Reference

? Q("bread").IsLowercase()
#--> 1

o1 = new stzStringChar("a")
? o1.IsMark()
#--> 0

o1 = new stzStringText("The quick brown fox. It jumps!")
? o1.IsWord()
#--> 0

o1 = new stzStringList([ "tea", "rice", "fish" ])
? o1.Longest()
#--> tea

o1 = new stzStringChecker("user@example.com")
? o1.IsChar()
#--> 0

o1 = new stzStringRemover("hello <<world>> there")
? o1.IsEmpty()
#--> 0

o1 = new stzStringReplacer("Hello 123 World 456")
? o1.IsEmpty()
#--> 0

o1 = new stzStringCharList("hello")
? o1.Size()
#--> 5

o1 = new stzStringLocale("fr_FR")
? o1.HasRTL()
#--> 0

o1 = new stzStringFormatter("hello world")
? o1.IsEmpty()
#--> 0

o1 = new stzStringEncoder("hello%20world")
? o1.IsEmpty()
#--> 0

o1 = new stzStringBounder("<<hello>> and <<world>>")
? o1.Char(2)
#--> <

o1 = new stzStringLeadTrail("HelloYYY")
? o1.IsEmpty()
#--> 0

o1 = new stzStringCrypto("plain ascii text")
? o1.IsEmpty()
#--> 0

o1 = new stzStringComparator("rest_ababab")
? o1.IsEmpty()
#--> 0

cDup = "aaa" + NL + "bbb" + NL + "aaa"
o1 = new stzStringLines(cDup)
? o1.IsEmpty()
#--> 0

o1 = new stzStringUnicodeList([ 97, 98, 99 ])
? o1.IsEmpty()
#--> 0

o1 = new stzStringCounter("abc 123 def 456 ghi 789")
? o1.IsEmpty()
#--> 0

o1 = new stzStringSplitter("one;two,three:four")
? o1.IsEmpty()
#--> 0

o1 = new stzStringNumbers("price is 42 and tax is 8")
? o1.IsEmpty()
#--> 0

o1 = new stzStringSubStringCS("an", "banana", TRUE)
? o1.Removed()
#--> ba

o1 = new stzStringIO("hello")
? o1.IsEmpty()
#--> 0

o1 = new stzStringWords("hello dear world dear")
? o1.IsEmpty()
#--> 0

o1 = new stzStringCaseChanger("hello world foo")
? o1.IsEmpty()
#--> 0

o1 = new stzStringTrimmer("  hello world  ")
? o1.IsEmpty()
#--> 0

o1 = new stzStringCode("hello")
? o1.IsEmpty()
#--> 0

cWalk = StzChar(1605) + StzChar(1585) + StzChar(1581)
o1 = new stzStringWalker(cWalk)
? o1.IsEmpty()
#--> 0

o1 = new stzStringDuplicates("hello world hello")
? o1.IsEmpty()
#--> 0

o1 = new stzStringAligner("hi")
? o1.IsEmpty()
#--> 0

o1 = new stzStringConcat("Hello")
? o1.IsEmpty()
#--> 0

o1 = new stzStringSections("ABCDEFGHIJ")
? o1.IsEmpty()
#--> 0

o1 = new stzStringVisualizer("hello")
? o1.IsEmpty()
#--> 0

o1 = new stzWordStream()
o1.SetCaseSensitive(TRUE)
o1.Feed("Cat cat")
? o1.DistinctWords()
#--> 2

o1 = new stzStringPerformer("hello")
? o1.IsEmpty()
#--> 0

o1 = new stzStringBoxed("hello")
? o1.NumberOfChars()
#--> 5

o1 = new stzChar("LATIN LETTER SMALL CAPITAL G")
? o1.StzType()
#--> stzchar

o1 = new stzRegex("pre\w+")
? o1.MatchWordsIn("prefix preprocess present compress")  # matches pre* words
? o1.MatchWordsIn("compress")
#--> 1
#--> 0

