Class: Objective

Represents an optimization objective in the model.

Remarks

An objective specifies what value should be minimized or maximized when solving the model. Objectives are created by calling Model.minimize or Model.maximize, or by using the fluent methods IntExpr.minimize or IntExpr.maximize.

A model can have at most one objective.

import * as CP from "optalcp";

const model = new CP.Model();
const x = model.intervalVar({length: 10, name: "x"});
const y = model.intervalVar({length: 20, name: "y"});

// Create objective using Model.minimize() - automatically registered:
model.minimize(y.end());

// Or using fluent style on expressions - automatically registered:
y.end().minimize();

See

• Model.minimize for creating minimization objectives.
• Model.maximize for creating maximization objectives.
• IntExpr.minimize for fluent-style minimization.
• IntExpr.maximize for fluent-style maximization.

Extends

• ModelElement

Accessors

name

Get Signature

get name(): string | undefined

The name assigned to this model element.

Remarks

The name is optional and primarily useful for debugging purposes. When set, it helps identify the element in solver logs, error messages, and when inspecting solutions.

Names can be assigned to any model element including variables, expressions, and constraints.

Example

import * as CP from "optalcp";

const model = new CP.Model();

// Name a variable at creation
const task = model.intervalVar({ length: 10, name: "assembly" });

// Or set name later
const x = model.intVar({ min: 0, max: 100 });
x.name = "quantity";

console.log(task.name);  // "assembly"
console.log(x.name);     // "quantity"

Returns

string | undefined

Set Signature

set name(value: string): void

Parameters

Parameter	Type
value	string

Returns

void

Inherited from

ModelElement.name

Constructors

Constructor

new Objective(): Objective

Returns

Objective

Inherited from

ModelElement.constructor