Range-Over-Func Iterators for People Who Miss LINQ

Tue, 10 Nov 2026 00:00:00 +0000

The most common complaint in the comments on this series, and the first item in what I miss from C#, is LINQ. That post shows this:

var activeUsers = users
 .Where(u => u.IsActive)
 .OrderBy(u => u.Name)
 .Select(u => new { u.Id, u.Name })
 .ToList();

and then the for loop and the sort.Slice call you wrote instead. Go has had range-over-func iterators since 1.23, the standard library has been growing functions that return them in every release since, and Go 1.27 removed the one language restriction that made a fluent chain impossible. So this is the comparison that post hinted I ought to write at some point. I ran every snippet here on 1.27 before writing it up, and where .NET is better, or where I think Go is still missing something, I will point that out.

Iterators on Step Into Dev

Range-Over-Func Iterators for People Who Miss LINQ