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Updated 22 December 2021
As we have checked in our previous blog, we learned about some higher-order functions in swift.
In this blog, we are going to explore more Higher-Order functions in swift.
If you have not read our previous blog, please do check that blog as well from here.
forEach will iterate through all elements in an array. And unlike for in you can’t use a break and continue statement to exit from the closure for forEach.
Output: 1 3 8 5 6
As in our previos blog we have already learned about map, in this blog we will understand the types of map, i.e. compactMap and flatMap
The compactMap(_:) will iterate through all elements in an array and will remove nil values from the input array. It’s basically used when we are working with optionals.
Output: [1, 3, 5, 6]
flatMap converts 2D array to one-dimensional array.
Output: [1, 2, 3, 4, 5, 6, 7, 8, 9]
sort(by:) will sort all elements according to the condition written inside the body of the closure in the same array.
Output: [8, 6, 5, 3 ,1]
sorted(by:) will sort all elements according to the condition written inside the body of the closure and returns a new array.
numbers: [1, 3, 8, 5, 6]
sortedArray: [8, 6, 5, 3 ,1]
For more understanding of higher-order functions please check here.
For more interesting blogs check out here – https://mobikul.com/blog/.
Thanks for reading 🙂
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