CODEWITHSUNDEEP
iosswiftdictionaryextension-methods
Isuru
Isuru

Reputation: 31323

Could not find member 'init' in a Dictionary extension

I found the following code snippet in this sample project. It takes a [String: AnyObject] dictionary, escapes the spacial characters and creates a parametrized string.

class func escapedParameters(parameters: [String : AnyObject]) -> String {
    var urlVars = [String]()

    for (key, value) in parameters {
        let stringValue = "\(value)"
        let escapedValue = stringValue.stringByAddingPercentEncodingWithAllowedCharacters(NSCharacterSet.URLQueryAllowedCharacterSet())

        urlVars += [key + "=" + "\(escapedValue!)"]
    }
    return (!urlVars.isEmpty ? "?" : "") + join("&", urlVars)
}

The original code is a class function. I wanted to make this an extension method of the Dictionary type.

extension Dictionary {

    func escapedParameters() -> String {
        var urlVars = [String]()

        for (key, value) in self {
            let stringValue = "\(value)"
            let escapedValue = stringValue.stringByAddingPercentEncodingWithAllowedCharacters(.URLQueryAllowedCharacterSet())

            urlVars += [key + "=" + "\(escapedValue!)"]
        }
        return (!urlVars.isEmpty ? "?" : "") + join("&", urlVars)
    }

}

But I get the following error at this line urlVars += [key + "=" + "\(escapedValue!)"].

Could not find member 'init'

I can't figure out why or how to correct this. This issue doesn't occur when it's a class function.

Upvotes: 0

Views: 463

Answers (1)

Leo Dabus
Leo Dabus

Reputation: 236508

Try like this:

urlVars.append("\(key)=\(escapedValue!)")

Upvotes: 1

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