Optimise dict.is_empty

lpil · lpil · commit 791405107ea4 · 2025-02-17T13:33:55.000Z
Closes #808
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## Unreleased
+
+- The performance of `dict.is_empty` has been improved.
+
 ## v0.54.0 - 2025-02-04
 
 - The `uri` module gains the `empty` value, representing an empty URI which
diff --git a/src/gleam/dict.gleam b/src/gleam/dict.gleam
@@ -50,7 +50,7 @@ pub fn size(dict: Dict(k, v)) -> Int
 /// ```
 ///
 pub fn is_empty(dict: Dict(k, v)) -> Bool {
-  dict == new()
+  size(dict) == 0
 }
 
 /// Converts the dict to a list of 2-element tuples `#(key, value)`, one for

Original file line number	Diff line number	Diff line change
`@@ -50,7 +50,7 @@ pub fn size(dict: Dict(k, v)) -> Int`
`50`	`50`	/// ```
`51`	`51`	`///`
`52`	`52`	`pub fn is_empty(dict: Dict(k, v)) -> Bool {`
`53`		`- dict == new()`
	`53`	`+ size(dict) == 0`
`54`	`54`	`}`
`55`	`55`
`56`	`56`	/// Converts the dict to a list of 2-element tuples `#(key, value)`, one for