No need to fold before reducing

djc · djc · commit 051215921f4b · 2020-06-01T11:52:56.000+02:00
diff --git a/src/lib.rs b/src/lib.rs
@@ -29,7 +29,6 @@ pub fn top_few_from_stream(
             }
             counter
         })
-        .fold(|| Counter::new(None), sum)
         .reduce(|| Counter::new(Some(num)), sum);
 
     Ok(total.top())

Original file line number	Diff line number	Diff line change
`@@ -29,7 +29,6 @@ pub fn top_few_from_stream(`
`29`	`29`	`}`
`30`	`30`	`counter`
`31`	`31`	`})`
`32`		`- .fold(\|\| Counter::new(None), sum)`
`33`	`32`	`.reduce(\|\| Counter::new(Some(num)), sum);`
`34`	`33`
`35`	`34`	`Ok(total.top())`