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Antoine Pitrou commented on ARROW-6299: --------------------------------------- You can have factory functions returning global singletons (like we have for non-parametric types) and still keep the classes. > [C++] Simplify FileFormat classes to singletons > ----------------------------------------------- > > Key: ARROW-6299 > URL: https://issues.apache.org/jira/browse/ARROW-6299 > Project: Apache Arrow > Issue Type: Improvement > Components: C++ > Reporter: Benjamin Kietzman > Assignee: Benjamin Kietzman > Priority: Minor > Labels: dataset > Fix For: 1.0.0 > > > ParquetFileFormat has no state, so passing it around by > shared_ptr<FileFormat> is not necessary; we could just keep a single static > instance and pass raw pointers. > [~wesmckinn] is there a case where a FileFormat might have state? -- This message was sent by Atlassian Jira (v8.3.2#803003)