ILOG OPL Development Studio Language Reference Manual

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Boolean methodsThere is only one Boolean method.Boolean methodSyntax Effectboolean.toString() Returns a string representing the Boolean value, either "true" or "false".Example:true.toString -> "true" false.toString -> "false"234I L O G O P L D E V E L O P M E N T S T U D I O L A N G U A G ER E F E R E N C E M A N U A L
Logical operatorsThe following Boolean operators are available.Note: For C/C++ programmers: These operators are the same as in C and C++.Logical operatorsSyntax! booleanexp1 && exp2EffectLogical negation.Examples:! true -> false ! false -> trueReturns true if both Boolean expressions exp1 and exp2 are true. Otherwise,returns false.If exp1 is false, this expression immediately returns false without evaluatingexp2, so any side effects of exp2 are not taken into account.Examples:true && true -> true true && false -> false false && whatever -> false; whatever isnot evaluated.exp1 || exp2Returns true if either Boolean expression exp1 or exp2 (or both) is true.Otherwise, returns false.If exp1 is true, this expression immediately returns true without evaluating exp2,so any side effects of exp2 are not taken into account.Examples:false || true -> true false || false -> false true || whatever -> true; whatever is notevaluated.condition ? exp1 :exp2If condition is true, this expression returns exp1 ; otherwise, it returns exp2.When condition is true, the expression exp2 is not evaluated, so any sideeffects it may contain are not taken into account. Similarly, when condition isfalse, exp1 is not evaluated.Examples:true ? 3.14 : whatever -> 3.14 false ? whatever : "Hello" -> "Hello"I L O G O P L D E V E L O P M E N T S T U D I O L A N G U A G ER E F E R E N C E M A N U A L235
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CopyrightCOPYRIGHT NOTICECopyright
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C O N T E N T STable of contentsLan
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Language Reference ManualThis manua
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OPL, the modeling languagePresents
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ModelsDescribes the overall structu
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}ctMaxTotal:Gas + Chloride
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Data typesDescribes basic data type
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Basic data typesDescribes integers,
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FloatsShows how to declare floats i
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Data structuresDescribes how the ba
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The range float declarationA range
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{Edge} Edges = {, , };int a[Edges]
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TuplesData structures in OPL can al
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In Declaring a tuple using a set of
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SetsDefinitionSets are non-indexed
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Sorted and ordered setsBy default,
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The data shows that the team includ
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Data sourcesDescribes data and data
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Data initializationDefines internal
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{Ship} shipData = ...;and assume th
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* .dat file */a = #[“Monday”: 1
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}}the same can be expressed with th
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Initializing tuplesYou initialize t
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Initializing setsYou can initialize
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As generic setsOPL supports generic
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Initialization and memory allocatio
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Database initializationDescribes ho
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Supported databasesSupported databa
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Reading from a databaseIn OPL, data
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DBconnection db("oracle9", connecti
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Note: OPL supports the same element
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Spreadsheet Input/OutputDescribes h
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Connection to a spreadsheetThe spre
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♦Sets of tuples: The data has to
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Data consistencyDefines the purpose
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Data membership consistencyThe keyw
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AssertionsOPL provides assertions t
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execute{writeln(s2);s1.add(3);write
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Decision typesVariables in an OPL a
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tuple Route {City orig;City dest;}{
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Dynamic collection of elements into
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The all syntaxThen, the all syntax
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Appending arraysYou can also concat
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ExpressionsDescribes data and decis
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Data and decision variable identifi
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(condition)?thenExpr : elseExprwher
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Piecewise-linear functionsPiecewise
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eakpoint[k-1] < ship[o][d] 0; 0}(1,
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Figure The discontinuous piecewise
