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package main
import "reflect"
var indexableKind = map[reflect.Kind]bool{
reflect.Slice: true,
reflect.Array: true,
}
func flatten(in [][]reflect.Value) (out []reflect.Value) {
for _, a := range in {
for _, v := range a {
if !v.IsValid() {
continue
}
if indexableKind[v.Kind()] {
sub := make([]reflect.Value, v.Len())
for j := 0; j < v.Len(); j++ {
sub = append(sub, v.Index(j))
}
out = append(out, flatten([][]reflect.Value{sub})...)
continue
}
if v.CanInterface() {
if sub, ok := v.Interface().([]interface{}); ok {
for i := range sub {
out = append(out, reflect.ValueOf(sub[i]))
}
continue
}
}
out = append(out, v)
}
}
return
}
func split(in [][]reflect.Value) (x, y []reflect.Value) {
flat := flatten(in)
n := len(flat)
x = make([]reflect.Value, 0, n/2)
y = make([]reflect.Value, 0, n/2)
for i := range flat {
if i&1 == 0 {
x = append(x, flat[i])
} else {
y = append(y, flat[i])
}
}
return
}
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