diff --git a/include/dwarfs/conv.h b/include/dwarfs/conv.h
index 2e74a438..43f428c6 100644
--- a/include/dwarfs/conv.h
+++ b/include/dwarfs/conv.h
@@ -77,7 +77,11 @@ std::optional<T> tryTo(U&& s)
 
 template <typename T, typename U>
 T to(U&& s) {
-  return tryTo<T>(std::forward<U>(s)).value();
+  if constexpr (std::same_as<T, std::decay_t<U>>) {
+    return std::forward<U>(s);
+  } else {
+    return tryTo<T>(std::forward<U>(s)).value();
+  }
 }
 
 } // namespace dwarfs
diff --git a/include/dwarfs/string.h b/include/dwarfs/string.h
index 1ceb7552..9f454634 100644
--- a/include/dwarfs/string.h
+++ b/include/dwarfs/string.h
@@ -21,6 +21,7 @@
 
 #pragma once
 
+#include <concepts>
 #include <iterator>
 #include <type_traits>
 #include <utility>
@@ -30,10 +31,14 @@
 #include <range/v3/view/map.hpp>
 #include <range/v3/view/split.hpp>
 
+#include <dwarfs/conv.h>
+
 namespace dwarfs {
 
 template <typename T, typename Input, typename Delim>
-auto split_view(Input&& input, Delim&& delim) {
+auto split_view(Input&& input, Delim&& delim)
+  requires(std::same_as<T, std::string> || std::same_as<T, std::string_view>)
+{
   return std::forward<Input>(input) |
          ranges::views::split(std::forward<Delim>(delim)) |
          ranges::views::transform([](auto&& rng) {
@@ -41,6 +46,17 @@ auto split_view(Input&& input, Delim&& delim) {
          });
 }
 
+template <typename T, typename Input, typename Delim>
+auto split_view(Input&& input, Delim&& delim)
+  requires std::is_arithmetic_v<T>
+{
+  return std::forward<Input>(input) |
+         ranges::views::split(std::forward<Delim>(delim)) |
+         ranges::views::transform([](auto&& rng) {
+           return to<T>(std::string_view(&*rng.begin(), ranges::distance(rng)));
+         });
+}
+
 template <typename T, typename Delim>
 auto split_view(char const* input, Delim&& delim) {
   return split_view<T>(std::string_view(input), std::forward<Delim>(delim));