go(stats): add explanatory comments [skip ci]

stats/table.go

@@ -11,6 +11,7 @@
 	"gonum.org/v1/gonum/stat"
 )
 
+// statsRow represents the header in the table.
 type statsHdr struct {
 	Algo          string
 	BenchFuncName string
@@ -19,6 +20,7 @@ type statsHdr struct {
 	Iterations    int
 }
 
+// statsRow represents a single row in the table.
 type statsRow struct {
 	Min    float64
 	Max    float64
@@ -76,6 +78,8 @@ func statsSingleFunc(singleFuncStats []Stats) {
 	}
 }
 
+// makeTableHdr fills the table header with passed information.
+// TODO(me): add checks to assert only valid inputs are passed in.
 func makeTableHdr(
 	algo, benchFuncName string,
 	dimens, generations, iterations int,
@@ -91,6 +95,7 @@ func makeTableHdr(
 	return *hdr
 }
 
+// newStatsHdr returns a pointer to a newly created statsHdr instance.
 func newStatsHdr() *statsHdr {
 	return &statsHdr{}
 }