[Pitch]Add a Lazy split function for Sequence

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Hi, Swift Community.

I use the Swift programming language, and initially believed that the split function is eager. However, it turns out that it does not.

As shown below, the lazy map is designed.

// a huge collection
let giant = 0..<Int.max
// lazily map it: no work is done yet
let mapped = giant.lazy.map { $0 * 2 }
// sum the first few elements
let sum = mapped.prefix(10).reduce(0, +)
// sum == 90

So, How about this?

// a long sequence
let lazySplited = "0.1.2.3.4.5.6.7.8.9.10.12.13.14.15".lazy.split(separator: ".")

I found inspiration from the following URL.

I always welcome your thoughts, questions, and, feedback.

Thank you for reading!

2

Hi! Here’s one example of an earlier discussion that may interest you:

There are other discussions on the topic that you can also find using the search function on this site.

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