From 7b8322b6e131b7edaa1bade7b37cdd49017c1cb8 Mon Sep 17 00:00:00 2001
From: Stephen Chung <schungx@live.com>
Date: Thu, 18 Feb 2021 23:35:22 +0800
Subject: [PATCH] Scope implements IntoIterator.

---
 RELEASES.md  |  4 +++-
 src/scope.rs | 14 ++++++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/RELEASES.md b/RELEASES.md
index a3ee4317..bd1b91fb 100644
--- a/RELEASES.md
+++ b/RELEASES.md
@@ -12,8 +12,10 @@ Bug fixes
 Enhancements
 ------------
 
+* Comparisons between `FLOAT`/[`Decimal`](https://crates.io/crates/rust_decimal) and `INT` are now built in.
 * Error position in `eval` statements is now wrapped in an `EvalAltResult::ErrorInFunctionCall`.
 * `Position` now implements `Add` and `AddAssign`.
+* `Scope` now implements `IntoIterator`.
 
 
 Version 0.19.12
@@ -54,7 +56,7 @@ Enhancements
 
 * Functions resolution cache is used in more cases, making repeated function calls faster.
 * Added `atan(x, y)` and `hypot(x, y)` to `BasicMathPackage`.
-* Added standard arithmetic operators between `FLOAT` and `INT`.
+* Added standard arithmetic operators between `FLOAT`/[`Decimal`](https://crates.io/crates/rust_decimal) and `INT`.
 
 
 Version 0.19.11
diff --git a/src/scope.rs b/src/scope.rs
index 77c74e9e..4adda3e1 100644
--- a/src/scope.rs
+++ b/src/scope.rs
@@ -64,6 +64,20 @@ impl Default for Scope<'_> {
     }
 }
 
+impl<'a> IntoIterator for Scope<'a> {
+    type Item = (Cow<'a, str>, Dynamic);
+    type IntoIter = Box<dyn Iterator<Item = Self::Item> + 'a>;
+
+    fn into_iter(self) -> Self::IntoIter {
+        Box::new(
+            self.values
+                .into_iter()
+                .zip(self.names.into_iter())
+                .map(|(value, (name, _))| (name, value)),
+        )
+    }
+}
+
 impl<'a> Scope<'a> {
     /// Create a new [`Scope`].
     ///