Crystal questions

• Understanding multiple mentions of delegate protocol in sample code
• -> Arrow operator with Arrays?
• The property 'someProp' does not exist on value of type 'object' in Typescript
• Checking ignore() for values
• Understanding subcommands with go-flags
• cannot add parentContext to NSManagedObjectContext, context already has a coordinator
• show activity indicator while loading ViewController
• Pointer / Array syntax (char **p, *p[n]) in C/C++
• warn uninstall not installed for npm
• Animating all UICollectionViewCells in a UICollectionView

Crystal answers