Struct itertools::structs::FormatWith

pub struct FormatWith<'a, I, F> {
    sep: &'a str,
    inner: Cell<Option<(I, F)>>,
}

Format all iterator elements lazily, separated by sep.

The format value can only be formatted once, after that the iterator is exhausted.

See .format_with() for more information.

Fields

sep: &'a str

inner: Cell<Option<(I, F)>>

FormatWith uses interior mutability because Display::fmt takes &self.

Trait Implementations

impl<'a, I, F> Clone for FormatWith<'a, I, F>where (I, F): Clone,

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, I, F> Display for FormatWith<'a, I, F>where I: Iterator, F: FnMut(I::Item, &mut dyn FnMut(&dyn Display) -> Result) -> Result,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.