Pudu programming language
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Std.Db.Repository.optionalText

1 declaration

fn

optionalText: &Std.Db.Driver.Rows -> Int -> Str -> Result[Option[Str], Std.Db.Repository.RowError]

This is a callable function.

What it does

One column of one row as text, which must be there and may hold nothing.

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.
  • & borrows a value for this call instead of moving or copying it.
  • Names inside [ ] are type arguments, such as the item type held by a collection.
  • Option holds Some(value) or None when no value is available.
  • Result makes success and recoverable failure part of the function's type.

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