Function extend_valid_utf8

arrow-cast/src/cast/string.rs:341–347

A specified helper to cast from `GenericBinaryArray` to `GenericStringArray` when they have same offset size so re-encoding offset is unnecessary.

(builder: &mut B, iter: I)

/// A specified helper to cast from `GenericBinaryArray` to `GenericStringArray` when they have same
/// offset size so re-encoding offset is unnecessary.
fn extend_valid_utf8<'a, B, I>(builder: &mut B, iter: I)
where
    B: Extend<Option<&'a str>>,
    I: Iterator<Item = Option<&'a [u8]>>,
{
    builder.extend(iter.map(|value| value.and_then(|bytes| std::str::from_utf8(bytes).ok())));
}

pub(crate) fn cast_binary_to_string<O: OffsetSizeTrait>(
    array: &dyn Array,