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Utility Module Reference

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rburke edited this page Nov 13, 2011 · 67 revisions

We just started working on documenting all of the utility functions. A great way to help out and become more familiar with the modules is to help us expand the documentation by editing the reference wiki. Feel free to adjust formatting, re-organize, whatever makes it easier for everyone to find the utility modules they need.

Common Utilities

Less common math stuff

Graphics

Specialized

math

`cleanMath( expr )`

Simplify formulas before display by removing, eg, + -, - -, and ^1

rand( num )

Returns a random int in [0, num)

digits( n )

Returns an array of the digits of a nonnegative integer in reverse order

digits( 376 ) = [ 6, 7, 3 ]
  • integerToDigits

Returns an array of the digits of a nonnegative integer

digits( 376 ) = [ 3, 7, 6 ]

digitsToInteger

Returns an integer from an array of the digits

digits([ 6, 7, 3 ]) = 673

padDigitsToNum

powerToPlace

roundTowardsZero

getGCD

getLCM

getPrime

isPrime

isOdd

isEven

getOddComposite

getEvenComposite

getComposite

getPrimeFactorization

getFactors

getNontrivialFactor

getMultiples

splitRadical

randRange

randRangeUnique( min, max, count )

Returns an array (of size count) of unique numbers between min and max

randRangeWeighted

randRangeExclude

randRangeWeightedExclude

randRangeNonZero

randFromArray

randFromArrayExclude

roundTo

floorTo

ceilTo

toFraction

shuffle

sortNumbers

truncate_to_max

restoreSign

isInt

math-format

`negParens`

decimalFraction

reduce

toFractionTex

fraction

mixedFractionFromImproper

mixedFraction

fractionReduce

fractionSmall

piFraction

reduces

fractionSimplification

mixedOrImproper

splitRadical

formattedSquareRootOf

squareRootCanSimplify

cardinal

Cardinal

quadraticRoots

commafy

plus

randVar

Returns a random algebraic variable (such as "x", or "y" ) to use in expressions.

word-problems

`plural( ... )`

Pluralization helper

Return “s” if NUMBER is not 1:

plural( NUMBER )

If necessary, magically pluralize and return “NUMBER word”:

plural( NUMBER, singular )

Return “NUMBER word”:

plural( NUMBER, singular, plural )

If necessary, magically pluralize and return “word”:

plural( singular, NUMBER )

Return “word”:

plural( singular, plural, NUMBER )

person( i )

Returns a person’s name from the shuffled list

personVar( i )

Returns the lower case first letter of the person’s name

he( i )

Returns “he” or “she”

He( i )

Returns “He” or “She”

him( i )

Returns “him” or “her”

his( i )

Returns “his” or “her”

His( i )

Returns “His” or “Her”

An( word )

Returns “A”, or “An” if word starts with a vowel

an( word )

Returns “a”, or “an” if word starts with a vowel

vehicle( i )

Returns a type of vehicle from the shuffled list

vehicleVar( i )

Returns the lower case first letter of the vehicle type

course( i )

Returns the name of a course (algebra, Spanish, etc.) from the shuffled list

courseVar( i )

Returns the lower case first letter of the course name

exam( i )

Returns a synonym for exam (test, quiz, etc.) from the shuffled list

binop( i )

Returns an unusual character symbol (diamond, circle, etc.) from the shuffled list.

item ( i )

Returns an item that can be grouped

see also: group() groupVerb()

group( i )

Returns the name of a group of items

see also: item() groupVerb()

groupVerb( i )

Returns the verb describing grouping a type of item

see also: item() group()

store( i )

Returns a type of store/shop

storeItem( i, j )

Returns an item that can be bought at a particular store

  • i: which store in the shuffled list
  • j: which item in the shuffled list

see also: store

pizza( i )

Returns a round food item

exercise( i )

Returns a physical exercise

timeofday( i )

Returns a rough time of day (in the morning, at night, etc.)

school( i )

Returns the name of a school

clothing( i )

Returns an article of clothing

color( i )

Returns the name of a color

fruit( i )

Returns the name of a piece of fruit

deskItem( i )

Returns the name of an office supply

distance( i )

Returns a unit of distance (miles/kilometers)

rode( i )

Returns the past tense verb for an activity

see also: ride() bike() biked() biking()

ride( i )

Returns the infinitive verb for an activity

see also: rode() bike() biked() biking()

bike( i )

Returns the object noun for an activity

see also: rode() ride() biked() biking()

biked( i )

Returns a more specific past tense verb for an activity

see also: rode() ride() bike() biking()

biking( i )

Returns the present progressive tense verb for an activity

see also: rode() ride() bike() biked()

farmer( i )

Returns a type of farmer

see also: crop() field()

crop( i )

Returns the name of the crop grown by a farmer

see also: farmer() field()

field( i )

Returns the type of field used by a farmer

see also: farmer() crop()

side( i )

Returns “left” or “right”

shirtStyle( i )

Returns a style of shirt

math

spin

angles

calculus

congruence

convert-values

exponents

expressions

polynomials

graphie

scaleVector

scalePoint

circle

ellipse

arc

path

line

grid

label

plotParametric

plotPolar

plot

init

style

graphie-geometry

graphie-helpers-arithmetic

graphie-helpers

graphie-polygon

interactive

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