The Loop War: Iterators vs. Traditional Loop
summary
Benchmarks claim the classic for/type-switch approach runs about 300× faster on a 1,000 million-item test while iterators from the iter package (Go 1.23) enable lazy evaluation and easy early termination via a sequence signature like func(string) bool (yield returns a bool). Iterators avoid loading whole slices but incur boxing/unboxing and extra allocations (example: a sorting example shows around 57 allocations versus one allocation for the slice sort), so trade performance for memory and control.
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chapters (6)
- 0:00Introduction and career path
- 1:35Focusing on the people in tech
- 4:07Generics versus type switches
- 6:58Iterator-based log processing
- 16:32Sorting performance showdown
- 19:05Conclusion on tool selection
