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iOS Build a Weather App with Swift Managing Complexity Callback Methods With Closures

Julien Frisch
Julien Frisch
4,464 Points

My code is not working but the names are correct and I do not have a compiler error. What is the issue?

cf below my code.

Callbacks.swift
import Foundation

// Add your code belowtypealias BlogPostCompletion = (data: NSData!, httpResponse: NSURLResponse!, error: NSError!) -> Void
typealias BlogPostCompletion = (NSData!,NSURLResponse!,NSError!) -> Void
func fetchTreehouseBlogPosts(BlogPostCompletion){
}

2 Answers

Steven Deutsch
Steven Deutsch
21,046 Points

Hey Julien Frisch,

Try wrapping parentheses around the function signature.

import Foundation

// Add your code below

typealias BlogPostCompletion = ((NSData!, NSURLResponse!, NSError!) -> Void)

func fetchTreehouseBlogPosts(handler: BlogPostCompletion) {

}

Good Luck!

Julien Frisch
Julien Frisch
4,464 Points

Working great, thanks Steven!