made fitness() query return const reference
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1 changed files with 1 additions and 1 deletions
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@ -57,7 +57,7 @@ public:
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virtual ~EO() {};
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virtual ~EO() {};
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/// Return fitness value.
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/// Return fitness value.
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Fitness fitness() const {
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const Fitness& fitness() const {
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if (invalid())
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if (invalid())
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throw std::runtime_error("invalid fitness");
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throw std::runtime_error("invalid fitness");
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return repFitness;
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return repFitness;
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