Uncaught Error: Unsupported operation: StdIOUtils._getStdioOutputStream

dartpad is an online editor or compiler which does not support dart:io or any other libraries by dart.

In simple, to use stdin or stdout use vscode or any editor with SDK.
Since, dart pad does not support this package/library.

sorry for any mistake, I am still a newbie and I found this info. on stackoverflow.

Are there any code examples left?
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