o1 = new stzTablex("{cols(3) & contains(Tunis)}")
? o1.CountTokens()
#--> 1

oMx = new stzMatrex("{size(1x1)}")
aMatrix = [[42]]
? oMx.Match(aMatrix)
#--> 1

oNx = new stzNumbrex("{@Property(Prime)}")
? oNx.Match(17)
? oNx.Match(18)
#--> 1
#--> 0

o1 = new stzTimex("{@Duration(1h..2h:15min)}")
? o1.Pattern()
#--> {@Duration(1h..2h:15min)}

o1 = new stzListex("[@N+, @S{hello;world}U, @L?]")
? o1.Match([ "an", "a" ])
#--> 0

o1 = new stzRecursiveRegexMaker()
o1.AddLevel("outer", "[(]")
o1.AddChildLevel("outer", "inner", "[0-9]+")
? o1.NumberOfLevels()
#--> 2

o1 = new stzRegexLookaroundMaker()
? @@( o1.Info() )
#--> [ [ "direction", "" ], [ "type", "" ], [ "lookpattern", "" ], [ "mainpattern", "" ], [ "pattern", "" ] ]

o1 = new stzConditionalRegexMaker()
o1.IfEndsWith("http")
? o1.Pattern()
#--> (?(?=http$))

o1 = new stzListNamedParams([ :N, 3 ])
? o1.IsNNamedParam()
#--> 1

o1 = new stzList(1:3)
? o1.Reversed()
#--> 3
#--> 2
#--> 1

o1 = new stzHashList([ :math = 18, :stats = 16, :history = 14 ])
? o1.ValueByKey(:stats)
? o1[:stats]
#--> 16
#--> 16

o1 = new stzGrid([3, 2])
o1.MoveTo(1, 1)
o1.MoveLeft() # Won't move and stays on same position
? @@( o1.Position() )
#--> [ 1, 1 ]

o1 = new stzListOfPairs([ [ 1, "a" ], [ 2, "b" ], [ 3, "c" ] ])
? o1.NumberOfPairs()
#--> 3

o1 = StzFalseObjectQ()
? o1.StzType()
#--> stzfalseobject

o1 = new stzListChecker([1, "hello", 3])
? o1.IsPair()
#--> 0

o1 = new stzListOfLists([[10, 20, 30], [40, 50, 60]])
? o1.NumberOfLists()
#--> 2

oY = new stzYielder([ 12, 0, 30, -5, 18 ])
? @@( oY.Filter(:IsPositive) )
? @@( oY.Map(:Double) )
? oY.Reduce(:Sum)
#--> [ 12, 30, 18 ]
#--> [ 24, 0, 60, -10, 36 ]
#--> 55

o1 = new stzListReplacer(["Foo", "foo", "FOO", "bar"])
? o1.IsEmpty()
#--> 0

o1 = new stzListSorter([3, 1, 4, 1, 5, 9, 2, 6])
? o1.Min()
#--> 1

o1 = new stzListFlattener([[[[1]], [[2, 3]]], [[[4]]]])
? o1.IsEmpty()
#--> 0

o1 = new stzItemCS("A", [ "A", "a", "B", "a" ], 0)
? o1.NthPosition(2)
#--> 0

o1 = new stzListParser([ 1, 2, 3, 4, 5, 6, 7, 8 ])
? o1.NextItem()
#--> 2

o1 = new stzSplitter(5)
? @@( o1.GetPairsFromPositions([ 3, 5 ]) )
? @@( o1.GetPairsFromPositions([ 1, 4 ]) ) + NL
#--> [ [ 1, 3 ], [ 3, 5 ] ]
#--> [ [ 1, 4 ], [ 4, 5 ] ]

