Struct polars::prelude::LazyCsvReader [−][src]
pub struct LazyCsvReader<'a> { /* fields omitted */ }
Implementations
Try to stop parsing when n
rows are parsed. During multithreaded parsing the upper bound n
cannot
be guaranteed.
Continue with next batch when a ParserError is encountered.
Set the CSV file’s schema
Skip the first n
rows during parsing.
Overwrite the schema with the dtypes in this given Schema. The given schema may be a subset of the total schema.
Set whether the CSV file has headers
Set the CSV file’s column delimiter as a byte character
Cache the DataFrame after reading.
Reduce memory usage in expensive of performance
Trait Implementations
Auto Trait Implementations
impl<'a> RefUnwindSafe for LazyCsvReader<'a>
impl<'a> Send for LazyCsvReader<'a>
impl<'a> Sync for LazyCsvReader<'a>
impl<'a> Unpin for LazyCsvReader<'a>
impl<'a> UnwindSafe for LazyCsvReader<'a>
Blanket Implementations
Mutably borrows from an owned value. Read more
pub fn vzip(self) -> V