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collection.go
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collection.go
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package util
import "reflect"
// Contains check whether obj exist in target, the type of target can be an array, slice or map
func Contains(obj interface{}, target interface{}) bool {
targetValue := reflect.ValueOf(target)
switch reflect.TypeOf(target).Kind() {
case reflect.Slice, reflect.Array:
for i := 0; i < targetValue.Len(); i++ {
if targetValue.Index(i).Interface() == obj {
return true
}
}
case reflect.Map:
if targetValue.MapIndex(reflect.ValueOf(obj)).IsValid() {
return true
}
}
return false
}
func MapContains(subset, fullset map[string]string) bool {
for sk, sv := range subset {
find := false
for fk, fv := range fullset {
if sk == fk && sv == fv {
find = true
break
}
}
if !find {
return false
}
}
return true
}
func MapPut(m map[string]string, k, v string) {
if m == nil {
m = make(map[string]string)
}
m[k] = v
}
func CopyMap(m map[string]string) map[string]string {
cp := make(map[string]string)
for key, value := range m {
cp[key] = value
}
return cp
}