[Codemod][CppQualityCommon] Fix CQS signal performance-faster-string-find in fbcode/pytorch/audio/src/libtorchaudio/sox

facebook-github-bot · web-flow · commit cb90ceaeb1cf · 2025-06-24T21:59:07.000-07:00
Differential Revision: D77129894 Pull Request resolved: #3943
diff --git a/src/libtorchaudio/sox/utils.cpp b/src/libtorchaudio/sox/utils.cpp
@@ -195,7 +195,7 @@ torch::Tensor convert_to_tensor(
 }
 
 const std::string get_filetype(const std::string& path) {
-  std::string ext = path.substr(path.find_last_of(".") + 1);
+  std::string ext = path.substr(path.find_last_of('.') + 1);
   std::transform(ext.begin(), ext.end(), ext.begin(), ::tolower);
   return ext;
 }

Original file line number	Diff line number	Diff line change
`@@ -195,7 +195,7 @@ torch::Tensor convert_to_tensor(`
`195`	`195`	`}`
`196`	`196`
`197`	`197`	`const std::string get_filetype(const std::string& path) {`
`198`		`- std::string ext = path.substr(path.find_last_of(".") + 1);`
	`198`	`+ std::string ext = path.substr(path.find_last_of('.') + 1);`
`199`	`199`	`std::transform(ext.begin(), ext.end(), ext.begin(), ::tolower);`
`200`	`200`	`return ext;`
`201`	`201`	`}`