CsvProvider a way to not pass all other columns to transform a row

[zetashift]

So one can transform a row using Map: http://fsprojects.github.io/FSharp.Data/library/CsvProvider.html#Transforming-CSV-files

But using that method you'd also have to explicitly pass long all other row values, in the correct order.
Could a helper method be provided that returns an updated row value given the column name(s) and value(s), without having to explicitly pass along all row values?

One can currently deal with this by making a record type that models your data and then defining a function that converts a myCsv.Row -> MyRecord, but I think this would make Map a lot more ergonomic.

[dsyme]

This is really a request to generate .WithProp1(4)m .WIthProp2("a") methods on the generated object model. It makes sense and is a good suggestion. Let's do it.

[dsyme]

Let's do it for all the record-like types for all the type providers

[github-actions]

🤖 This is an automated response from Repo Assist.

A draft PR has been opened implementing With(PropName)(newValue) methods for CsvProvider and JsonProvider record types, as endorsed by @dsyme above.

What's implemented:

• CsvProvider Row types gain WithName(v), WithAge(v), etc. — each returns a new Row with one field replaced
• JsonProvider record types gain the same With* methods
• Both maintain immutability (original row/record is unchanged)

Example:

let row = csv.Rows |> Seq.head
let updated = row.WithAge(row.Age + 1)  // new Row, Age incremented

let json = JsonProvider<"""{"name":"Alice","age":30}""">.Parse(input)
let renamed = json.WithName("Bob")

XmlProvider is excluded from this first PR due to its more complex structure (attributes, child elements, text values) and can be a follow-up.

Test status: 265/265 runtime tests pass, including 6 new With* tests. The design-time signature tests have pre-existing infrastructure failures unrelated to this change.

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