ucg/docsite/site/content/reference/_index.md

+++ title = "The UCG Language Reference" slug = "reference" weight = 3 sort_by = "weight" in_search_index = true +++ An Overview

UCG is an immutable, expression oriented, functional programming language specialized for generating configurations. It has limited IO and a form of forward type inference.

A valid UCG file is composed of a series of statements. Statements can be an expression, introduce named bindings, or create different outputs. All statements must be terminiated by a semicolon. Statements are executed in order. All expressions in ucg return a value. Expressions can see anything declared in their enclosing scope up to the point of their execution.

Scopes in UCG are defined by the ucg file, a function, or a module body.

Some words are reserved in UCG and can not be used as a named binding.

• self
• assert
• true
• false
• let
• import
• as
• in
• is
• not
• fail
• select
• func
• module
• env
• map
• filter
• reduce
• NULL
• out

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