Discover how to get started with iOS 10's new property animators.
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/4955-ios-10-property-animators-timing-functions
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/4955-ios-10-property-animators-timing-functions
1 Like
This was a really cool new video format!
Got any favorite resources for building competency with damped harmonic oscillators? You seem to have a good intuition about them built up.
1 Like
Really glad you liked it Jesse - I’ve been working on developing the screencast format that we use, and it’s nice to hear that it is appreciated 
As for harmonic oscillators, I’m not really sure of the best resources. The wikipedia page gives a good overview, but that probably requires a good level of understanding from the outset.
Khan Academy seems to have some good videos about differential equations and harmonic motion that might be worth a watch:
I’ve not watched them, but they certainly seem to give some good context around SHM and oscillations.
sam
1 Like
Hi Sam,
The project crashes for me approximately half the time on the following in the App Delegate:
srand48(Int(arc4random()))
I think I worked out why, arc4random() returns an unsigned int that can’t always be cast to Int on 32bit machines. UInt32 max is > Int.max on iPad Retina as the target simulator for example.
I tested the following solution a few times and problem seems to have gone away.
srand48(Int(arc4random_uniform(UInt32(Int.max))))
Almost a historical issue, but not quite yet
Kind regards
Paul
1 Like
Well spotted @mrpaulb - thanks for that!
I’ll admit that I forgot that 32-bit machines still exist 
sam
More in this video format, please. A much more engaging video, IMO.
Great job, Sam!
1 Like