o1 = new stzListFinder(["a", "b", "a", "c", "a", "b"])
? o1.IsEmpty()
#--> 0

o1 = new stzListClassifier(["x", "y", "x", "z", "x", "y"])
? o1.IsEmpty()
#--> 0

o1 = new stzListGetter(["a", "b", "c", "d", "e"])
? o1.IsEmpty()
#--> 0

o1 = new stzListMerger([1, 2, 3, 4, 5, 6])
? o1.IsEmpty()
#--> 0

o1 = new stzListRemover(["first", "second", "third"])
? o1.IsEmpty()
#--> 0

o1 = new stzListSplits([1, 2, 3, 4, 5, 6, 7, 8])
? o1.IsEmpty()
#--> 0

o1 = new stzListComparator(["a", "b", "c", "d"])
? o1.IsEmpty()
#--> 0

o1 = new stzListDuplicates(["a", "b", "c", "a", "b", "d"])
? o1.IsEmpty()
#--> 0

o1 = new stzListMover(["a", "b", "c", "d", "e"])
? o1.IsEmpty()
#--> 0

o1 = new stzListWalker([1, 2, 3, 4, 5])
? o1.IsEmpty()
#--> 0

o1 = new stzSet([1, 2, 3, 2, 1])
? o1.NumberOfSubsets()
#--> 0

o1 = new stzListBounder(["a", "b", "c", "d", "e"])
? o1.IsPair()
#--> 0

o1 = new stzListExtractor([1, "a", 2, "b", 3])
? o1.IsEmpty()
#--> 0

o1 = new stzListStringify(["hello", "world", "zig"])
? o1.IsEmpty()
#--> 0

o1 = new stzListTrimmer(["", "", "x", "y", "", ""])
? o1.IsEmpty()
#--> 0

o1 = new stzRateLimiter("front")
? o1.Name_()
#--> front

o1 = new stzListCounter([1, "two", 3, "four", 5])
? o1.Count(3)
#--> 1

o1 = new stzListLeadTrail(["hello", "world", "test"])
? o1.IsEmpty()
#--> 0

o1 = new stzValidator()
? o1.IsValid()
#--> 1

o1 = new stzListOfSections([ [ 8, 11 ], [ 9, 12 ], [ 10, 13 ], [ 11, 14 ], [ 12, 15 ], [ 26, 29 ] ])
? @@( o1.Merged() )
#--> [ [ 8, 15 ], [ 26, 29 ] ]

o1 = new stzPair([ 1, 2 ])
? o1.Item1()
#--> 1

o1 = new stzListInString('[ "alpha", "beta", "gamma" ]')
? o1.ListInString()
#--> [ "alpha", "beta", "gamma" ]

o1 = new stzListInserter(["1", "2", "3"])
? o1.IsEmpty()
#--> 0

o1 = new stzListSections([10, 20, 30, 40, 50])
? o1.IsEmpty()
#--> 0

o1 = new stzPattern("red ~ blue [green green]")
? o1.Period()
#--> 1

o1 = new stzLatencyHistogram()
? o1.P50()
#--> 0

o1 = new stzListPerformer([1, 2, 3, 4, 5])
? o1.IsEmpty()
#--> 0

o1 = new stzStateMachine("idle_only")
? o1.Name()
#--> idle_only

# the @char form lowers to This[@i]
? StzCCodeQ('@char = "I"').Transpiled()
#--> This[@i] = "I"

o1 = new stzDeepList([ "A", [ "h","B",[ "C","h","D","h" ],"h","E","h" ], "E" ])
? o1.DeepContains(3)
#--> 0

o1 = new stzEngineTimeline()
? o1.Duration()
#--> 0

o1 = new stzRelation()
? o1.Count()
#--> 0

o1 = new stzOccurrences([ 2, 4 ], "an", "banana")
? @@( o1.String() )
#--> "NULL"

o1 = new stzRetryBudget(1, 10)
? o1.Allow()
#--> 1

o1 = new stzTraceContext()
? o1.IsValid()
#--> 1

o1 = StzNullObjectQ()
? o1.StzType()
#--> stznullobject

o1 = new stzPairOfLists([ 1, 2 ], [ 3, 4 ])
? @@( o1.FirstList() )
#--> [ 1, 2 ]

