polars::prelude

Trait StringMethods

Source 
pub trait StringMethods: AsString {
    // Provided methods
    fn as_time(
        &self,
        fmt: Option<&str>,
        use_cache: bool,
    ) -> Result<Logical<TimeType, Int64Type>, PolarsError> { ... }
    fn as_date_not_exact(
        &self,
        fmt: Option<&str>,
    ) -> Result<Logical<DateType, Int32Type>, PolarsError> { ... }
    fn as_datetime_not_exact(
        &self,
        fmt: Option<&str>,
        tu: TimeUnit,
        tz_aware: bool,
        tz: Option<&PlSmallStr>,
        _ambiguous: &ChunkedArray<StringType>,
    ) -> Result<Logical<DatetimeType, Int64Type>, PolarsError> { ... }
    fn as_date(
        &self,
        fmt: Option<&str>,
        use_cache: bool,
    ) -> Result<Logical<DateType, Int32Type>, PolarsError> { ... }
    fn as_datetime(
        &self,
        fmt: Option<&str>,
        tu: TimeUnit,
        use_cache: bool,
        tz_aware: bool,
        tz: Option<&PlSmallStr>,
        ambiguous: &ChunkedArray<StringType>,
    ) -> Result<Logical<DatetimeType, Int64Type>, PolarsError> { ... }
}
Available on crate feature temporal only.

Provided Methods§

Source

fn as_time( &self, fmt: Option<&str>, use_cache: bool, ) -> Result<Logical<TimeType, Int64Type>, PolarsError>

Available on crate feature dtype-time only.

Parsing string values and return a TimeChunked

Source

fn as_date_not_exact( &self, fmt: Option<&str>, ) -> Result<Logical<DateType, Int32Type>, PolarsError>

Available on crate feature dtype-date only.

Parsing string values and return a DateChunked Different from as_date this function allows matches that not contain the whole string e.g. “foo-2021-01-01-bar” could match “2021-01-01”

Source

fn as_datetime_not_exact( &self, fmt: Option<&str>, tu: TimeUnit, tz_aware: bool, tz: Option<&PlSmallStr>, _ambiguous: &ChunkedArray<StringType>, ) -> Result<Logical<DatetimeType, Int64Type>, PolarsError>

Available on crate feature dtype-datetime only.

Parsing string values and return a DatetimeChunked Different from as_datetime this function allows matches that not contain the whole string e.g. “foo-2021-01-01-bar” could match “2021-01-01”

Source

fn as_date( &self, fmt: Option<&str>, use_cache: bool, ) -> Result<Logical<DateType, Int32Type>, PolarsError>

Available on crate feature dtype-date only.

Parsing string values and return a DateChunked

Source

fn as_datetime( &self, fmt: Option<&str>, tu: TimeUnit, use_cache: bool, tz_aware: bool, tz: Option<&PlSmallStr>, ambiguous: &ChunkedArray<StringType>, ) -> Result<Logical<DatetimeType, Int64Type>, PolarsError>

Available on crate feature dtype-datetime only.

Parsing string values and return a DatetimeChunked.

Implementors§