Improve rust-style identifiers code

There is no reason to heap allocate for each individual character (or each group of characters?) when the allocated collection isn't even going to be used anyway
sei-zan · Mar 14, 2022 · 481cd2d · 481cd2d
1 parent 6892982
commit 481cd2d
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/doc/nom_recipes.md b/doc/nom_recipes.md
@@ -115,7 +115,7 @@ letters and numbers may be parsed like this:
 use nom::{
   IResult,
   branch::alt,
-  multi::many0,
+  multi::many0_count,
   combinator::recognize,
   sequence::pair,
   character::complete::{alpha1, alphanumeric1},
@@ -126,7 +126,7 @@ pub fn identifier(input: &str) -> IResult<&str, &str> {
   recognize(
     pair(
       alt((alpha1, tag("_"))),
-      many0(alt((alphanumeric1, tag("_"))))
+      many0_count(alt((alphanumeric1, tag("_"))))
     )
   )(input)
 }