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QUESTION
I'm having trouble validating my XML up against my RelaxNG-schema. I am a bit new to relaxng, so excuse me if the fault is obvious.
Jing produces three types of errors when validating:
Error 1: "element "article" not allowed here; expected element "chapter""
Error 2: "element "article" not allowed here; expected the element end-tag"
Error 2 "element "chapter" not allowed here; expected the element end-tag"
the XML-file:
...ANSWER
Answered 2017-Nov-25 at 17:30It seems like your XML does not match the schema because:
order of elements is defined as "book", "article", "chapter" - You have unordered elements.
I'm not familiar with RelaxNG-schema but in traditional XSD schema number of element occurrences must be defined (default min=1 max=1). It seems like your schema allows only one book, then one article, then one chapter.
So,
Error 1: "element "article" not allowed here; expected element "chapter""
appears because there is second
expected.
QUESTION
I've stored data sent back by delegate as a user default and I'm trying to prepare it to send in a segue. I am able to send it in a segue, the problem I'm having is the data comes out in the form "optional[Data]"
I know what optional means, but it doesn't let me unwrap UserDefault like an optional, even though it says it is optional?
Here's the code:
...ANSWER
Answered 2017-Jun-30 at 03:49The error message is trying to explain to you that UserDefaults.standard
is not of an Optional
type. That means that it is not of type Optional
, which means it can't use the if-let
statement to unwrap it.
What you want to unwrap is not the UserDefaults
object which is already provided as a singleton through the UserDefaults.standard
property.
What you want to unwrap are the variables you are trying to retrieve.
Those would be the optional types you'll have to deal with. It is Optional
because it may already exist in the UserDefaults
or it may not yet exist.
UserDefaults
?
Using the key DCollect
, use the appropriate method (i.e. stringArray(forKey:)
to retrieve it.
QUESTION
I am working on a download manager and trying to get cookie required contents using HttpWebRequest
. I want to integrate my application to Chrome and so I can get the necessary cookie headers and values from the browser.
But first I need to know if cookie is required to get a content to download and which cookies are they. I can't find any helpful resource about this topic.
...This is what I imagine:
ANSWER
Answered 2017-Feb-14 at 14:22This depends on actual download you want to perform and requirements of the server. Most servers will allow download regardless of cookies.
However, you can always send cookies just in case. What cookies you need? Here are some rules how browsers do it:
Cookie have Domain and Path attributes. Domain applies to subdomains.
So, if request is made for http://foo.bar.com/some/path following cookies will be sent:
-Those with domain com, bar.com and foo.bar.com without path
-Same as previous but having paths like /some or some/path etc.
It will not send cookies from other domains nor from domains listed above but with path not contained in path of request.
So, you would have to search for cookies in same way depending on URL of file you should download.
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