pitrou commented on a change in pull request #9265:
URL: https://github.com/apache/arrow/pull/9265#discussion_r561909698
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File path: cpp/src/arrow/util/io_util.cc
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@@ -1482,31 +1482,51 @@ std::string MakeRandomName(int num_chars) {
} // namespace
Result<std::unique_ptr<TemporaryDir>> TemporaryDir::Make(const std::string&
prefix) {
- std::string suffix = MakeRandomName(8);
+ const int kNumChars = 8;
+
NativePathString base_name;
- ARROW_ASSIGN_OR_RAISE(base_name, StringToNative(prefix + suffix));
+
+ auto MakeBaseName = [&]() {
+ std::string suffix = MakeRandomName(kNumChars);
+ return StringToNative(prefix + suffix);
+ };
+
+ auto TryCreatingDirectory =
Review comment:
`TryCreatingDirectory` mutates the enclosing scope and is therefore
coupled to this function. I can move out `MakeBaseName`, though it doesn't seem
very useful.
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