o1 = new stzSection(2, 5, 10)
? o1.EndPos()
#--> 5

o1 = StzTrueObjectQ()
? o1.W("@item > 3")
#--> 0

oL = new stzList([ 1, 2 ])
o1 = new stzObjectGuard(oL, :Pair)
? o1.Keyword()
#--> pair

o1 = new stzSortedList([ "banana", "apple" ])
o1.Add("tea")
? @@( o1.Content() )
#--> [ "apple", "banana", "tea" ]

o1 = new stzCounter([ :StartAt = 1, :WhenYouReach = 3, :RestartAt = 1 ])
? @@( o1.Counting(3) )
#--> [ 1, 2, 1 ]

o1 = new stzParser("a + b")
? o1.Source()
#--> a + b

? Q(5).IsBetween(2, 7)
#--> 1

? StzListOfNumbersQ([ 1, 2, 3 ]).AddedToEach(5)
#--> 6
#--> 7
#--> 8

o1 = new stzListOfBytes("Hello, World!")
? o1.Size()
#--> 13

oM = new stzMatrix([ [1,0,3], [4,0,6], [7,0,9] ])
oM.MultiplyCols([1, 3], :By = 2)
# columns 1 and 3 doubled, column 2 untouched
? @@(oM.Content())
#--> [ [ 2, 0, 6 ], [ 8, 0, 12 ], [ 14, 0, 18 ] ]

o1 = new stzUMAP([ [ 1, 2 ], [ 2, 3 ], [ 8, 9 ], [ 9, 8 ], [ 1, 1 ], [ 8, 8 ] ])
? o1.UsesPCA()
#--> 0

o1 = new stzTSNE([ [ 1, 2 ], [ 2, 3 ], [ 8, 9 ], [ 9, 8 ], [ 1, 1 ], [ 8, 8 ] ])
? o1.UsesPCA()
#--> 0

oM = StzMathMotionQ(:Function, [ :f = "{a} * sin(x)", :on = [ -6.3, 6.3 ], :mark = [ :extrema ], :maxmarks = 3 ])
oM.Param("a", 1, 3, 1)
? oM.Value("a")
#--> 1

o1 = new stzBinaryNumber("0b00101011000011")
? o1.ToHexForm()
#--> 0xAC3

aNames = [ [ "1-24", "25-74", "75-199", "200++", "NA" ], [ "1973", "1974", "1975" ] ]
oRes = StzMathFigureQ(:ResidualPlot, [ :of = aDeaths, :names = aNames ])
? oRes.Why()
? len( oRes.Violations() )
#--> a residual-versus-fit of 5 x 3 cells: common 8, residual fourth-spread 1, 4 beyond the outside fences, 2 far out, 3 ringed on another cell's spot; nothing to lay out -- no rule minted an unknown
#--> 0

o1 = new stzNumBuffer([ 2, 4, 4, 4, 5, 5, 7, 9 ])
? o1.Min()
#--> 2

o1 = new stzPCA([ [1,2] ])
? o1.IsFitted()
#--> 0

o1 = new stzHexNumber("0xff")
? o1.IsHexNumber()
#--> 1

o1 = new stzPolynomial([1, -3, -5, 5, -6, 8])
? o1.Degree()
#--> 5

o1 = new stzOctalNumber("0o377")
? o1.ToHexForm()
#--> 0xFF

o1 = new stzMathClaim("3^2 + 4^2 + 1 = 5^2")
? o1.Rhs()
#--> 5^2

o1 = new stzComplex(1, -2)
? o1.IsReal()
#--> 0

o1 = new stzFourier([3,3,3,3,3,3,3,3])
? o1.Count()
#--> 8

o1 = new stzPairOfNumbers([ 2.07, 0.39 ])
? o1.SpeedUp()
#--> 5.31

o1 = new stzVectorIndex([ [1,2], [3,4] ])
? o1.Count()
#--> 2

o1 = new stzMathClaimSet("a tampered lesson")
? o1.Count()
#--> 0

o1 = new stzSimilarity()
? o1.MagnitudeOf([ 3, 4 ])
#--> 5

o1 = new stzObjective("-(x-3)^2 + 7", [ "x" ])
? o1.Expression()
#--> -(x-3)^2 + 7

