I need help understanding instances and assignments.

Hi Alex,

I know what you mean. This was also very confusing for me at first. However, once you get the hang of it, it is very simple.

In this code challenge we have two types of Objects. The Post and the Tag. The Post struct is like the blueprint. It describes what a Post object should look like. An instance is just any particular post. If you think about a blog, it consists of many posts. Each unique post is an instance of the Post struct.

Assignment is when you create a new variable and declare what it is.

Here is some code that explains this.

struct Tag {
    let name: String
}

struct Post {
    let title: String
    let author: String
    let tag: Tag
}
// first instance of Post assigned to a variable called firstPost
let firstPost = Post(title: "Post 1 Title", author: "author name", tag: Tag(name: "random"))

// second instance of Post assigned to a variable called secondPost
let secondPost = Post(title: "Post 2 Title", author: "author name", tag: Tag(name: "super"))

I hope that helps,

Mike

PS: If you found the above helpful, be sure to check out my app which breaks code challenges down and really explains things so you can learn faster.

Code! Learn how to program with Swift

https://itunes.apple.com/app/code!-learn-how-to-program/id1032546737?mt=8

PPS: I could not have developed the above app without going through the awesome resources on Team Treehouse. Stick with it. It is so worth it!

Thank you for the help. I got close to this as I tried more, but this explains why.

Alex

I like the app!