Elan Index and Symbols

Elan Index

This index contains:

Colour coding of terms
Index of terms
IDE buttons
Punctuation symbols

Colour coding of terms

keyword : Type : method : constant : property : comment : Topic : Section in documentation

Index of terms

🅰 🅱 🅲 🅳 🅴 🅵 🅶 🅷 🅸 🅹 🅺 🅻 🅼 🅽 🅾 🅿 🆀 🆁 🆂 🆃 🆄 🆅 🆆 🆇 🆈 🆉

Term	Category	Topic links
A return to top
abs	function	Maths functions
abstract class	keyword	interface
abstract function	topic
abstract procedure	topic
abstract propertyy	topic
acos	function	Maths functions
add	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
addFromList	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
alt	property	Properties of Vector graphic shapes
and	keyword	Logical operators
Append code	IDE	Load, run, and save programs
append	dot procedure	Procedure methods on a `List list List List List`
appendList	dot procedure	Procedure methods on a `List list List List List`
Argument	topic	procedure and function
Arithmetic operators	topic
as	keyword	Parameters
asBinary	dot method	Dot methods on an `Int int int Integer int`
ASCII	topic	Character sets
asHtml	dot method	Displaying images from URLs
asin	function	Maths functions
asList	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
`AsRef AsRef AsRef AsRef AsRef`	Type	Call by reference
asRegExp	dot method	Dot methods on a `String str string String String`
assert	keyword	test
asSet	dot method	Common dot methods
asSVG	dot method	Displaying images from URLs
asUnicode	dot method	Dot methods on a `String str string String String`
atan	function	Maths functions
B return to top
bitAnd	function	Bitwise functions
bitNot	function	Bitwise functions
bitOr	function	Bitwise functions
bitShiftL	function	Bitwise functions
bitShiftR	function	Bitwise functions
bitXor	function	Bitwise functions
black	constant	Colour constants
Block graphics	topic
blue	constant	Colour constants
`Boolean bool bool Boolean bool`	Type	Named value data Type
Breakpoint	IDE	Debugging programs
brown	constant	Colour constants
C return to top
call	keyword	Global instructions
Call by reference	topic
catch	keyword	try (test)
ceiling	dot method	Dot methods on a `Float float double Double double`
centreX, centreY	properties	Properties of Vector graphic shapes
Character sets	topic
`CircleVG CircleVG CircleVG CircleVG CircleVG`	Type	Vector graphics
class	keyword
clearAllDisplays	procedure
clearAndReset	dot procedure	Turtle graphics
clearBlocks	procedure	Block graphics
clearHtml	procedure	Rendering Html in the display
clearKeyBuffer	procedure	Standalone procedures
clearPrintedText	procedure	Standalone procedures
clearVectorGraphics	procedure	Vector graphics
clock	function	Miscellaneous methods
close	procedure	Reading text files
closeBrace	constant	String constants
Colours	topic
Combining graphic outputs	topic
comment #	keyword
Compilation	topic	Load, run, and save programs
Compile errors	topic	Compile Errors and Warnings
constant	keyword
Constants (system)	topic
constructor	keyword
contains	dot method	Common dot methods
context menu	IDE	Debugging programs
copy	function	System functions
cos	function	Maths functions
createBlockGraphics	function	Block graphics
createFileForWriting	function	Writing text files
createList	function	System functions
createListOfLists	function	System functions
CSS	topic	Rendering Html in the display
CustomError	Type	try (test)
D return to top
Deconstruction	topic	`List list List List List` , Tuple
degrees	function	Maths functions
dequeue	dot method	Dot methods on a `Queue Queue Queue Queue Queue`
`Dictionary Dictionary Dictionary Dictionary Dictionary`	Type	Standard data structures
difference	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
Display	IDE	Navigate around the IDE
displayBlocks	procedure	Block graphics
displayHtml	procedure	Rendering Html in the display
displayVectorGraphics	procedure	Vector Graphics
divAsFloat	function	Maths functions
divAsInt	function	Maths functions
Dot method	topic
Dot syntax	topic
E return to top
Editor	IDE	Navigate around the IDE
`ElanRuntimeError ElanRuntimeError ElanRuntimeError ElanRuntimeError ElanRuntimeError`	Type	try (test)
elif	keyword	if (instruction), if expression
else	keyword	if (instruction), if expression
end	keyword	automatically supplied at end of program constructs
endOfFile	procedure	Reading text files