oF = new stzMathFunction("x^3 - 2*x", [ "x" ])
? oF.ValueAt([ 2 ])
#--> 4

o1 = new stzSequence("s", 1, 2, 1)
? o1.Name()
#--> s

o1 = new stzDecimalToBinary("-0.625")
? o1.ToBinaryForm()
#--> 0b-0.101

o1 = StzOptimSentenceQ("maximize x
where x is between 0 and 5
and keeping x somewhere near 3")
? o1.IsValid()
#--> 0

oTab = new stzTable([ [ :Region, :Product, :Sales ], [ "N", "A", 10 ], [ "N", "B", 30 ], [ "S", "A", 40 ], [ "S", "B", 50 ] ])
o1 = new stzPivotTable(oTab)
? o1.ClassName()
#--> stzpivottable

o1 = new stzUnicodeData()
? o1.CharByUnicode(65)
#--> A

oNow = StzDateTimeQ("")
? oNow.IsNow()
? oNow.IsToday()
#--> 1
#--> 1

o1 = new stzCalendar([2024, "Q3"])
? o1.Year()
#--> 2024

? StzDateQ("15/07/2024").WeekNumber()
#--> 29

o1 = new stzTimeLine(:From = "2024-10-10", :To = "2024-10-22 16:40:00")
? @@NL(o1.Content()) # Time is added automatically to "2024-10-10"
#--> [
#--> 	[ "start", "2024-10-10 00:00:00" ],
#--> 	[ "end", "2024-10-22 16:40:00" ],
#--> 	[ "points", [  ] ],
#--> ...

? StzLocaleQ("ru_RU").Country()
#--> russia

oTime = new stzTime(52245)
? oTime.ToString()
#--> 14:30:45

oDuration = new stzDuration(3665)
? oDuration.Content() # Or ToString() or Duration()
#--> 1:01:05

o1 = new stzCountry(:american_samoa)
? o1.Number()
#--> 4

o1 = new stzLanguage("English")
? o1.Number()
#--> 31

o1 = new stzScript(:Arabic)
? o1.Number()
#--> 1

o1 = new stzCurrency(:united_states)
? o1.Base()
#--> 100

? WhatQ().TheQ().AbsQ().Of(12)
#--> 12

o1 = new stzText("Alice met Bob in Paris. The weather was fine.")
? o1.IsPositive()
#--> 1

o1 = new stzNaturalEngine("en", "", [], "")
? o1.AllYes()
#--> 0

o1 = new stzChainOfValue("x")
? o1.VarName()
#--> x

o1 = new stzEntity([ :name = "toyota", :type = "car" ])
? o1.Size()
#--> 3

o1 = new stzListOfEntities([ [ :name = "alice", :type = "person", :age = 30 ], [ :name = "bob", :type = "person", :age = 25 ], [ :name = "ferrari", :type = "car", :brand = "ferrari" ] ])
? o1.IsEmpty()
#--> 0

o1 = new stzDLM("restaurant")
? o1.Domain()
#--> restaurant

o1 = new stzCorpus("seed document about cats")
? o1.FreqOf("an")
#--> 0

o1 = new stzParseTree("S")
? o1.Label()
#--> S

o1 = new stzTruthChain(1)
? o1.Holds()
#--> 0

o1 = new stzKMeans([ [1,1], [1,1], [1,1] ])
? o1.Inertia()
#--> 0

o1 = new stzOrdinal(3)
? o1.Number()
#--> 3

o1 = new stzListOfTexts([ "a", "b" ])
? o1.MostRelevantTo("a")
#--> a

o1 = new stzApriori([ [ "bread", "milk" ], [ "bread", "milk" ] ])
? o1.NumberOfTransactions()
#--> 2

