Sherin Jacob

The `parseRE(code: string): astAndComments` throws an error when the code contains one or more line comments. The usage of the JS API is documented [here](https://github.com/facebook/reason/blob/master/USING_PARSER_PROGRAMMATICALLY.md). ```javascript const refmt = require('reason');...

Toplevel expression is expected to have unit type

2

You encounter this error (in chapter 2) before the unit type is introduced. Introduce the underscore binding to which you can assign values, you do not care about. This will...

This is an error you run into when working through the tutorial. The `unit` type is not introduced in the beginning with other primitive types. So when this error happens...

* You have to always provide the else branch * Unless you are returning `unit` type * Rationale for why this restriction is necessary for writing robust production code *...

Convert `BuiltInWindowFunction::CumeDist` to a user defined window function

3

### Is your feature request related to a problem or challenge? Part of https://github.com/apache/datafusion/issues/8709 There is now no difference between "built in" / "prepackaged" scalar and aggregate functions in DataFusion,...