Topic Index

⍺th root···················· root
abacus······················ mayan
accumulator················· factorial fibonacci list
Ackermann's function········ balm bfack hexdump mdf ticks
addition···················· colsum
adjacency matrix············ Graphs
adjacent 1s················· xtabs
AGM························· see arithmetic-geometric mean
aide-mémoire················ refcard
align text·················· just justify
ambivalent·················· ambiv
ancestor space·············· up
APL characters·············· aplfont
APL385 Unicode·············· xhtml
Arithmetic Boundary Checking abc
arithmetic-geometric mean··· limit
assembler··················· baby
assignment·················· assign
assignment, destructive····· alists hexdump merge sam select wpath
assignment, indexed········· maze merge select wpath
association list············ alists mns
AST························· see abstract syntax tree
Asteroids··················· life
astronomy··················· mayan
attributes·················· attrib
autoformat·················· test
Baby························ baby
bags························ bags
balanced ternary············ bt esh ratrep ratsum stamps JitSub
balanced tree··············· see binary search tree
Base64 encoding············· base64
Beano······················· pigeons
Beast, number of the········ rational
BFS························· see breadth-first search
bijective numeration········ adic
binary······················ ary
binary search··············· bsearch
binary search tree·········· avl redblack sbst splay BST
binomial···················· nats
biscuit, ginger············· beyond
blanks······················ dab deb dlb dmb dtb dxb mtrim vtrim Blank_removal
boolean functions··········· logic truth_tables
border······················ box
bottom ⊥···················· baby declarative
boundary···················· abc kcell ksphere
box························· box disp display draw
box-drawing characters······ box dft disp display draw keyboards maze select
···························· wrapnote
Brainfuck··················· bf bfack mac
breadth-first search········ bfs path search span trav
BST························· see binary search tree
Bunda-Gerth parser·········· parse
cache······················· memo
calendar···················· cal date mayan British_Calendar_Act_1751 Dates
···························· Gregorian_calendar
calibration················· wsreq
canon paschalis············· easter
capitalisation·············· von
card deck··················· ripple
cartesian coordinates······· polar
case, lower················· lcase
case, upper················· ucase
cash prize·················· osc
cast························ int
cellular automaton·········· life
characters·················· aplfont
checksum···················· chksum
chess puzzle················ kt queens
civilization, end of········ mayan
classification, name········ nc ncpath
closure····················· cf cfract memo ratsum ucase utf8
coding, fibonacci··········· fibonacci
Colemak····················· dvorak
colour, changing············ colour_change
column sum·················· colsum
combination················· cmat
combinator·················· dft
comment removal············· rmcm
compare functions··········· fndiff
compare namespaces·········· refmatch
compare workspaces·········· wsdiff
complex numbers············· cx cxdraw cxsh polar roots
component file·············· filefind
compression················· dab deb dlb dmb dtb dxb nspack pack pack4 packB
···························· packD packH packN packQ packR packS packT packU
···························· packX packZ squeeze vtrim Data_compression
computer programmers········ nats staples
computer, first············· baby
conditional operator········ case cond else for lof logic of until while
cons························ list
consciousness··············· muson
continuation-passing style·· mac
continued fraction·········· cfract fibonacci
convolution················· xtimes
coordinates················· polar
cost vector················· wcost
cows and bulls, game of····· mmind
co-operator················· case co_ops cond for fork lof of vof
CPS························· see continuation-passing style
cross-reference············· fnrefs
currying···················· parse trav
cylinder···················· life
data compression············ see compression
data conversion············· type
date························ days easter mayan timestamp Dates
···························· Gregorian_calendar
debugging··················· trace traj
Decimal Floating Point······ hexf
decimal normalisation······· JitSub
decimal (from hex)·········· hex
declarative programming····· bfack bt declarative pearly
default display············· nlines
default left argument······· root
define function············· defn
depth-first search·········· dfspan trav
derived function············ derive dft
determinant················· det
