# SRFI 1 - List library

The `(srfi 1)` provides a coherent and comprehensive set of list-processing procedures.

See the [SRFI document](http://srfi.schemers.org/srfi-1/srfi-1.html) for more information.

- [`xcons`](#xcons)
- [`tree-copy`](#tree-copy)
- [`make-list`](#make-list)
- [`list-tabulate`](#list-tabulate)
- [`cons*`](#cons)
- [`list-copy`](#list-copy)
- [`proper-list?`](#proper-list)
- [`circular-list?`](#circular-list)
- [`dotted-list?`](#dotted-list)
- [`not-pair?`](#not-pair)
- [`null-list?`](#null-list)
- [`list=`](#list=)
- [`circular-list`](#circular-list-1)
- [`length+`](#length)
- [`iota`](#iota)
- [`first`](#first)
- [`second`](#second)
- [`third`](#third)
- [`fourth`](#fourth)
- [`fifth`](#fifth)
- [`sixth`](#sixth)
- [`seventh`](#seventh)
- [`eighth`](#eighth)
- [`ninth`](#ninth)
- [`tenth`](#tenth)
- [`car+cdr`](#carcdr)
- [`take`](#take)
- [`drop`](#drop)
- [`take-right`](#take-right)
- [`drop-right`](#drop-right)
- [`take!`](#take-1)
- [`drop-right!`](#drop-right-1)
- [`split-at`](#split-at)
- [`split-at!`](#split-at-1)
- [`last`](#last)
- [`last-pair`](#last-pair)
- [`zip`](#zip)
- [`unzip1`](#unzip1)
- [`unzip2`](#unzip2)
- [`unzip3`](#unzip3)
- [`unzip4`](#unzip4)
- [`unzip5`](#unzip5)
- [`count`](#count)
- [`append!`](#append)
- [`append-reverse`](#append-reverse)
- [`append-reverse!`](#append-reverse-1)
- [`concatenate`](#concatenate)
- [`concatenate!`](#concatenate-1)
- [`unfold`](#unfold)
- [`fold`](#fold)
- [`pair-fold`](#pair-fold)
- [`reduce`](#reduce)
- [`unfold-right`](#unfold-right)
- [`fold-right`](#fold-right)
- [`pair-fold-right`](#pair-fold-right)
- [`reduce-right`](#reduce-right)
- [`append-map`](#append-map)
- [`append-map!`](#append-map-1)
- [`map!`](#map)
- [`pair-for-each`](#pair-for-each)
- [`filter-map`](#filter-map)
- [`map-in-order`](#map-in-order)
- [`filter`](#filter)
- [`partition`](#partition)
- [`remove`](#remove)
- [`filter!`](#filter-1)
- [`partition!`](#partition-1)
- [`remove!`](#remove-1)
- [`find`](#find)
- [`find-tail`](#find-tail)
- [`any`](#any)
- [`every`](#every)
- [`list-index`](#list-index)
- [`take-while`](#take-while)
- [`drop-while`](#drop-while)
- [`take-while!`](#take-while-1)
- [`span`](#span)
- [`break`](#break)
- [`span!`](#span-1)
- [`break!`](#break-1)
- [`delete`](#delete)
- [`delete!`](#delete-1)
- [`alist-cons`](#alist-cons)
- [`alist-copy`](#alist-copy)
- [`delete-duplicates`](#delete-duplicates)
- [`delete-duplicates!`](#delete-duplicates-1)
- [`alist-delete`](#alist-delete)
- [`alist-delete!`](#alist-delete-1)
- [`reverse!`](#reverse)
- [`lset<=`](#lset)
- [`lset=`](#lset-1)
- [`lset-adjoin`](#lset-adjoin)
- [`lset-union`](#lset-union)
- [`lset-intersection`](#lset-intersection)
- [`lset-difference`](#lset-difference)
- [`lset-xor`](#lset-xor)
- [`lset-diff+intersection`](#lset-diffintersection)
- [`lset-union!`](#lset-union)
- [`lset-intersection!`](#lset-intersection-1)
- [`lset-difference!`](#lset-difference-1)
- [`lset-xor!`](#lset-xor-1)

# xcons

# tree-copy

# make-list

# list-tabulate

# cons*

# list-copy 

# proper-list?

# circular-list?

# dotted-list?

# not-pair?

# null-list?

# list=

# circular-list

# length+

# iota

# first

# second

# third

# fourth

# fifth

# sixth

# seventh

# eighth

# ninth

# tenth

# car+cdr

# take

# drop

# take-right

# drop-right

# take!

# drop-right!

# split-at

# split-at!

# last

# last-pair

# zip

# unzip1

# unzip2

# unzip3

# unzip4

# unzip5

# count

# append!

# append-reverse

# append-reverse!

# concatenate

# concatenate!

# unfold

# fold

# pair-fold

# reduce

# unfold-right

# fold-right

# pair-fold-right

# reduce-right

# append-map

# append-map!

# map!

# pair-for-each

# filter-map

# map-in-order

# filter

# partition

# remove

# filter!

# partition!

# remove! 

# find

# find-tail

# any

# every

# list-index

# take-while

# drop-while

# take-while!

# span

# break

# span!

# break!

# delete

# delete!

# alist-cons

# alist-copy

# delete-duplicates

# delete-duplicates!

# alist-delete

# alist-delete!

# reverse! 

# lset<=

# lset=

# lset-adjoin  

# lset-union

# lset-intersection

# lset-difference

# lset-xor

# lset-diff+intersection

# lset-union!

# lset-intersection!

# lset-difference!

# lset-xor!