o1 = new stzSupposition("s")
? o1.Name()
#--> s

o1 = new stzCan(1)
? o1.BeA("a")
#--> 0

o1 = new stzMust("number")
? o1.BeA("a")
#--> 0

o1 = new stzCanvas(1240, 1000)
? o1.Width()
#--> 1240

o1 = new stzScene(1100, 660)
? o1.Width()
#--> 1100

o1 = new stzFrameGraph(256, 256)
? o1.PassCount()
#--> 0

o1 = new stzMaterialMaker()
o1.TakesColor(:tint)
o1.ForEachFragment('{ @out = tint * @lambert }')
? o1.Spec()
#--> color tint
#--> body { @out = tint * @lambert }

o1 = new stzMesh([ :Torus, 1.5, 0.55, 96, 48 ])
? o1.Stride()
#--> 8

o1 = new stzTheme(:pro)
? o1.Name()
#--> pro

cJ = '{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"name":"A"},"geometry":{"type":"Polygon","coordinates":[[[0,0],[4,0],[4,4],[0,4],[0,0]]]}}]}'
oF = StzGeoFeaturesFromJson(cJ)
o1 = StzGeoMap(new stzGeoProjection(:mercator), oF)
? o1.IsSound()
#--> 1

o1 = new stzGeoProjection(:CylindricalEqualArea)
? o1.IsConic()
#--> 0

o1 = new stzGeoEllipsoid(:WGS84)
? o1.Name()
#--> WGS84

o1 = StzGeoField([ 0, 0, 1, 1, 3, 3 ], [ 1, 2, 3, 4, 5, 6, 7, 8, 9 ])
? o1.Min()
#--> 1

cJ = '{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"name":"A"},"geometry":{"type":"Polygon","coordinates":[[[0,0],[4,0],[4,4],[0,4],[0,0]]]}}]}'
o1 = StzGeoFeaturesFromJson(cJ)
? o1.Count()
#--> 1

cJ = '{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"name":"A"},"geometry":{"type":"Polygon","coordinates":[[[0,0],[4,0],[4,4],[0,4],[0,0]]]}}]}'
oW = StzGeoFeaturesFromJson(cJ)
o1 = StzGeoPoints([ 1, 1, 2, 2, 3, 3 ], oW)
? o1.Count()
#--> 3

cJ = '{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"name":"A"},"geometry":{"type":"Polygon","coordinates":[[[0,0],[4,0],[4,4],[0,4],[0,0]]]}}]}'
oW = StzGeoFeaturesFromJson(cJ)
o1 = StzGeoSamples([ 1, 1, 10, 2, 2, 20, 3, 3, 30 ], oW)
? o1.Count()
#--> 3

cJ = '{"type":"FeatureCollection","features":[{"type":"Feature","properties":{"name":"A"},"geometry":{"type":"Polygon","coordinates":[[[0,0],[4,0],[4,4],[0,4],[0,0]]]}}]}'
oF = StzGeoFeaturesFromJson(cJ)
o1 = StzGeoAtlas(oF)
? o1.Count()
#--> 1

g = new stzGraph("linear")
o1 = new stzGraphPlanner(g)
? o1.HistorySize()
#--> 0

o1 = new stzMathDiagram(StzGraphDomain(), new stzMathSubstance(StzGraphDomain()), StzCurvedGraphStyle())
? o1.Energy()
#--> 0

o1 = new stzWorkflow("affirm65b")
? o1.IsSequential()
#--> 1

oRest = new stzKnowledgeGraph("restaurant")
oRest.Know("margherita", "dish").Know("tiramisu", "dish")
oRest.AddConversationQ("setup").SetGoal(StzGoalQ().RequireEach("dish", "contains"))
? len( oRest.GapsIn("setup") )
#--> 2

