Trait argp::FromArgValue

pub trait FromArgValue: Sized {
    // Required method
    fn from_arg_value(value: &OsStr) -> Result<Self, String>;
}

Types which can be constructed from a single command-line value.

Any field type declared in a struct that derives FromArgs must implement this trait. Argp implements it for:

• all built-in number types
• bool
• char
• String
• std::ffi::OsString
• std::path::PathBuf
• std::net::IpAddr and its variants
• std::net::SocketAddr and its variants

Custom types should implement this trait directly.

Required Methods

fn from_arg_value(value: &OsStr) -> Result<Self, String>

Construct the type from a command-line value, returning an error string on failure.

Implementations on Foreign Types

impl FromArgValue for i32

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for SocketAddrV4

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for i16

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for u16

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for Ipv6Addr

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for u32

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for f64

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for SocketAddr

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for i128

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for char

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for PathBuf

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for u8

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for u128

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for Ipv4Addr

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for IpAddr

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for OsString

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for bool

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for String

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for u64

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for isize

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for i64

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for SocketAddrV6

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for f32

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for i8

fn from_arg_value(value: &OsStr) -> Result<Self, String>

impl FromArgValue for usize

fn from_arg_value(value: &OsStr) -> Result<Self, String>

Implementors