Preallocate spans slice

pavolloffay · pavolloffay · commit 78db3147a744 · 2017-11-15T16:03:28.000+01:00
Signed-off-by: Pavol Loffay &lt;ploffay@redhat.com&gt;
diff --git a/cmd/collector/app/zipkin/jsonv2.go b/cmd/collector/app/zipkin/jsonv2.go
@@ -21,7 +21,7 @@ import (
 )
 
 func spansV2ToThrift(spans models.ListOfSpans) ([]*zipkincore.Span, error) {
-	var tSpans []*zipkincore.Span
+	tSpans := make([]*zipkincore.Span, 0, len(spans))
 	for _, span := range spans {
 		tSpan, err := spanV2ToThrift(span)
 		if err != nil {

Original file line number	Diff line number	Diff line change
`@@ -21,7 +21,7 @@ import (`
`21`	`21`	`)`
`22`	`22`
`23`	`23`	`func spansV2ToThrift(spans models.ListOfSpans) ([]*zipkincore.Span, error) {`
`24`		`- var tSpans []*zipkincore.Span`
	`24`	`+ tSpans := make([]*zipkincore.Span, 0, len(spans))`
`25`	`25`	`for _, span := range spans {`
`26`	`26`	`tSpan, err := spanV2ToThrift(span)`
`27`	`27`	`if err != nil {`