use std::iter::{empty};

fn simple_sieve(limit: usize) -> Box<dyn Iterator<Item = usize>> {
   if limit < 2 { return Box::new(empty()) }

   let mut is_prime = vec![true; limit+1];
   is_prime[0] = false;
   if limit >= 1 { is_prime[1] = false }
   let sqrtlmt = (limit as f64).sqrt() as usize + 1;

   for num in 2..sqrtlmt {
       if is_prime[num] {
           let mut multiple = num * num;
           while multiple <= limit {
               is_prime[multiple] = false;
               multiple += num;
           }
       }
   }

   Box::new(is_prime.into_iter().enumerate()
               .filter_map(|(p, is_prm)| if is_prm { Some(p) } else { None }))

}

pub fn test() -> Box<dyn Iterator<Item = usize>> {
   simple_sieve(100)
}

WebAssembly meetings (VC or in-person), agendas, and notes - WebAssembly/meetings

Hi, everybody!  I just wanted to clarify the current situation of supporting WebAssembly in Kotlin.  We are working on a dedicated Kotlin to WebAssembly compiler backend.  So all works on wasm support in Kotlin/Native (through LLVM) were suspended.  For the new compiler backend, we have set the following goals:    produce small binaries – to achieve it we decided don’t use own memory manager and use builtin one instead (see GC proposal);  fast compilation while developing – for that, we are goin...