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Jane Biehl
194 PointsI don't understand the first question.
In an extension to the String type, declare a function named transform. The function should accept as an argument another function of type (String) -> String. For this argument, let's omit the external label. The transform function should also return a String.
1 Answer
Jhoan Arango
14,575 PointsHello,
So we are going to follow the steps one by one as requested in the challenge.
// In an extension to the String type, declare a function named transform.
// The function should accept as an argument another function of type (String) -> String.
// For this argument, let's omit the external label. The transform function should also return a String.
// Extension
extension String {
// Declaring a function named "transform", with an argument that accepts another function.
// Also we omit the external label by using _.
// The transform function has a return type of "String"
// And finally we return the handler with "self".
func transform( _ handler: (String) -> String) -> String {
return handler(self)
}
}
Hope this helps you, if you have any questions please let me know..
Good luck.