enqueue	dot method	Dot methods on a `Queue Queue Queue Queue Queue`
enum	keyword
enumValue	method
Equality testing	topic
equals	dot method	Common dot methods
Exception	topic	try
exp	function	Maths functions
Expression	topic
Extension function	topic
Extension procedure	topic
F return to top
false	constant	Boolean constants
Field	IDE	Create new instructions
File input/output	topic
fillColour	property	Properties of Vector graphic shapes
filter	dot method	Higher-order functions on a `List list List List List`
`Float float double Double double`	Type	Named value data Type
float	function	Standalone functions
floor	dot method	Dot methods on a `Float float double Double double`
for loop	keyword
Func	Type
function	keyword
Function method	topic
Function reference	topic	Passing a function as a reference
Functional programming	topic
G return to top
getKey	function	Keyboard input
getKeyWithModifier	function	Keyboard input
getNumericKey	function	Keyboard input
Ghosting	topic	Edit instructions
global	keyword	Scope and name qualification
Global instructions	topic
Global prompt	IDE	Browse code
Graphics	topic	Block Graphics , Turtle graphics , Vector graphics
green	constant	Colour constants
grey	constant	Colour constants
H return to top
`HashSet HashSet HashSet HashSet HashSet`	Type	Standard data structures
hasKey	dot method	Dot methods on a `Dictionary Dictionary Dictionary Dictionary Dictionary`
head	dot method	Dot methods on a `List list List List List`
heading	property	Properties of a Turtle
height	property	Properties of Vector graphic shapes
Hexadecimal	topic	`Int int int Integer int` , Colours , unicode
hide	dot procedure	Turtle graphics
HoF	topic	Higher-order Functions (HoFs)
HTML	topic	Rendering Html in the display
I return to top
IDE	IDE	Integrated Development Environment
IDE Buttons	IDE	Integrated Development Environment
Identifier	topic	Identifiers and Type names
if (instruction)	keyword
if (expression)	keyword
`ImageVG ImageVG ImageVG ImageVG ImageVG`	Type	Vector graphics
Immutability	topic	Mutability of named values
Import code	IDE	Load, run, and save programs
in	keyword	for loop
Indexed values	topic
indexOf	dot method	Common dot methods
inherits	keyword
initialise	dot procedure	Procedure methods on a `List list List List List`
initialiseFromClock	procedure	`Random Random Random Random Random`
Input, keyboard	topic	Keyboard input Navigate around the IDE
Input, file	topic	Text file input/output
input	function	Keyboard input
inputFloat	function	Keyboard input
inputFloatBetween	function	Keyboard input
inputInt	function	Keyboard input
inputIntBetween	function	Keyboard input
inputStringFromOptions	function	Keyboard input
inputStringWithLimits	function	Keyboard input
insert	dot procedure	Procedure methods on a `List list List List List`
Instance	topic
Instruction	IDE	Create new instructions
`Int int int Integer int`	Type	Named value data Type
int	function	Standalone functions
interface	keyword
Interpolated string	topic
intersection	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
is	keyword
isAfter	dot method	Dot methods on a `String str string String String`
isAfterOrSameAs	dot method	Dot methods on a `String str string String String`
isBefore	dot method	Dot methods on a `String str string String String`
isBeforeOrSameAs	dot method	Dot methods on a `String str string String String`
isDisjointFrom	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
isInfinite	dot method	Maths functions
isNaN	dot method	Maths functions
isnt	keyword
isSubsetOf	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
isSupersetOf	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
item_N	property	iitem_0, item_1,... in Tuple
J return to top
join	dot method	Dot methods on a `List list List List List`
K return to top
Keyboard (editor)	IDE	Navigate around the IDE
Keyboard (input)	topic	Standalone procedures
keys	dot method	Dot methods on a `Dictionary Dictionary Dictionary Dictionary Dictionary`
L return to top
lambda	keyword
length	dot method	Common dot methods
let	keyword	in Funtional programming function only
library	keyword	Scope and name qualification
`LineVG LineVG LineVG LineVG LineVG`	Type	Vector graphics
`List list List List List`	Type	Standard data structures
Literal value	topic
log10	function	Maths functions
log2	function	Maths functions
