From a42eb98daba8d96a58b12da08c8ad879da351955 Mon Sep 17 00:00:00 2001
From: Michael Krasnitski <michael.krasnitski@gmail.com>
Date: Thu, 22 Feb 2024 23:24:49 -0500
Subject: Cleaner zero-len condition

---
 rust/src/operand_iter.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'rust/src')

diff --git a/rust/src/operand_iter.rs b/rust/src/operand_iter.rs
index ba2bce7c..eca92cf3 100644
--- a/rust/src/operand_iter.rs
+++ b/rust/src/operand_iter.rs
@@ -13,10 +13,12 @@ pub struct OperandIter<F: ILFunction + RefCountable> {
 
 impl<F: ILFunction + RefCountable> OperandIter<F> {
     pub(crate) fn new(function: &F, idx: usize, number: usize) -> Self {
+        // Zero-length lists immediately finish iteration
+        let next_iter_idx = if number > 0 { Some(idx) } else { None };
         Self {
             function: function.to_owned(),
             remaining: number,
-            next_iter_idx: Some(idx),
+            next_iter_idx,
             current_iter: OperandIterInner::empty(),
         }
     }
@@ -45,8 +47,6 @@ impl<F: ILFunction + RefCountable> Iterator for OperandIter<F> {
         if let Some(item) = self.current_iter.next() {
             self.remaining -= 1;
             Some(item)
-        } else if self.remaining == 0 {
-            None // Only reached if initial length is 0
         } else {
             // Will short-circuit and return `None` once iter is exhausted
             let iter_idx = self.next_iter_idx?;
-- 
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