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Std.Csv.foldRows

1 declaration

fn

foldRows: Str -> T -> fn(T, Array[Str]) -> T -> Result[T, Std.Csv.CsvReadError]

This is a callable function.

What it does

Combine every row of a comma-separated file into one value, holding one

chunk and one record at a time.

The rows are the ones `parse` gives for the whole text, including a quoted

field that holds a newline. Rows before a failure have already reached

`step`; after it, the rest of the file is read without further work.

Read the signature

  • The text after the name is the type checked by Pudu.
  • Read arrows from left to right: inputs come first, and the final type is returned.
  • Names inside [ ] are type arguments, such as the item type held by a collection.
  • Result makes success and recoverable failure part of the function's type.

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