logE	function	Maths functions
Logical operators	topic
lowerCase	dot method	Dot methods on a `String str string String String`
M return to top
main	keyword
map	dot method	Higher-order functions on a `List list List List List`
matchesRegExp	dot method	Dot methods on a `String str string String String`
max	function	System functions
maxBy	dot method	Higher-order functions on a `List list List List List`
Member instructions	topic
Member prompt	IDE	Browse code
Method	topic
min	function	System functions
minBy	dot method	Higher-order functions on a `List list List List List`
mod	keyword	Arithmetic operators
Mouse	topic	Navigate around the IDE
move	dot procedure	Turtle graphics
moveTo	dot procedure	Turtle graphics
Mutability	topic	Mutability of named values
N return to top
Named value	topic
new	keyword
new code prompt	IDE	Browse code
next	dot method	Random
nextInt	dot method	Random
not	keyword	Logical operators
notEqualTo	dot method	Common dot methods
Numeric comparison	topic	Equality testing
O return to top
Object-oriented programming	topic
of	keyword	<of Type> in Standard data structures
openBrace	constant	String constants
openFileForReading	function	Reading text files
Operator	topic
or	keyword	Logical operators
orderBy	dot method	Higher-order functions on a `List list List List List`
Output, file	topic	Writing text files
P return to top
Parameter	topic
peek	dot method	Common dot methods
penColour	dot procedure	Turtle graphics and Colours
penDown	dot procedure	Turtle graphics
penUp	dot procedure	Turtle graphics
penWidth	dot procedure	Turtle graphics
pi	constant	Maths constant
placeAt	dot procedure	Turtle graphics
pop	dot method	Dot methods on a `Stack Stack Stack Stack Stack`
pow	function
power	topic	Arithmetic operators
prepend	dot procedure	Procedure methods on a `List list List List List`
prependList	dot procedure	Procedure methods on a `List list List List List`
pressAnyKeyToContinue	procedure	Standalone procedures
print	procedure	Standalone procedures
printNoLine	procedure	Standalone procedures
printTab	procedure	Standalone procedures
private	keyword	applied to Class procedures, functions and properties
Procedural programming	topic
procedure	keyword
Prompt	IDE	Browse code
property	keyword
Punctuation symbols	topic
push	dot method	Dot methods on a `Stack Stack Stack Stack Stack`
Q return to top
`Queue Queue Queue Queue Queue` FIFO	Type	Standard data structures
quotes	constant	String constants
R return to top
radians	function	Maths functions
radius	property	Properties of Vector graphic shapes
`Random Random Random Random Random`	Type
random	function	Miscellaneous methods
randint	function	Miscellaneous methods
range	function	System functions , Indexed values
rangeInSteps	function	System functions , Indexed values
rawSVGcontent	property	Vector graphics
RawVG	Type	Vector graphics
readLine	procedure	Reading text files
readWholeFile	procedure	Reading text files
`RectangleVG RectangleVG RectangleVG RectangleVG RectangleVG`	Type	Vector graphics
Recursion	topic
red	constant	Colour constants
reduce	dot method	Higher-order functions on a `List list List List List`
Reference data Type	topic
Regular expression (RegExp)	topic
remove	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
removeAll	dot procedure	Procedure methods on a `List list List List List`
removeAt	dot procedure	Procedure methods on a `List list List List List`
removeFirst	dot procedure	Procedure methods on a `List list List List List`
replace	dot method	Dot methods on a `String str string String String`
return	keyword	function
returns	keyword	function
round	dot method	Dot methods on a `Float float double Double double`
Run controls	IDE	Load, run, and save programs
S return to top
saveAndClose	procedure	Writing text files
Scope	topic
set	keyword
set	dot method	Call by reference
setAlt	dot procedure	Properties of Vector graphic shapes
setCentreX	dot procedure	Properties of Vector graphic shapes
setCentreY	dot procedure	Properties of Vector graphic shapes
setFillColour	dot procedure	Properties of Vector graphic shapes
setHeight	dot procedure	Properties of Vector graphic shapes
setRadius	dot procedure	Properties of Vector graphic shapes
setStrokeColour	dot procedure	Properties of Vector graphic shapes
setStrokeWidth	dot procedure	Properties of Vector graphic shapes
