Standard library reference

The arr.ai standard library is available via the // syntax.

Packages

The following standard packages are available:

• //archive: Archive format utilities
• //bits: Bit utilities
• //encoding: Support for encoded data processing
• //eval: Evaluate strings holding arr.ai code
• //fmt: String formatting utilities
• //fn: Function manipulation utilities
• //grammar: Grammar features & processing
• //log: Print utilities
• //math: Math operations and functions
• //net: Network utilities
• //os: OS support
• //re: Regular expressions
• //rel: Relational operations
• //seq: Sequence utilities
• //str: String utilities
• //test: String utilities

Core functions

The following functions are available at the root of the standard library.

//dict(t <: tuple) <: dict

dict converts the tuple t to a dictionary.

Usage:

example	equals
//dict(())	{}
//dict((a: 1, b: 2))	{"a": 1, "b": 2}

//tuple(d <: dict) <: tuple

tuple converts the dictionary d to a tuple. All keys must be strings. The operation is shallow, so dictionary-structured values won't be converted.

Usage:

example	equals
//tuple({})	()
//tuple({"a": 1, "b": 2})	(a: 1, b: 2)