Add nightly toolchain file, update gitignore and simplify find_index_subvector function. (#38)

silathdiir · web-flow · commit 47277db2d1bd · 2024-01-23T15:23:19.000+01:00
diff --git a/.gitignore b/.gitignore
@@ -1 +1,3 @@
+*.csv
+.DS_Store
 /target
diff --git a/src/.DS_Store b/src/.DS_Store
diff --git a/src/utils.rs b/src/utils.rs
@@ -42,7 +42,7 @@ impl<F: RichField> IntTargetWriter for PartialWitness<F> {
 
 // Returns the index where the subvector starts in v, if any.
 pub(crate) fn find_index_subvector(v: &[u8], sub: &[u8]) -> Option<usize> {
-    (0..(v.len() - sub.len())).find(|&i| &v[i..i + sub.len()] == sub)
+    v.windows(sub.len()).position(|s| s == sub)
 }
 
 /// Compute the keccak256 hash of the given data.
diff --git a/toolchain.toml b/toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "nightly"

Original file line number	Diff line number	Diff line change
`@@ -42,7 +42,7 @@ impl<F: RichField> IntTargetWriter for PartialWitness<F> {`
`42`	`42`
`43`	`43`	`// Returns the index where the subvector starts in v, if any.`
`44`	`44`	`pub(crate) fn find_index_subvector(v: &[u8], sub: &[u8]) -> Option<usize> {`
`45`		`- (0..(v.len() - sub.len())).find(\|&i\| &v[i..i + sub.len()] == sub)`
	`45`	`+ v.windows(sub.len()).position(\|s\| s == sub)`
`46`	`46`	`}`
`47`	`47`
`48`	`48`	`/// Compute the keccak256 hash of the given data.`