How to add missing ProcInst to the document? about etree HOT 4 CLOSED

I just added a new element InsertChildAt method, which should make it easier to prepend to an element's children.

See 1d33bca.

Example:

pi := etree.NewProcInst("xml", `version="1.0" encoding="UTF-8"`)
doc.InsertChildAt(0, pi)

from etree.

You can use the InsertChild method and pass the root element's Child[0] as the existing token parameter.

Something like this:

pi := etree.NewProcInst("xml", `version="1.0" encoding="UTF-8"`)
doc.InsertChild(doc.Child[0], pi)

from etree.

Ah, okay, that's the trick. Actually, it wasn't clear what to use as the existing token parameter. It could be helpful to document that as an example. Thanks!

PS: I'm now using this:

switch header := doc.Child[0]; header.(type) {
case *etree.ProcInst:
default:
	pi := etree.NewProcInst("xml", `version="1.0" encoding="UTF-8"`)
	doc.InsertChild(header, pi)
}

from etree.

This is great, thanks.

from etree.