Add a Playground so you can play with Promises interactively#2
Add a Playground so you can play with Promises interactively#2khanlou merged 3 commits intokhanlou:masterfrom kelan:playground
Conversation
Changes to the Promise code: * Add `public` to everything so it's accessible from outside the module. * Add some headerdoc (mostly copy/pasted from http://khanlou.com/2016/08/common-patterns-with-promises/)
|
I've been playing with this project recently in a Playground, and thought it was a good example for including the playground with the project, as I talk about here. |
Also add syntax highlighting to the code blocks, and a link to the A+ spec.
|
|
||
| promisedString("simple example").then { result in | ||
| print("Got result: ", result) | ||
| } |
There was a problem hiding this comment.
i know i haven't published a style guide yet, but i'm not using trailing block syntax for this project. i'll comment each time it needs to be fixed
|
|
||
| Promise<[String]>.all(promises).then { allStrings -> Void in | ||
| print("got em all:", allStrings) | ||
| } |
|
|
||
| Promise<Void>.delay(1.0).then { _ -> Void in | ||
| print("after delay") | ||
| } |
| Promise<String>.race(promises).then { (value) -> Void in | ||
| // If you run this multiple times, you might get a different result each time | ||
| print("got: \(value)") | ||
| } |
| print("succeeded: \(result)") | ||
| }).onFailure { error in | ||
| print("failed \(error)") | ||
| } |
| } | ||
| } | ||
| return promise | ||
| } |
There was a problem hiding this comment.
trailing block syntax, and also you can use the work: initializer instead of dispatch_async
There was a problem hiding this comment.
also you can use the work: initializer
Oh, right, duh.
| print("got result:", result) | ||
| }).onFailure { error in | ||
| print("failed: \(error)") | ||
| } |
| print("succeeded: \(result)") | ||
| }).onFailure { error in | ||
| print("failed \(error)") | ||
| } |
|
|
||
| /// Wait for all the promises you give it to fulfill, and once they have, fulfill itself | ||
| /// with the array of all fulfilled values. | ||
| public static func all<T>(promises: [Promise<T>]) -> Promise<[T]> { |
There was a problem hiding this comment.
are these comments formatted such that they show up when the user option-clicks?
There was a problem hiding this comment.
Yeah, it's standard headerdoc for Swift code, and shows up when you option-click on the symbol in Xcode.
|
Thanks for the feedback! I'll try to work on the style tweaks later tonight. |
|
I think I got 'em all. |
2 participants
Changes to the Promise code:
publicto everything so it's accessible from outside the module.