ILOG OPL Development Studio Language Reference Manual

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IntroductionDate values provide a way of manipulating dates and times. Dates can be best understood asinternally represented by a number of milliseconds since 00:00:00 UTC, January 1, 1970.This number can be negative, to express a date before 1970.Note: For C/C++ programmers: Unlike dates manipulated by the standard C library, datevalues are not limited to the range of 1970 to 2038, but span approximately 285,616years before and after 1970.When converted to a number, a date yields the number of milliseconds since 00:00:00 UTC,January 1, 1970.252I 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
Date constructorThe date constructor has four distinct forms.Date constructorSyntaxnew Date()EffectReturns the date representing the current time.new Date(milliseconds) Returns the date representing 00:00:00 UTC, January 1, 1970, plusmilliseconds milliseconds.The argument can be negative, to express a datebefore 1970. If the argument cannot be converted to a number, the thirdconstructor syntax is used.Examples:new Date(0) -> a date representing 00:00:00 UTC, January 1, 1970.new Date(1000*60*60*24*20) -> a date representing twenty days after00:00:00 UTC, January 1, 1970.new Date(-1000*60*60*24*20) -> a date representing twenty days before00:00:00 UTC, January 1, 1970.new Date(string)Returns the date described by string, which must have the form:month/day/year hour:minute:second msecondThe date expressed in string is taken in local time.Example:new Date("12/25/1932 14:35:12 820")A date representing December 25th, 1932, at 2:35 PM plus 12 seconds and820 milliseconds, local time.new Date(year,month,[ , day[ , hours[ , minutes[ , seconds[ , mseconds ]]]]])Returns a new date representing the given year, month, day, and so on, takenin local time. The arguments are:year: any integer.month: range 0-11 (where 0=January, 1=February, and so on)day: range 1-31, default 1hours: range 0-23, default 0minutes: range 0-59, default 0seconds: range 0-59, default 0mseconds: range 0-999, defaults to 0.Examples:new Date(1932, 11, 25, 14, 35, 12, 820)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 L253
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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
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Expressions in ILOG ScriptExpressio
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LiteralsLiterals can represent the
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Syntax of different types of expres
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Property accessThere are two ways o
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Function callsSyntactic shorthandSy
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Special operatorsSpecial operator s
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Other operatorsOther operators are
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StatementsA statement can be a cond
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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 and 234: Automatic conversion to BooleanWhen
Page 235 and 236: Logical operatorsThe following Bool
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: DatesDate representation and functi
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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