alamb commented on a change in pull request #8714:
URL: https://github.com/apache/arrow/pull/8714#discussion_r528201750
##########
File path: rust/arrow/src/csv/reader.rs
##########
@@ -446,8 +446,57 @@ fn parse(
arrays.and_then(|arr| RecordBatch::try_new(projected_schema, arr))
}
+trait Parser: ArrowPrimitiveType {
+ fn parse(string: &str) -> Option<Self::Native> {
+ string.parse::<Self::Native>().ok()
+ }
+}
+
+impl Parser for BooleanType {
+ fn parse(string: &str) -> Option<bool> {
+ if string.eq_ignore_ascii_case("false") {
+ return Some(false);
+ }
+ if string.eq_ignore_ascii_case("true") {
+ return Some(true);
+ }
+ None
+ }
+}
+
+impl Parser for Float32Type {
+ fn parse(string: &str) -> Option<f32> {
+ lexical_core::parse(string.as_bytes()).ok()
+ }
+}
+impl Parser for Float64Type {
+ fn parse(string: &str) -> Option<f64> {
+ lexical_core::parse(string.as_bytes()).ok()
+ }
+}
+
+impl Parser for UInt64Type {}
Review comment:
yeah, I agree there is no reason to special case other types at this time
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