o1 = new stzNotation("ring56")
? o1.OneInk()
#--> 0

o1 = new stzGraphRule("no-llm-effectful-probe")
? o1.Order()
#--> 0

o1 = new stzFaultTree("repeated")
? o1.GovernanceIsSound()
#--> 0

o1 = new stzMathSubstance(StzDotDomain())
? o1.HasObject("a")
#--> 0

o1 = new stzPetriNet("witness")
? o1.GovernanceIsSound()
#--> 1

o1 = new stzScopedRule("r")
? o1.Name_()
#--> r

o1 = new stzFamilyTree("generations")
? o1.GenerationOf("an")
#--> 1

o1 = StzCurvedGraphStyle()
? o1.Margin()
#--> 36

o1 = new stzNetworkDiagram("witness")
? o1.GovernanceIsSound()
#--> 1

o1 = StzGraphDomain()
? o1.Name_()
#--> graph

o1 = new stzRuleReport("structured-output-gate")
? o1.IsSound()
#--> 1

o1 = new stzErDiagram("participation")
? o1.GovernanceIsSound()
#--> 1

o1 = new stzGraphRuleSet("sla")
? o1.Name()
#--> sla

o1 = new stzRuleGovernance("g")
? o1.Name_()
#--> g

o1 = new stzGraphGoal("fast")
? o1.Name_()
#--> fast

o1 = new stzColorResolver()
? o1.ResolveFontColor(TRUE)
#--> black

o1 = new stzDiagramAnnotator(:Performance)
? o1.Type()
#--> performance

o1 = new stzStylParser()
? @@( o1.Parse("a") )
#--> [ [ "name", "" ], [ "theme", "neutral" ], [ "layout", "topdown" ], [ "colors", [ ] ], [ "fonts", [ ] ], [ "edges", [ ] ], [ "nodes", [ ] ], [ "focus", [ ] ], [ "custom", [ ] ] ]

o1 = new stzDataSet([ 30, 10, 20, 50, 40 ])
? @@(o1.SortedData())
#--> [ 10, 20, 30, 40, 50 ]

o1 = new stzHistogram([ 1, 2, 2, 3, 3, 3, 4, 4, 5 ])
? o1.Mean()
#--> 3

o1 = new stzScatterPlot([ [1,2], [3,5], [6,9], [5,4] ])
? o1.PointChar()
#--> ●

o1 = new stzBarPlot([ [ "A", 100 ], [ "B", 300 ] ])
? o1.Sum()
#--> 400

o1 = new stzDataWrangler([ [ "  John ", "25", "sales" ], [ "John", "25", "sales" ], [ "mary", "", "mkt" ] ], [ "Name", "Age", "Dept" ])
? o1.TrimWhitespace()
#--> 1

o1 = new stzMBarPlot([ :Mali = [ :y2020 = 42, :y2022 = 18 ], :Niger = [ :y2020 = 87, :y2022 = 40 ] ])
? o1.SeriesCount()
#--> 2

o1 = new stzHBarPlot([ :Small = 1, :Large = 1000 ])
? o1.Width()
#--> 18

o1 = new stzCoeffExtractor(["price", "quantity"])
? @@( o1.VarNames() )
#--> [ "price", "quantity" ]

o1 = new stzGovernance("constellation-regime")
? o1.RiskOf("an")
#--> 0

cCfg = 'vat = <R:PARAM name="vat" value="0.10" min="0" max="0.25">'
o1 = new stzRefinableCode(cCfg)
? o1.CanRedo()
#--> 0

oDoc = StzSelfDocQ("stzList")
? oDoc.HowTo("remove duplicates")
? oDoc.HasMethod("DuplicatesRemoved")
#--> Q([...]).RemoveDuplicates()   -- composed by grammar (remove duplicates)
#--> 1

o1 = new stzPredicateSet("house")
? o1.Verify()
#--> 0

o1 = new stzLibDoc([ "stzText", "stzListOfTexts" ])
? o1.NumberOfClasses()
#--> 4

o1 = StzProgramQ("../../education/program")
? o1.HasWorld()
#--> 0

cL = "t_edu_levels/zara"
o1 = StzLearnerQ(cL)
? o1.Id()
#--> zara

o1 = new stzExerciseCheck("demo", [ "3" ], "? 1 + 2", [])
? o1.Id()
#--> demo