C++ Reference: class ScatteredIntegerVector

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Simple class to combine linear expression efficiently. First in a sparse way that switch to dense when the number of non-zeros grows.

Method
Add	Return type: bool Arguments: glop::ColIndex col, IntegerValue value Does vector[col] += value and return false in case of overflow.
AddLinearExpressionMultiple	Return type: bool Arguments: IntegerValue multiplier, const std::vector<std::pair<glop::ColIndex, IntegerValue>>& terms Similar to Add() but for multiplier * terms. Returns false in case of overflow.
ClearAndResize	Return type: void Arguments: int size This must be called with the correct size before any other functions are used.
ConvertToLinearConstraint	Return type: void Arguments: const std::vector<IntegerVariable>& integer_variables, IntegerValue upper_bound, LinearConstraint* result This is not const only because non_zeros is sorted. Note that sorting the non-zeros make the result deterministic whether or not we were in sparse mode. TODO(user): Ideally we should convert to IntegerVariable as late as possible. Prefer to use GetTerms().