Struct App 

pub struct App { /* private fields */ }

Command-line application parser

Stack-allocated structure that defines the command-line interface schema. All fields use heap-allocated collections for dynamic argument counts, but the parser itself is deterministic and type-safe.

Implementations

impl App

pub fn new(name: impl Into<String>) -> Self

pub fn version(self, version: impl Into<String>) -> Self

pub fn about(self, about: impl Into<String>) -> Self

pub fn author(self, author: impl Into<String>) -> Self

pub fn command(self, cmd: Command) -> Self

pub fn arg(self, arg: Arg) -> Self

pub fn group(self, group: ArgGroup) -> Self

pub fn colored_help(self, colored: bool) -> Self

pub fn config_file(self, path: impl Into<String>) -> Self

Enable config file parsing (TOML-like format)

pub fn env_prefix(self, prefix: impl Into<String>) -> Self

Set environment variable prefix for fallback Example: prefix “MYAPP” allows MYAPP_PORT=8080

pub fn generate_completion(&self, shell: Shell) -> String

Generate shell completion script

pub fn parse(self) -> Matches