golang > the fastest version of a slice of structs filtering will be a recreation of new slice of structs

slice_filtering.go

// ref. https://pauladamsmith.com/blog/2016/07/go-modify-slice-iteration.html
y := x[:0]
for _, n := range x {
    if n.property !=42 {
        y = append(y, n)
    }
}

// If some further sorting should be done, requires Go 1.8+
// https://stackoverflow.com/a/42872183/634275
sort.Slice(y, func(i, j int) bool {
  return y[i].ID < y[j].ID
})