Swift - Type Has No Member

Swift 5 Value of type has no member

If you define a type’s access level as internal or public (or use the
default access level of internal without specifying an access level
explicitly), the default access level of the type’s members will be
internal.

https://docs.swift.org/swift-book/LanguageGuide/AccessControl.html

I hate that, and wish it worked like you were thinking it would. The big problem with it is inconsistency: public will cascade down, but only in a public extension. As such, I recommend using extensions for access grouping. You can't do that with stored properties, though.

Value of type ... has no member

You need to move the declaration of result

var result: Double { 
    get {
        return 0.0 
    }
}

here, to inside of the class:

class calculatorBrain {

    var result: Double { 
        get {
            return 0.0 
        }
    }

...

}

Since you are defining result outside of the CalculatorBrain class so you get the error:

Value of type 'CalculatorBrain' has no value 'result'

swift error: Value of type _ has no member _

You are trying to assign the subscript values from an array object without specifying the index.

Try this:

class ViewController: UIViewController {
@IBOutlet weak var prizeLabel: UILabel!
@IBOutlet weak var priceLabel: UILabel!
@IBOutlet weak var timeLabel: UILabel!
@IBOutlet weak var categoryLabel: UILabel!
@IBOutlet weak var ContentLabel: UILabel!
@IBOutlet weak var TopicLabel: UILabel!

override func viewDidLoad() {
    super.viewDidLoad()
    
    if let url = URL(string: "http://{Local-Host}/post") {
        URLSession.shared.dataTask(with: url) { data, response, error in
            if let data = data {
                do {
                    let parsedJSON = try JSONDecoder().decode(parsingss.self, from: data)
                    
                    print(parsedJSON)
                    
                    DispatchQueue.main.async {
                        self.TopicLabel.text = parsedJSON.scrims[0].topic
                        self.ContentLabel.text = parsedJSON.scrims[0].content
                        self.categoryLabel.text = parsedJSON.scrims[0].category
                        self.timeLabel.text = parsedJSON.scrims[0].time
                        self.priceLabel.text = parsedJSON.scrims[0].price
                        self.prizeLabel.text = parsedJSON.scrims[0].prize
                    }
                }
                catch {
                    print(error)
                    
                }
            }
        }.resume()
    }
}

}

Type has no member

your property image access the block property before they are both initilized, to fix your problem your variable "image" should be flagged as lazy variable, meaning it will be initilized after the other properties have been initilized hence it is safe to access those other properties.

More about lazy properties

The official Swift documentation says,

"Lazy properties are useful when the initial value for a property is dependent on outside factors whose values are not known until after an instance’s initialization is complete."

You can read more about lazy properties here: - Swift Properties Official documentation

Here is how to do it: -

  lazy var image: Image = {
    return Image(blocksArray: blocks, code: codes, color: colors)
}()

for the case of colors part, I think it is a good practice to avoid typing strings when initializing especially for simple colors like yours and use the enum versions.
Change it to this : -

var colors = [UIColor.red]

or this: -

var colors: [UIColor] = [.red]

Value of type User has no member 'logStatus Swift Error

You should take logStatus() out of your initializer

struct SomeStruct {
    let name: String
    var email: String
    var followers: Int
    var isActive: Bool
    
    init(name: String, email: String, followers: Int, isActive:Bool) {
        self.name = name
        self.email = email
        self.followers = followers
        self.isActive = isActive
    }

    func logStatus() {
        if (isActive) {
           print("\(name) is working hard" ) 
        } else {
           print("\(name) has left Earth")
        }
     }
}

Type X has no member of Y

As Frankenstein mentioned, you're calling a function on the Type itself, not an instance of the type. In other words, you're not calling any sort of variable or constant instance, you're calling the Type definition (the blueprint) itself. And that's not allowed unless you explicitly state it in the type.

Sometimes you want this, but then you have to make the fetchPosts function in the Post type static. Like:

struct Post { // or maybe your Post type is a class, so it would be class Post {
    ...
    static func fetchPosts() { ... }
    ...
}

But I'm guessing you don't actually want to run a static function on the Type itself, because it would have no access to any of the properties of any Post struct/class that you created and populated with settings/data in the properties.

It's hard to tell how to help without seeing exactly what's going with your Post type.

But I'd guess you actually want to create an instance of Post first. Something like:

func fetchPosts()
{
    //this could be from Firebase, Amazon, whatever

    var postInstance = Post() // This creates a new Post instance for you to work with
    self.posts = postInstance.fetchPosts() // This calls your new Post instance's fetchPost() method
    self.tableView.reloadData()
}

That will make your error go away, but I'm not sure you want to run fetchPosts on a brand new instance of Post. Did you already have a Post instance somewhere that needs to be accessed in this scope?

And is it just a coincidence that you have a fetchPosts() method in both your Post class/struct AND in your UIFeedViewControllerTableViewController class?

Swift 3 Value of type 'Any?' has no member 'object'

Unlike Swift 2, Swift 3 imports Objective-C's id as Any? instead of AnyObject? (see this Swift evolution proposal). To fix your error, you need to cast all of your variables to AnyObject. This may look something like the following:

jsonmanager.post("http://myapi.com", parameters: nil) { (operation: AFHTTPRequestOperation?, responseObject: Any?) in
    let response = responseObject as AnyObject?
    let meta = response?.object(forKey: "meta") as AnyObject?
    let status = meta?.object(forKey: "status") as AnyObject?
    let totalData = response?.object(forKey: "total_data") as AnyObject?
    if status?.intValue == 200 && totalData?.intValue != 0 {
        let aa = response?.object(forKey: "response") as AnyObject?
        self.data = aa?.mutableCopy() 
    }
}

Value of type 'Tags' has no member 'lastUsed'

The problem is that the declarations of name and lastUsed have an invisible character (U+200B = "ZERO WIDTH SPACE") as the last character of the identifier.

Here is a short example demonstrating what seems to be a paradox. The first print statement does not compile, but the last one does:

struct Tags {
    let name​ = "name"
}

print(Tags().name) // (1) Error: Value of type 'Foo' has no member 'name'
print(Tags().name​) // (2) No error

Unfortunately, Xcode does not display this character, even if “Editor->Invisibles” is switched on. Opening the file in vi shows the issue:

struct Tags {
    let name<200b> = "name"
}

print(Tags().name) // (1) Error: Value of type 'Foo' has no member 'name'
print(Tags().name<200b>) // (2) No error

Note that invisible characters are allowed in identifier names, this has been discussed in the Swift forum.

The first print statement was created with Xcode's code completion and Xcode omits the trailing invisible character. I would consider that a bug.

The second print statement was created by carefully copying the name​ identifier including the trailing invisible character.

Summary: Swift identifiers can contain invisible characters, but those do not work well with Xcode's code completion and cause only confusion. Rewriting all occurrences of those identifiers fixes the issue.

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