Values

Nubo exposes a small set of runtime values and helper functions that are always available.

Version

Use __version__ to access the current Nubo version:

println(__version__)

Runtime Variables

Nubo automatically declares runtime variables for the currently running interpreter and file.

Variable	Type	Description
__id__	int	The numeric interpreter/runtime ID.
__entry__	bool	true when the current file is running as the entry interpreter, usually ID 1.
__dir__	string	Absolute directory path of the current file.
__file__	string	Absolute file path of the current file.
__concurrent__	bool	Runtime concurrency flag. Defaults to false.

Example:

println(__id__)
println(__entry__)
println(__dir__)
println(__file__)
println(__concurrent__)

These values are useful for loading files relative to the current script:

include __dir__ + "/config"

If the included path has no extension, Nubo automatically tries it as a .nubo file.

Inspect

Use inspect() to inspect values:

import io from "@std/io"

println(inspect(io.read))

Type

Use type() to inspect the type of a value:

let s: string|nil = "Hello"
println(s, type(s))

Value Of

Use valueof() to get the underlying value representation:

import { now } from "@std/time"

println(valueof(now()))

Conversions

Call a type like a function to convert a value:

import { now } from "@std/time"

println(int(now()))

You can also use conversions in collection pipelines:

let x: int = 0

bytes("hello").map(int).each(fn(n: int) {
    x = x + n
})

println(x)