With two years of working in Go at two companies, I have never had to write that. I can't remember writing the equivalent in Python over even more years, either

With two years of working in Go at two companies, I have never had to write that. I can't remember writing the equivalent in Python over even more years, either. The 99% case is building a list/slice, not removing from one. Have you ever had to remove elements from a list/slice?