Add option to not pascal case column names in CsvProvider

[smoothdeveloper]

It seems f919179 changes the property names on CsvProvider types to start with a capitlized first letter.

It seems to break code where the csv file has lowercased names.

Is there an option to change this behaviour when instanciating the provider?

If we insist on normalizing names (JsonProvider does that I think), then snake_case should turn into SnakeCase, right now it does look odd with Snake_case.

I think the best is to keep the column names as they are in the source file.

[smoothdeveloper]

@ovatsus / @tpetricek would you take a PR to handle different conventions:

type NamingConvention =
| Untouched = 0
| SanitizeAndTitleCase = 1
| CapitalizeFirstCharacter = 2

or could you devise the API you'd see a PR?

[github-actions]

🤖 This is an automated response from Repo Assist.

Good news — this feature has since been added to CsvProvider! You can use the UseOriginalNames static parameter to preserve column header names exactly as they appear in the CSV file, without any capitalisation or normalisation:

type MyCsv = CsvProvider<"data.csv", UseOriginalNames=true>

With UseOriginalNames=true, a column named snake_case will produce a property snake_case rather than Snake_case or SnakeCase.

This parameter was added in recent versions of FSharp.Data. If you're on an older version, upgrading to 7.x should give you access to it. The issue can likely be closed now.

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