Trait FormatterToString 

pub trait FormatterToString {
    // Required method
    fn to_string<T: Display>(&self, value: T) -> String;

    // Provided methods
    fn to_string_opt<T: Display>(&self, value: Option<T>) -> String { ... }
    fn to_multiline_string<'a, T, I>(&self, items: I) -> String
       where T: Display + 'a,
             I: IntoIterator<Item = T> { ... }
    fn to_multiline_indexed_string<'a, T, I>(&self, items: I) -> String
       where T: Display + 'a,
             I: IntoIterator<Item = T> { ... }
    fn to_table_string<T: Display>(&self, items: &[T]) -> String { ... }
    fn to_table_string_custom<T: Display, I: IntoIterator<Item = T>>(
        &self,
        items: I,
        columns: usize,
        indent: usize,
        brackets: bool,
        newlines: bool,
    ) -> String { ... }
}

Format fmt::Display values to String, respecting a formatter-style alternate flag.

Implemented for fmt::Formatter (uses fmt::Formatter::alternate), DefaultDisplayFormat ({} only), and AlternateDisplayFormat ({:#} only). List helpers match the behavior of the former ToMultilineString / ToTableString traits from veilid-core.

Required Methods

fn to_string<T: Display>(&self, value: T) -> String

Format values to String, respecting a formatter-style alternate flag.

Provided Methods

fn to_string_opt<T: Display>(&self, value: Option<T>) -> String

Format Option<> values to String, using FormatterToString::to_string for the inner value.

fn to_multiline_string<'a, T, I>(&self, items: I) -> String

where T: Display + 'a, I: IntoIterator<Item = T>,

One line per item, each formatted via FormatterToString::to_string.

fn to_multiline_indexed_string<'a, T, I>(&self, items: I) -> String

where T: Display + 'a, I: IntoIterator<Item = T>,

Like FormatterToString::to_multiline_string, but each item is prefixed with its index and indented (four spaces per line of the item’s string form).

fn to_table_string<T: Display>(&self, items: &[T]) -> String

Format items as a bracketed table with default layout (32 columns, 4-space indent).

fn to_table_string_custom<T: Display, I: IntoIterator<Item = T>>( &self, items: I, columns: usize, indent: usize, brackets: bool, newlines: bool, ) -> String

Format items as a comma-separated table. columns items per row (0 disables wrapping), each row indented by indent spaces, optionally wrapped in [] and split across lines.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl FormatterToString for Formatter<'_>

fn to_string<T: Display>(&self, value: T) -> String

Implementors

impl FormatterToString for AlternateDisplayFormat

impl FormatterToString for DefaultDisplayFormat