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chore(perf): Pre-allocate where possible (enable prealloc linter) (#88952)

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* chore(perf): Pre-allocate where possible (enable prealloc linter)

Signed-off-by: Dave Henderson <dave.henderson@grafana.com>

* fix TestAlertManagers_buildRedactedAMs

Signed-off-by: Dave Henderson <dave.henderson@grafana.com>

* prealloc a slice that appeared after rebase

Signed-off-by: Dave Henderson <dave.henderson@grafana.com>

---------

Signed-off-by: Dave Henderson <dave.henderson@grafana.com>
This commit is contained in:
Dave Henderson
2024-06-14 14:16:36 -04:00
committed by GitHub
parent e53e6e7caa
commit 6262c56132
43 changed files with 211 additions and 140 deletions
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pkg/expr/mathexp/exp.go
+5 -3
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@@ -558,8 +558,9 @@ func (e *State) biSeriesSeries(labels data.Labels, op string, aSeries, bSeries S
func (e *State) walkFunc(node *parse.FuncNode) (Results, error) {
var res Results
var err error
var in []reflect.Value
for _, a := range node.Args {
in := make([]reflect.Value, len(node.Args))
for i, a := range node.Args {
var v any
switch t := a.(type) {
case *parse.StringNode:
@@ -580,7 +581,8 @@ func (e *State) walkFunc(node *parse.FuncNode) (Results, error) {
if err != nil {
return res, err
}
in = append(in, reflect.ValueOf(v))
in[i] = reflect.ValueOf(v)
}
f := reflect.ValueOf(node.F.F)