Sample code for 30+ languages & platforms
Swift

SharePoint -- Recycle File (Move File to Recycle Bin)

Moves the file to the Recycle Bin and returns the identifier of the new Recycle Bin item.

Chilkat Swift Downloads

Swift

func chilkatTest() {
    var success: Bool = false

    // This requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    let http = CkoHttp()!

    // If SharePoint Windows classic authentication is used, then set the 
    // Login, Password, LoginDomain, and NtlmAuth properties.
    http.login = "SHAREPOINT_USERNAME"
    http.password = "SHAREPOINT_PASSWORD"
    http.loginDomain = "SHAREPOINT_NTLM_DOMAIN"
    http.ntlmAuth = true

    // The more common case is to use SharePoint Online authentication (via the SPOIDCRL cookie).
    // If so, do not set Login, Password, LoginDomain, and NtlmAuth, and instead
    // establish the cookie as shown at SharePoint Online Authentication

    let req = CkoHttpRequest()!
    req.httpVerb = "POST"
    req.path = "/_api/web/GetFileByServerRelativeUrl('/ChilkatDocLibrary/sample.docx')/recycle"

    // We must add a form digest value in the X-RequestDigest header field.
    // See this example for details on
    // how to get (and cache) a form digest value
    req.addHeader(name: "X-RequestDigest", value: "SHAREPOINT_FORM_DIGEST")

    // Send the request to move the file to the recycle bin.
    var bUseTls: Bool = true
    let resp = CkoHttpResponse()!
    success = http.httpSReq(domain: "SHAREPOINT_HTTPS_DOMAIN", port: 443, ssl: bUseTls, request: req, response: resp)
    if success == false {
        print("\(http.lastErrorText!)")
        return
    }

    let xml = CkoXml()!
    xml.load(xmlData: resp.bodyStr)

    // A successful response will return the 200 status code.
    if resp.statusCode.intValue != 200 {
        print("Response status code = \(resp.statusCode.intValue)")
        print("\(xml.getXml()!)")
        print("Failed")
        return
    }

    // Show the XML response.
    print("\(xml.getXml()!)")

    // The GUID (identifier) of the item in the recycle bin is just the content
    // of the single-node XML that is returned:
    var guid: String? = xml.content
    print("GUID of recycle item = \(guid!)")

    print("Success.")

    // A successful XML response looks like this:

    // <?xml version="1.0" encoding="utf-8" ?>
    // <d:Recycle xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices"
    //  xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata"
    //  xmlns:georss="http://www.georss.org/georss"
    //  xmlns:gml="http://www.opengis.net/gml"
    //  m:type="Edm.Guid">
    //     63b9924d-e9c1-4d7b-b1c2-e921ad85aa1c
    // </d:Recycle>

}