---
layout: main
title: API
---

# Util Library

The `(scheme cyclone util`) library contains various utility functions.

- [`Cyc-er-compare?            `](#Cyc-er-compare)
- [`Cyc-er-rename              `](#Cyc-er-rename)
- [`app?                       `](#app)
- [`begin?                     `](#begin)
- [`const?                     `](#const) 
- [`define->exp                `](#define-exp) 
- [`define->var                `](#define-var)
- [`define-c?                  `](#define-c)
- [`define?                    `](#define)
- [`delete                     `](#delete)
- [`delete-duplicates          `](#delete-duplicates)
- [`env:_lookup-variable-value `](#envlookup-variable-value)
- [`env:add-binding-to-frame!  `](#envadd-binding-to-frame)
- [`env:all-values             `](#envall-values)
- [`env:all-variables          `](#envall-variables)
- [`env:define-variable!       `](#envdefine-variable) 
- [`env:enclosing-environment  `](#envenclosing-environment)
- [`env:extend-environment     `](#envextend-environment)
- [`env:first-frame            `](#envfirst-frame)
- [`env:frame-values           `](#envframe-values) 
- [`env:frame-variables        `](#envframe-variables)
- [`env:lookup                 `](#envlookup)
- [`env:lookup-variable-value  `](#envlookup-variable-value)
- [`env:make-frame             `](#envmake-frame)
- [`env:set-variable-value!    `](#envset-variable-value)
- [`env:the-empty-environment  `](#envthe-empty-environment)
- [`filter                     `](#filter)
- [`flatten                    `](#flatten)
- [`formals->list              `](#formals-list)
- [`gensym                     `](#gensym)
- [`identifier->symbol         `](#identifier-symbol)
- [`identifier=?               `](#identifier)
- [`identifier?                `](#identifier-1)
- [`if->condition              `](#if-condition)
- [`if->else                   `](#if-else)
- [`if->then                   `](#if-then)
- [`if-else?                   `](#if-else) 
- [`if?                        `](#if)
- [`lambda->exp                `](#lambda-exp)
- [`lambda->formals            `](#lambda-formals)
- [`lambda-formals->list       `](#lambda-formals-list)
- [`lambda-formals-type        `](#lambda-formals-type)
- [`lambda-varargs-var         `](#lambda-varargs-var)
- [`lambda-varargs?            `](#lambda-varargs)
- [`lambda?                    `](#lambda)
- [`length/obj                 `](#lengthobj)
- [`list-index2                `](#list-index2)
- [`list-insert-at!            `](#list-insert-at)
- [`list-prefix?               `](#list-prefix)
- [`mangle                     `](#mangle)
- [`mangle-global              `](#mangle-global)
- [`pack-lambda-arguments      `](#pack-lambda-arguments)
- [`pair->list                 `](#pair-list)
- [`quote?                     `](#quote) 
- [`ref?                       `](#ref)
- [`set!->exp                  `](#set-exp)
- [`set!->var                  `](#set-var)
- [`set!?                      `](#set)
- [`string-replace-all         `](#string-replace-all)
- [`tagged-list?               `](#tagged-list?)
- [`take                       `](#take)

#Cyc-er-compare?
#Cyc-er-rename
#app?
#begin?
#const? 
#define->exp 
#define->var 
#define-c?
#define? 
#delete
#delete-duplicates
#env:\_lookup-variable-value 
#env:add-binding-to-frame! 
#env:all-values
#env:all-variables
#env:define-variable! 
#env:enclosing-environment
#env:extend-environment 
#env:first-frame
#env:frame-values 
#env:frame-variables
#env:lookup
#env:lookup-variable-value 
#env:make-frame
#env:set-variable-value! 
#env:the-empty-environment
#filter
#flatten
#formals->list
#gensym
#identifier->symbol
#identifier=?
#identifier?
#if->condition 
#if->else 
#if->then 
#if-else? 
#if?
#lambda->exp 
#lambda->formals
#lambda-formals->list
#lambda-formals-type
#lambda-varargs-var
#lambda-varargs?
#lambda?
#length/obj
#list-index2
#list-insert-at!
#list-prefix?
#mangle
#mangle-global
#pack-lambda-arguments
#pair->list 
#quote? 
#ref? 
#set!->exp 
#set!->var 
#set!? 
#string-replace-all
#tagged-list?
#take