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x == y;signx == piecewise{0->0; 2->
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Functions over setsFunction Descrip
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ConstraintsSpecifies the constraint
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Using constraintsExplains how to ap
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Conditional constraintsIf-then-else
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Constraint labelsExplains why label
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Labeling constraintsTo label a cons
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subject to {forall( p in Products ,
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Limitations to constraint labelingN
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Compatibility between constraint na
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Types of constraintsDescribes const
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Discrete constraintsDiscrete constr
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Implicit constraintsImplicit constr
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Symbol=>!===MeaningImplyDifferent f
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Constraints available in constraint
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♦Interval grouping constraint: al
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Formal parametersDescribes basic fo
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{forall(i in 1..8)forall(j in 1..8:
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Tuples of parametersOPL allows tupl
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int array[i in set1] = ((sum(j in s
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SchedulingDescribes how to model sc
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IntroductionILOG OPL Development St
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Piecewise linear and stepwise funct
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I L O G O P L D E V E L O P M E N T
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e equal to 1. For a fixed interval
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ExamplesFor examples of using inter
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Precedence constraints between inte
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A logical constraint between interv
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Important:The piecewise linear func
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♦prev(p, a, b) states that if bot
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Cumulative functionsIn scheduling p
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Constraints on cumul function expre
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Syntax and examplesFor the syntax a
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♦That everywhere over a given fix
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in state s. If algn e is true, it m
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NotationsThe main notations used th
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ILOG Script for OPLDescribes the st
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Language structurePresents the stru
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SyntaxWhat composes a scripting sta
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Compound statementsA compound state
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IdentifiersIdentifiers are used to
Page 183 and 184: Expressions in ILOG ScriptExpressio
Page 185 and 186: LiteralsLiterals can represent the
Page 187 and 188: Syntax of different types of expres
Page 189 and 190: Property accessThere are two ways o
Page 191 and 192: Function callsSyntactic shorthandSy
Page 193 and 194: Special operatorsSpecial operator s
Page 195 and 196: Other operatorsOther operators are
Page 197 and 198: StatementsA statement can be a cond
Page 199 and 200: SyntaxEffectfor (var i=0; i < a.len
Page 201 and 202: Outside a function definitionAt the
Page 203 and 204: Default valuesDefault value syntaxS
Page 205 and 206: Built-in values and functionsPresen
Page 207 and 208: NumbersNumber representations and f
Page 209 and 210: IntroductionNumbers can be expresse
Page 211 and 212: Hexadecimal numbersA hexadecimal nu
Page 213 and 214: Special numbersThere are three spec
Page 215 and 216: Number methodsThere is only one num
Page 217 and 218: Numeric constantsThe following nume
Page 219 and 220: Syntax~ xx > yx >>> yEffectBitwise
Page 221 and 222: ILOG Script stringsString represent
Page 223 and 224: Examples of string literals using e
Page 225 and 226: String propertiesThere is a single,
Page 227 and 228: Syntaxstring.toUpperCase()EffectExa
Page 229 and 230: String operatorsString operatorsSyn
Page 231 and 232: ILOG Script BooleansBoolean represe
Page 233: Automatic conversion to BooleanWhen
Page 237 and 238: ILOG Script arraysArray representat
Page 239 and 240: Array constructorThe array construc
Page 241 and 242: Array methodsArray methodsSyntaxarr
Page 243 and 244: ObjectsObject representation and fu
Page 245 and 246: Defining methodsSince a method is r
Page 247 and 248: Object constructorObject constructo
Page 249 and 250: Built-in methodsThere is only one o
Page 251 and 252: DatesDate representation and functi
Page 253 and 254: Date constructorThe date constructo
Page 255 and 256: Date methodsDate methodsSyntaxdate.
Page 257 and 258: Date functionsDate functionsSyntaxD
Page 259 and 260: The null valueThe null value is a s
Page 261 and 262: ILOG Script functionsIn ILOG Script
Page 263 and 264: I N D E XIndexABabs, OPL function 9
Page 265 and 266: limitations in tuples 29ranges 22se
Page 267 and 268: GHIgeneric sets 51, 137groundbreakp
Page 269 and 270: NOfor the null value 259for the und
Page 271 and 272: sparsityand multidimensional arrays
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ILOG OPL Development Studio Language Reference Manual

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