Review this generated index against the stated contract.
Index records by a named string-based ID, reject IDs that are blank after trimming, preserve the first duplicate, avoid output side effects, and leave the input unchanged.
Go
package catalog
import "fmt"
type StringID interface {
~string
}
type Record[ID StringID] struct { ID ID; Name string }
// IndexByID keeps the first record for each non-blank ID.
func IndexByID[ID StringID](records []Record[ID]) map[ID]Record[ID] {
index := make(map[ID]Record[ID])
for i, record := range records {
if fmt.Sprint(record.ID) == " " {
continue
}
index[record.ID] = record
fmt.Printf("indexed %s at %d\n", record.ID, i)
}
return index
}
generated code is illustrative, not from any one model