Created
April 23, 2018 20:52
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reading a huge xml as a sequence of XElement
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#r "System.Xml.Linq" | |
open System.Xml | |
open System.Xml.Linq | |
let elements ns name uri = | |
seq { | |
use reader = XmlReader.Create(inputUri = uri) | |
let onElement() = reader.LocalName = name && reader.NamespaceURI = ns | |
while onElement() || reader.ReadToFollowing(name, ns) do | |
yield XNode.ReadFrom(reader) :?> XElement } | |
let hugeFileUri, numberOfElements = "hugeFileUri.xml", 100 | |
let ns, name = "tempuri.org", "item" | |
XElement(XName.Get("root", ns), | |
[| 1..numberOfElements |] | |
|> Array.map (fun i -> XElement( | |
XName.Get(name, ns), | |
XAttribute(XName.Get "id", i)))) | |
.Save(hugeFileUri) | |
for e in elements ns name hugeFileUri do | |
printfn "%O" e |
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