Trait polars_core::frame::select::Selection

pub trait Selection<'a, S> {
    fn to_selection_vec(self) -> Vec<&'a str>;

    fn single(&self) -> Option<&str> { ... }
}

Allow selection by:

&str => df.select(“my-column”), (&str)“ => df.select((“col_1”, “col_2”)), Vec<&str)“ => df.select([“col_a”, “col_b”]),

Required methods

fn to_selection_vec(self) -> Vec<&'a str>

Provided methods

fn single(&self) -> Option<&str>

Implementations on Foreign Types

impl<'a> Selection<'a, &'_ str> for &'a str

fn to_selection_vec(self) -> Vec<&'a str>

fn single(&self) -> Option<&'a str>

impl<'a> Selection<'a, &'_ str> for Vec<&'a str>

fn to_selection_vec(self) -> Vec<&'a str>

impl<'a, T, S: 'a> Selection<'a, S> for &'a T where
    T: AsRef<[S]>,
    S: AsRefPolars<str>, 

fn to_selection_vec(self) -> Vec<&'a str>

fn single(&self) -> Option<&str>

impl<'a> Selection<'a, &'_ str> for (&'a str, &'a str)

fn to_selection_vec(self) -> Vec<&'a str>

impl<'a> Selection<'a, &'_ str> for (&'a str, &'a str, &'a str)

fn to_selection_vec(self) -> Vec<&'a str>

impl<'a> Selection<'a, &'_ str> for (&'a str, &'a str, &'a str, &'a str)

fn to_selection_vec(self) -> Vec<&'a str>

impl<'a> Selection<'a, &'_ str> for (&'a str, &'a str, &'a str, &'a str, &'a str)

fn to_selection_vec(self) -> Vec<&'a str>

impl<'a> Selection<'a, &'_ str> for (&'a str, &'a str, &'a str, &'a str, &'a str, &'a str)

fn to_selection_vec(self) -> Vec<&'a str>

Implementors