DFS························· see depth-first search
dictionary·················· alists
difference, functions······· fndiff
disassembler················ baby
display (of arrays)········· disp display
diversions·················· baby dice draw kt life mayan maze mmind mp3 queens
···························· quzzle ripple roman sudoku von
division by ¯1 1+base*⍵····· JitSub
division, fast·············· JitSub
division, long·············· bt nats
do-y function··············· do
drawing····················· cxdraw
Dvorak······················ dvorak
D-function, test for········ isdfn
each························ each
Easter······················ easter
Egyptian fraction··········· efract
Eide numbers················ esh ratrep ratsum
encapsulate function········ rep
encoding···················· utf8 utf8get utf8put
encryption·················· packD
endian······················ cxsh hexdump hexf
engineers··················· osc
enlist······················ avl enlist enss enss limit nspack redblack sbst
···························· splay BST Graphs
Erasomatic (tm)············· beyond
exa-························ nats
experience, near-death······ beyond
exponential, sequence for··· cx
expression·················· parse
expression comparison······· cf cmpx
expression transformation··· avl cmat derive nats
external workspace·········· refws
factorial··················· nats
Fast Fourier Transform······ xtimes
FFT························· see Fast Fourier Transform
FFT························· xpower
fibonacci coding············ fibonacci
fibonacci number············ avl cfract cmat dft fibonacci memo nats pow trav
find························ filefind
FinnAPL Idiom List·········· bags
fixpoint···················· cxdraw derive limit JitSub
flip flop (RS)·············· xtabs
fold························ foldl
font························ aplfont xhtml
fork························ derive dft fork vof
formatting, functions······· dots refmt rmcm
formatting, trees··········· tfmt tnest
FRE························· see Function Results Edition
fudge factor················ wsreq
function array·············· fnarray fnarray for of rep vof Function_arrays
function inverse············ inverse invr invs
function power·············· limit pow
Function Results Edition···· cf cfract memo ratsum ucase utf8
function selection·········· for
function trains············· dft
functions, list of·········· lof
function, fix··············· fix
Gates, Pearly··············· pearly
Gaussian integer············ cx
Gaussian method············· det
Gauss-Jordan················ gauss_jordan
GCD························· see greatest common divisor
giga-······················· nats
glider······················ life
golden mean················· cfract fibonacci limit phinary
grade······················· ripple
graph······················· alists assign bfs dfspan inslink insnode kt stamps
···························· stdists stpath stpaths Graphs
graph, planar··············· konigsberg
graph, unweighted··········· path popnode remlink remnode search span Graphs
graph, weighted············· wcost wmst wpath wspan wGraphs Graphs
greatest common divisor····· cfract gcd nats rats
Gregorian calendar·········· date gcr Gregorian_calendar
guard······················· dice
Gödel, Escher, Bach········· osc
Haiku······················· staples
Hailstone sequence·········· osc
Happy Hacking Keyboard······ dvorak
hash tables, retained······· ucase
hashing····················· chksum
HCF························· see greatest common divisor
Heaven······················ beyond pearly
Helsingør··················· cond
hexadecimal················· cxsh esh hex hexdump hexf
HHKB························ see Happy Hacking Keyboard
Hilbert matrix·············· det gauss_jordan
histogram··················· cmpx easter nicediv
hook························ derive dft fork
horizontal tabs············· xtabs
Hungarian method············ assign
hyperator··················· bf cf cond hyperators
hypercube··················· kcell Graphs
hypersphere················· kball ksphere
IDN························· see International Day Number
IEEE FP precision··········· ary cxsh gauss_jordan nats
IEEE 754···················· hexf
IEEE 854···················· hexf
imaginary numbers··········· see complex numbers
independent zeros··········· assign
indexing, array············· from
infinite precision·········· big colsum nats
insensitive, case··········· lcase
integer····················· int
intellect, human············ staples
International Day Number···· days
interval···················· abc
inverse····················· inverse invr invs
iota, generialised·········· iotag
is-y function··············· do
J··························· key pco
JFK Airport················· pearly
JITS························ see Just-In-Time-Subtraction
Julian calendar············· Gregorian_calendar
justify text················ just justify Line_vectors
