cyclone/docs/api/scheme/eval.md
2018-02-05 17:21:57 -05:00

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layout: main
title: API
---
# Eval Library
The `(scheme eval)` library exports procedures for evaluating Scheme data as programs.
For more information see the [R<sup>7</sup>RS Scheme Specification](../../r7rs.pdf).
- [`eval`](#eval)
- [`create-environment`](#create-environment)
- [`setup-environment`](#setup-environment)
# eval
(eval expr . environment)
Evaluate `expr` in the specified environment and return the resulting value(s).
A non-standard extension is provided to supply a default global environment if the `environment` argument is not specified.
# create-environment
(create-environment vars values)
A non-standard function to create a new environment on top of the default one.
`vars` is a list of identifiers in the new environment, and `values` is a list of each value assigned to each identifier.
# setup-environment
(setup-environment)
A non-standard function to initialize a new global environment.