Change String method of Individual

individual.go

@@ -27,11 +27,10 @@ func NewIndividual(genome Genome, rng *rand.Rand) Individual {
 // String representation of an Individual. A tick (✔) or cross (✘) marker is
 // added at the end to indicate if the Individual has been evaluated or not.
 func (indi Individual) String() string {
-	var evalSymbol = map[bool]string{
-		true:  "✔",
-		false: "✘",
-	}[indi.Evaluated]
-	return fmt.Sprintf("%s - %.3f - %v %s", indi.ID, indi.Fitness, indi.Genome, evalSymbol)
+	if indi.Evaluated {
+		return fmt.Sprintf("%s - %.3f - %v", indi.ID, indi.Fitness, indi.Genome)
+	}
+	return fmt.Sprintf("%s - ??? - %v", indi.ID, indi.Genome)
 }
 
 // Clone an individual to produce a new individual with a different pointer and

individual_test.go

@@ -17,7 +17,7 @@ func TestIndividualString(t *testing.T) {
 				Evaluated: true,
 				ID:        "bob",
 			},
-			str: "bob - 42.000 - [0 1 2] ✔",
+			str: "bob - 42.000 - [0 1 2]",
 		},
 		{
 			indi: Individual{
@@ -26,7 +26,7 @@ func TestIndividualString(t *testing.T) {
 				Evaluated: false,
 				ID:        "ALICE",
 			},
-			str: "ALICE - 42.000 - [0 1 2] ✘",
+			str: "ALICE - ??? - [0 1 2]",
 		},
 	}
 	for i, tc := range testCases {

individuals_test.go

@@ -26,7 +26,7 @@ func TestIndividualsString(t *testing.T) {
 					ID:        "ALICE",
 				},
 			},
-			str: "bob - 42.000 - [0 1 2] ✔\nALICE - 42.000 - [0 1 2] ✘",
+			str: "bob - 42.000 - [0 1 2]\nALICE - ??? - [0 1 2]",
 		},
 	}
 	for i, tc := range testCases {