C++ Reference: class DoubleLinearExpr

Note: This documentation is automatically generated.

Method
`AddExpression`	Return type: `DoubleLinearExpr&` Arguments: `const LinearExpr& exprs, double coeff = 1.0` Adds a linear expression to the double linear expression.
`AddTerm`	Return type: `DoubleLinearExpr&` Arguments: `IntVar var, double coeff` Adds a term (var * coeff) to the linear expression.
`AddTerm`	Return type: `DoubleLinearExpr&` Arguments: `BoolVar var, double coeff`
`coefficients`	Return type: `const std::vector<double>&` Returns the vector of coefficients.
`constant`	Return type: `double` Returns the constant term.
`DebugString`	Return type: `std::string` Arguments: `const CpModelProto* proto = nullptr` Debug string. See the documentation for LinearExpr::DebugString().
`DoubleLinearExpr`
`DoubleLinearExpr`	Return type: `explicit` Arguments: `BoolVar var` Constructs a linear expression from a Boolean variable. It deals with logical negation correctly.
`DoubleLinearExpr`	Return type: `explicit` Arguments: `IntVar var` Constructs a linear expression from an integer variable.
`DoubleLinearExpr`	Return type: `explicit` Arguments: `double constant` Constructs a constant linear expression.
`IsConstant`	Return type: `const bool` Returns true if the expression has no variable.
`Sum`	Return type: `static DoubleLinearExpr` Arguments: `absl::Span<const IntVar> vars` Constructs the sum of a list of variables.
`Sum`	Return type: `static DoubleLinearExpr` Arguments: `absl::Span<const BoolVar> vars` Constructs the sum of a list of Boolean variables.
`variables`	Return type: `const std::vector<int>&` Returns the vector of variable indices.
`WeightedSum`	Return type: `static DoubleLinearExpr` Arguments: `absl::Span<const IntVar> vars, absl::Span<const double> coeffs` Constructs the scalar product of variables and coefficients.
`WeightedSum`	Return type: `static DoubleLinearExpr` Arguments: `absl::Span<const BoolVar> vars, absl::Span<const double> coeffs` Constructs the scalar product of Boolean variables and coefficients.