setTitle	dot procedure	Properties of Vector graphic shapes
setWidth	dot procedure	Properties of Vector graphic shapes
setX, setY	dot procedures	Properties of Vector graphic shapes
setX1, setY1, setX2, setY2	dot procedures	Properties of Vector graphic shapes
show	dot procedure	Procedure methods on a turtle
sin	function	Maths functions
sleep	procedure
sleep_ms	procedure
split	dot method	Dot methods on a `String str string String String`
sqrt	function	Maths functions
`Stack Stack Stack Stack Stack` LIFO	Type	Standard data structures
Standalone function	topic
Standalone procedure	topic
Standard data structures	topic
Statement instruction	topic
`String str string String String`	Type	Named value Types
strokeColour	property	Properties of Vector graphic shapes
strokeWidth	property	Properties of Vector graphic shapes
subList	dot method	Dot methods on a `List list List List List`
subString	dot method	Dot methods on a `String str string String String`
Symbols, punctuation	topic
System method	topic
T return to top
tail	dot method	`List list List List List`
tan	function	Maths functions
test	keyword
Text file input/output	topic
`TextFileReader TextFileReader TextFileReader TextFileReader TextFileReader`	Type	Reading text files
`TextFileWriter TextFileWriter TextFileWriter TextFileWriter TextFileWriter`	Type	Writing text files
then	keyword	if instruction, if expression
this	keyword	Class
throw	keyword
title	property	Properties of Vector graphic shapes
to	keyword	for loop
tone	procedure	Sound output
toString	dot method	Common dot methods
transparent	constant	Colour constants
trim	dot method	Dot methods on a `String str string String String`
true	constant	Boolean constants
try	keyword
Tuple	topic
turn	dot procedure	Turtle graphics
turnToHeading	dot procedure	Turtle graphics
`Turtle Turtle Turtle Turtle Turtle`	Type
Type	topic
Type name	topic
U return to top
unicode	function	Character sets
union	dot method	Dot methods on a `HashSet HashSet HashSet HashSet HashSet`
upperCase	dot method	Dot methods on a `String str string String String`
V return to top
value	dot method	Call by reference
Value data Type	topic
values	dot method	Dot methods on a `Dictionary Dictionary Dictionary Dictionary Dictionary`
variable	keyword
Vector graphics	topic
`VectorGraphic VectorGraphic VectorGraphic VectorGraphic VectorGraphic`	Type	Vector graphics
W return to top
waitForKey	function	Keyboard input
while loop	keyword
white	constant	Colour constants
width	property	Properties of Vector graphic shapes
withAlt	dot method	Properties of Vector graphic shapes
withAppend	dot method	Dot methods on a `List list List List List`
withAppendList	dot method	Dot methods on a `List list List List List`
withCentreX	dot method	Properties of Vector graphic shapes
withCentreY	dot method	Properties of Vector graphic shapes
withFillColour	dot method	Properties of Vector graphic shapes
withHeight	dot method	Properties of Vector graphic shapes
withInsert	dot method	Dot methods on a `List list List List List`
withPrepend	dot method	Dot methods on a `List list List List List`
withPrependList	dot method	Dot methods on a `List list List List List`
withRadius	dot method	Properties of Vector graphic shapes
withRemoveAll	dot method	Dot methods on a `List list List List List`
withRemoveAt	dot method	Common dot methods
withRemoveFirst	dot method	Dot methods on a `List list List List List`
withSet	dot method	Common dot methods
withStrokeColour	dot method	Properties of Vector graphic shapes
withStrokeWidth	dot method	Properties of Vector graphic shapes
withTitle	dot method	Properties of Vector graphic shapes
withWidth	dot method	Properties of Vector graphic shapes
withX, withY	dot methods	Properties of Vector graphic shapes
withX1, withY1, withX2, withY2	dot methods	Properties of Vector graphic shapes
writeLine	procedure	Writing text files
writeWholeFile	procedure	Writing text files
X return to top
x, y (`Turtle Turtle Turtle Turtle Turtle`)	properties	Turtle graphics properties
x, y (`VectorGraphic VectorGraphic VectorGraphic VectorGraphic VectorGraphic`)	properties	Properties of Vector graphic shapes
x1, y1, x2, y2 (`VectorGraphic VectorGraphic VectorGraphic VectorGraphic VectorGraphic`)	properties	Properties of Vector graphic shapes
Y return to top
yellow	constant	Colour constants
Z return to top

