pub fn data_types(
function_name: impl AsRef<str>,
current_types: &[DataType],
signature: &Signature,
) -> Result<Vec<DataType>>Expand description
Performs type coercion for function arguments.
Returns the data types to which each argument must be coerced to
match signature.
For more details on coercion in general, please see the
type_coercion module.