Just-In-Time-Subtraction···· ratrep JitSub
K··························· sudoku
Kaliningrad················· konigsberg
key adverb·················· key
keyboard layout············· dvorak keyboards
kilo-······················· nats
klein bottle················ life
knight's tour··············· kt Graphs
Kumquat····················· disp htx
k-adic numbers·············· adic
K-ball······················ kball
K-cell······················ kcell
K-sphere···················· ksphere
Königsberg·················· konigsberg
lambda expression··········· list
lazy evaluation············· and
LCM························· see least common multiple
least common multiple······· gcd nats rats
Lempel-Ziv-Welch············ packZ
lexical scan················ tokens
lexicographical comparison·· lex
life, game of··············· life
line list··················· see line vector
line vector················· justify ltov squeeze unwrap wrap wrapnote
···························· Line_vectors
lines of output············· nlines
line-drawing characters····· see box-drawing characters
lists······················· alists bf list
local names················· mean
look-up table··············· alists
loop························ loop
lower case·················· lcase
Lucas numbers··············· fibonacci
LZW························· see Lempel-Ziv-Welch
macro······················· balm hexdump mac
Manchester computer········· baby
manifolds··················· ksphere life
Mastermind·················· mmind
mathematicians·············· nats packZ staples
maximise···················· assign
maximum, local·············· ksphere
maze························ hampton maze
media player (MP3)·········· mp3
mega-······················· nats
memoization················· memo
merge······················· merge select
merge, workspace············ wsmerge
MIME························ base64
min (workspace)············· list
mininum spanning tree······· wmst
monitor····················· mdf ticks time trace wsreq
Morse code·················· morse
MP3 (media player)·········· mp3
MST························· see minimum spanning tree
multiset···················· bags
multi-graph················· konigsberg
muscle memory··············· dvorak
muse························ muson
music······················· mp3
möbius strip················ life
name classification········· nc ncpath
namespace··················· mns Namespaces
namespace comparison········ refmatch
namespace references········ refs up xrefs
name-clash problem·········· attrib cxsh dots find isdfn mdf ticks tree wsdiff
native file················· file getfile hexdump int putfile
natural number·············· nats
network····················· see graph
Newton-Raphson·············· invr ksphere limit traj
Nicaea, Council of·········· easter
non-termination············· baby declarative
no-result··················· do
number system··············· mayan roman
offside rule················ hexdump
one-liner··················· rmcm
optimise···················· assign
orphans····················· dfnscode
Oscillate··················· osc
oyster······················ muson
packing····················· nspack pack4 packB packD packH packN packQ packR
···························· packS packT packU packX packZ
palindrome·················· limit
parent space················ up
parsing····················· list parse tokens unify
partioned reduction········· pred
Pascal's triangle··········· cmat
passant, en················· do
path························ stdists stpath stpaths wpath
pattern-matching············ bfack bt
performance················· cf cmpx mdf ticks time wsreq
permutation matrix·········· pmat
persistent local variable··· memo
pervasive function·········· easter int perv truth_tables
peta-······················· nats
Phi························· see golden mean
phinary number·············· phinary
Pi·························· cfract cxsh rational
pigeons····················· pigeons
playlist···················· mp3
Poincaré Conjecture········· ksphere
polar coordinates··········· polar
polygon····················· cx cxsh
polynomial·················· ratrep xtimes
postage stamps·············· stamps
power operator·············· pow
prime number················ factors hexdump pco rats sieve
printing···················· dfnscode dfnsnotes
programmable function keys·· PF_keys
proof, engineer's··········· osc
pseudo-graph················ konigsberg
pure function··············· baby each gauss_jordan queens sam select
puzzle······················ quzzle
quadratic, real roots of···· roots
quad-tree··················· pack4
quality assurance··········· test
queue······················· bfs
quickstep··················· dvorak
QWERTY······················ dvorak keyboards
railway diagram············· file
rank operator··············· rank
rational number············· ary cfract esh rational ratrep rats ratsum
rectangle, golden··········· phinary
