Struct ShowS 

pub struct ShowS {
    pub label: String,
    pub prefix: String,
}

A difference-string (ShowS) representation: a function String → String encoded as a closure stored with its description.

Fields

label: String

Human-readable label for this ShowS value.

prefix: String

The accumulated prefix string.

Implementations

impl ShowS

pub fn new(label: impl Into<String>, prefix: impl Into<String>) -> Self

Create a new ShowS from a prefix string.

pub fn apply(&self, rest: &str) -> String

Apply this ShowS: prepend the prefix to rest.

pub fn compose(&self, other: &ShowS) -> ShowS

Compose two ShowS values: self then other.

pub fn identity() -> ShowS

The identity ShowS (no prefix).