class ORTools::Sat::Model

• ORTools::Sat::Model
• Reference
• Object

Overview

Model class contains all the variables and constraints that define the problem The variables and constraints are stored in the CpModelProto object The Class also provides all the methods used to add variables and define constraints

Defined in:

ortools-sat/model.cr

Constructors

• .new

Instance Method Summary

• #add_all_diff(vars : Array(Expressible))
• #add_at_most_one(vars : Array(BoolVar))

  Forces at most one of the provided boolean variables to be true

• #add_bool_and(vars : Array(BoolVar), enforcement_literals = [] of BoolVar)

  Forces all of the boolean variables to be true

• #add_bool_or(vars : Array(BoolVar), enforcement_literals = [] of BoolVar)

  Forces at least one of the boolean variables to be true

• #add_bool_xor(vars : Array(BoolVar))

  Forces an odd number of the provided boolean variables to be true

• #add_constraint(constraint : LinearConstraint)

  Implements a linear constraint in the form of a <= b or a == b.

• #add_exactly_one(vars : Array(BoolVar))

  Forces exactly one of the provided boolean variables to be true

• #add_int_div(target : Expressible, exprs : Array(Expressible))

  Forces the target to equal exprs[0] / exprs[1].

• #add_int_mod(target : Expressible, exprs : Array(Expressible))

  Forces the target to be equal exprs[0] % exprs[1].

• #add_int_prod(target : Expressible, exprs : Array(Expressible))

  Forces the target to be equal to the product of the exprs.

• #add_max(target : Expressible, exprs : Array(Expressible))

  Forces target to equal the max of all exprs

• #add_min(target : Expressible, exprs : Array(Expressible))

  Forces target to equal the min of all exprs

• #add_none(vars : Array(BoolVar), enforcement_literals = [] of BoolVar)

  Forces all BoolVars provided to be false

• #add_not_all(vars : Array(BoolVar), enforcement_literals = [] of BoolVar)

  Forces at least one of the provided boolean variables to be false

• #maximize(expr : LinearExpression, domain = [] of Int64, offset : Float64 | Nil = nil, scaling_factor : Float64 | Nil = nil)

  Create an objective to minimize

• #minimize(expr : LinearExpression, domain = [] of Int64, offset : Float64 | Nil = nil, scaling_factor : Float64 | Nil = nil)

  Create an objective to minimize

• #new_bool_var(name = "")

  Provides a BoolVar for boolean variables

• #new_int_var(min : Int64, max : Int64, name = "")

  Provides an IntVar for integer variables

• #set_to_bool_and(target : BoolVar, vars : Array(BoolVar))

  Creates and equivelence between target variable and the result of the logical AND of the vars

• #set_to_bool_or(target : BoolVar, vars : Array(BoolVar))

  Creates and equivelence between target variable and the result of the logical OR of the vars

• #solve(max_time_in_seconds : Number | Nil = nil) : Solution

  Attempts to solve

Constructor Detail

Instance Method Detail