histogram: simplify remove
Blake Mizerany
10 years ago
| 36 | 36 | } |
| 37 | 37 | |
| 38 | 38 | func (bs *Bins) remove(n int) *Bin { |
| 39 | old := *bs | |
| 40 | x := old[n] | |
| 41 | h := old[0:n] | |
| 42 | if n < len(old)-1 { | |
| 43 | t := old[n+1:] | |
| 44 | out := make([]*Bin, len(old)-1) | |
| 45 | copy(out, h) | |
| 46 | copy(out[len(h):], t) | |
| 47 | *bs = out | |
| 48 | } else { | |
| 49 | *bs = h | |
| 39 | a := *bs | |
| 40 | if n < 0 || len(a) < n { | |
| 41 | return nil | |
| 50 | 42 | } |
| 43 | x := a[n] | |
| 44 | *bs = append(a[:n], a[n+1:]...) | |
| 51 | 45 | return x |
| 52 | 46 | } |
| 53 | 47 |