Re: [swift-evolution] [Pitch] Replace the ternary operator with an in-language function
> > Pitch: I'd like to simplify the syntax, compiler complexity and learning > curve for newcomers when it comes to dealing with the ternary function. The > best way to do that, in my opinion, is to remove it entirely and add a new > function with better semantics that takes care of ternary operations > entirely within the Swift language. > -1 A lot of things can and will be confusing for newcomers, that's not the reason to remove them. Being a newbie is a transitional state. OTOH, I've never got why ternary is considered especially confusing, for me it never was a problem and I love the terseness of it. Only total novices in programming may be surprised by it, but they will be suprised by a lot of things anyway, so ternary is the least of their problems. Those with experiene in other languages will be most likely already familiar with the operator. Also, many come to Swift from Objective C, which not only has ternary, but also supports a variant where you can use it kind of like ?? in Swift: NSString *other = someString ?: @"default string". Removing ?: gains nothing and loses a lot, I'd say. Best regards, Rimantas ___ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
Re: [swift-evolution] Extend FloatingPoint with tau!
> Lots of win for very small effort. > "Lots" like in not having to type "2 *"? -1 from me. Best regards, Rimantas ___ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
Re: [swift-evolution] the "guard" keyword, again
> In summary, “require … else” is a very clean choice and beats “guard ... > else” handily. > For you maybe. I prefer quard—it carries slightly different semantic load and fits more cases, imho. r. ___ swift-evolution mailing list swift-evolution@swift.org https://lists.swift.org/mailman/listinfo/swift-evolution
Re: [swift-evolution] extend trailing closure rule
>
> That's ugly. I'd rather write:
>
> UIView.animate(withDuration:0.4) {
> self.v.backgroundColor = UIColor.red()
> }
>
> What stops me is that `animations:` is not eligible for trailing closure
> syntax, because it isn't the last parameter — `completion:` is.
Actually you can. UIView has three signatures ‘animateWithduration’:
class func animateWithDuration(_ duration: NSTimeInterval
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_DataTypes/index.html#//apple_ref/swift/tdef/c:@T@NSTimeInterval),
animations animations: () -> Void
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Swift/Reference/Swift_StandardLibrary_TypeAliases/index.html#//apple_ref/swift/tdef/s:s4Void))
class func animateWithDuration(_ duration: NSTimeInterval
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_DataTypes/index.html#//apple_ref/swift/tdef/c:@T@NSTimeInterval),
animations animations: () -> Void
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Swift/Reference/Swift_StandardLibrary_TypeAliases/index.html#//apple_ref/swift/tdef/s:s4Void),
completion completion: ((Bool
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Swift/Reference/Swift_Bool_Structure/index.html#//apple_ref/swift/struct/s:Sb))
-> Void
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Swift/Reference/Swift_StandardLibrary_TypeAliases/index.html#//apple_ref/swift/tdef/s:s4Void))?)
class func animateWithDuration(_ duration: NSTimeInterval
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_DataTypes/index.html#//apple_ref/swift/tdef/c:@T@NSTimeInterval),
delay delay: NSTimeInterval
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Cocoa/Reference/Foundation/Miscellaneous/Foundation_DataTypes/index.html#//apple_ref/swift/tdef/c:@T@NSTimeInterval),
options options: UIViewAnimationOptions
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/UIKit/Reference/UIView_Class/index.html#//apple_ref/swift/struct/c:@E@UIViewAnimationOptions),
animations animations: () -> Void
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Swift/Reference/Swift_StandardLibrary_TypeAliases/index.html#//apple_ref/swift/tdef/s:s4Void),
completion completion: ((Bool
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Swift/Reference/Swift_Bool_Structure/index.html#//apple_ref/swift/struct/s:Sb))
-> Void
(file:///Users/rimliu/Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.iOS.docset/Contents/Resources/Documents/documentation/Swift/Reference/Swift_StandardLibrary_TypeAliases/index.html#//apple_ref/swift/tdef/s:s4Void))?)
so your version is valid.
Best regards,
Rimantas
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