recursion··················· see recursion
redo························ UndoRedo
reduction··················· acc foldl
red-black trees············· redblack
reference card·············· refcard
references, function········ fnrefs
references, workspace······· refws
refs························ refs
remote execution············ refws xws
RLE························· see run-length encoding
roman numerals·············· roman
run-length encoding········· packR
r-pentamino················· life
scalar-wise················· perv
scan operators·············· scan
sea monster, scary·········· dft
seawater···················· ksphere muson
select and modify··········· sam
select operator············· case
selective specification····· enss
sequence···················· cfract to
sequential test············· and
session input··············· defn
Setun computer·············· bt
Shannon-Fano················ packS
sharing, array·············· pack
shell······················· cxsh cxsh esh loop
shipping regions, UK········ uksfr
shortlex···················· adic
shuffle····················· ripple
Signum difference··········· abc
simple-array-wise··········· saw
skewed four················· ratrep ratsum
soup························ soup
source code················· dfnscode
spaces······················ see blanks
spanning tree··············· dfspan span stdists stpath stpaths wmst wspan
sphere······················ kball ksphere
split······················· segs
squab······················· pigeons
squad indexing·············· squad
SSEM························ baby
standard deviation·········· mean
staples····················· staples
stela······················· mayan
stepping···················· to
string replacement·········· fnrepl ss ssmat ssword subs
subset······················ subvec
substitution················ ss ssmat ssword subs
subtraction, just-in-time··· ratrep JitSub
subvector··················· subvec
sudoku, game of············· sudoku
suffix trie················· packZ
sum························· colsum
symbol table················ alists
syntax······················ attrib
tab expansion··············· xtabs
tag, XML···················· htx
tail recursion·············· bfack factorial fibonacci gcd
tera-······················· nats
ternary····················· ary
ternary, balanced··········· bt
text························ segs unwrap words wrap wrapnote Blank_removal
···························· Data_compression Line_vectors
text file··················· getfile putfile
time························ timestamp
timing······················ cf cmpx mdf ticks time
topology···················· abc ksphere
torus······················· ksphere life
tradfn······················ ambiv
trailing blanks············· mtrim
trains······················ dft
trajectory·················· traj
transformation, expression·· derive
translation················· unicode
tree························ avl dft redblack sbst splay tfmt tnest trav tview
···························· Trees
tree searching·············· kt queens
truth tables················ logic truth_tables
turing complete············· baby bf
type························ type
type conversion············· int
type notation··············· avl foldl sbst splay trav BST
undo························ UndoRedo
Unicode····················· getfile iotag putfile unicode utf8 utf8get utf8put
···························· xhtml
unification················· unify
unit circle················· cxdraw
unit sphere················· ksphere
unit testing················ test
Univac······················ baby limit
unsigned···················· int
UTF-8······················· utf8 utf8get utf8put xhtml
variable-wise··············· vwise
vector of functions········· vof
vector-wise················· rows
vegan······················· soup
vigesimal number system····· mayan
white dots·················· dots hexdump
widows······················ dfnscode
wondrous number············· osc
word ladder················· Graphs
words······················· segs wrap wrapnote
workspace··················· refws tree wsdiff wsmerge xws Workspaces
wrapping, words············· unwrap Line_vectors
www.dyalog.com·············· xhtml
XML························· htx
xutils, ss·················· ss ssmat ssword
yotta-······················ nats
youtube····················· life
zetta-······················ nats
128-bit Floating Point······ hexf
1752························ date days gcr British_Calendar_Act_1751
2-adic numbers·············· bf
3N+1 sequence··············· osc
⍳, generalised·············· iotag
Ø··························· see golden mean
⎕AT························· attrib
⎕DR························· type
⎕ML························· cmat cmpx enss limit logic mns
⎕NC, extended··············· nc ncpath
⎕SE························· defn
⎕SIZE······················· attrib
⎕WX························· refs
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