IDE buttons

Button	Function	Topic links
demo ▼	Opens menu of demo programs	Load, run, and save programs
file ▼	Opens menu of program file operations	Load, run, and save programs
trim	Removes code prompts	Browse code
outline	Toggles outlining of code	Browse code
undo	Undoes changes to last valid code	Edit instructions
redo	Applies the saved changes	Edit instructions
Reference Language ▼	Opens menu of supported languages	Edit instructions
Procedural ▼	Opens menu of programming paradigms	Launch IDE
run	Runs the program	Load, run, and save programs
stop	Stops the running program	Load, run, and save programs
debug	Enters debugging mode	Debugging programs
pause	Pauses program execution in debug mode	Debugging programs
step	Steps through program in debug mode	Debugging programs
clear	Clears the display of text and graphics	Navigate around the IDE
display	Gives the display the input focus	Navigate around the IDE
info	Displays runtime errors or show debugging information	Navigate around the IDE
help	Opens the Elan documentation	Navigate around the IDE
worksheet	Offers standard and external worksheets	Navigate around the IDE

Punctuation symbols

Punctuation symbols
( )	(round) brackets	used in arithmetic or logical expressions to define the order of evaluation, and to enclose a list of arguments or parameters
[ ]	square brackets	used to enclose a literal list in a mutable structure: `List list List List List` or `Dictionary Dictionary Dictionary Dictionary Dictionary` , or to define an index, or an index range
{ }	curly braces	used to define interpolated fields within a string See also the constants openBrace and closeBrace
$	dollar	used before the opening quotes of a string so that interpolated fields (enclosed in curly braces) can be included in the string
.	dot, full stop, period	used in defining a fractional (non-integer) number (a `Float float double Double double` ), or to access a method, property or Tuple element using dot syntax
,	comma	used to separate items in several forms of list
:	colon	used to define a key:value pair in a literal `Dictionary Dictionary Dictionary Dictionary Dictionary`
+	plus	the addition operator
-	minus	the subtraction operator, or the unary negation operator
*	multiply	the multiplication operator
/	divide	the division operator for two numeric values at least one of which must be a `Float float double Double double`, also used to delimit a literal Regular expression (RegExp)
<	less than	comparison operator
>	greater than	comparison operator
<=	less than or equal to	comparison operator
>=	greater than or equal to	comparison operator
=>	fat arrow	used in a lambda and in a Func definition to signify 'returns'
_	underscore	the only punctuation symbol that may be used within a named value identifier or a Type name , also used when referring to an item in a Tuple, e.g. item_2
'	single quote apostrophe	delimiter for a literal `String str string String String` that may contain double quotes
"	double quotes	delimiter for a literal `String str string String String` that may contain sengle quotes See also the constant quotes
#	hash	automatically prefaces a comment

Elan Index and Symbols go to the top