Dutch FP Day 2015

Transcript

1. Functional Programming in Swift @chriseidhof
2. First, a story...
6. Real World Wide Web Haskell Chris Eidhof Eelco Lempsink FP Dag, January 9th, 2009
   
   UVQJM
9. - (NSDictionary*)parseResponse:(NSData*) data { NSString *dataString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; NSObject *json = [dataString JSONValue]; [dataString release]; if (json == nil || ![json isKindOfClass:[NSDictionary self]]) { return nil; } return (NSDictionary *)json; }
10. + (BOOL)isHostReachable:(NSString *)host { if (!host || ![host length]) { return NO; } SCNetworkReachabilityFlags flags; SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(NULL, [host UTF8String]); BOOL gotFlags = SCNetworkReachabilityGetFlags(reachability, &flags); CFRelease(reachability); if (!gotFlags) { return NO;
11. OOP
12. Writing my own language
15. This changes everything...
16. Much convincing to do...
17. Awesome responses...
18. Very interesting times
20. Everybody in our community is at least looking at Haskell. Many are learning.
21. How we wrote the book
22. » Literate Swift » Playgrounds (= awesome!)
24. Demo
25. Challenges
26. We know it's awesome, but saying so directly will turn people away
27. Swift still lacks a lot: stability, tooling, constraints at the type-level, compiler bugs
28. What terminology do we use?
29. “We don't need all this new stuff, generics are awful”
30. Thanks
31. Credits Utrecht photo: https://www.flickr.com/photos/ lambertwm/