Merge pull request #2779 from pickfire/patch-1

Centril · web-flow · commit 2b0c911d55cf · 2019-10-06T22:48:10.000+02:00
Add simpler method to proposed example
diff --git a/text/2523-cfg-path-version.md b/text/2523-cfg-path-version.md
@@ -91,6 +91,13 @@ fn make_iter(limit: u8) -> impl Iterator<Item = u8> {
     (0..limit).map(move |x| (x..limit)).flatten()
 }
 
+// Even better
+fn make_iter(limit: u8) -> impl Iterator<Item = u8> {
+    #[cfg(not(accessible(::std::iter::Flatten)))]
+    use itertools::Itertools;
+    (0..limit).map(move |x| (x..limit)).flatten()
+}
+
 fn main() {
     println!("{:?}", make_iter(10).collect::<Vec<_>>());
 }

Original file line number	Diff line number	Diff line change
`@@ -91,6 +91,13 @@ fn make_iter(limit: u8) -> impl Iterator<Item = u8> {`
`91`	`91`	`(0..limit).map(move \|x\| (x..limit)).flatten()`
`92`	`92`	`}`
`93`	`93`
	`94`	`+// Even better`
	`95`	`+fn make_iter(limit: u8) -> impl Iterator<Item = u8> {`
	`96`	`+ #[cfg(not(accessible(::std::iter::Flatten)))]`
	`97`	`+ use itertools::Itertools;`
	`98`	`+ (0..limit).map(move \|x\| (x..limit)).flatten()`
	`99`	`+}`
	`100`	`+`
`94`	`101`	`fn main() {`
`95`	`102`	`println!("{:?}", make_iter(10).collect::<Vec<_>>());`
`96`	`103`	`}`