Crate lexical

Fast lexical conversion routines.

Fast lexical conversion routines for both std and no_std environments. Lexical provides routines to convert numbers to and from decimal strings. Lexical also supports non-base 10 numbers, with the radix feature, for both integers and floats. Lexical is simple to use, and exports up to 10 functions in the high-level API.

Getting Started

extern crate lexical;

// Number to string
lexical::to_string(3.0);            // "3.0", always has a fraction suffix.
lexical::to_string(3);              // "3"

// String to number.
let i: i32 = lexical::parse("3").unwrap();      // 3, auto-type deduction.
let f: f32 = lexical::parse("3.5").unwrap();    // 3.5
let d = lexical::parse::<f64, _>("3.5");        // Ok(3.5), successful parse.
let d = lexical::parse::<f64, _>("3a");         // Err(Error(_)), failed to parse.

Conversion API

To String

• to_string

From String

• parse
• parse_partial
• parse_lossy
• parse_partial_lossy

Configuration Settings

Get Configuration

• get_exponent_default_char
• get_nan_string
• get_inf_string
• get_infinity_string

Set Configuration

• set_exponent_default_char
• set_nan_string
• set_inf_string
• set_infinity_string

Structs

Error

Error type for lexical parsing.

Enums

ErrorCode

Error code, indicating failure type.

Traits

FromLexical	Trait for numerical types that can be parsed from bytes.
FromLexicalLossy	Trait for floating-point types that can be parsed using lossy algorithms from bytes.
ToLexical	Trait for numerical types that can be serialized to bytes.

Functions

get_exponent_default_char	Get default character for the exponent symbol.
get_inf_string	Get the short representation of an Infinity literal as a byte slice.
get_infinity_string	Get the long representation of an Infinity literal as a byte slice.
get_nan_string	Get string representation of Not a Number as a byte slice.
parse	High-level conversion of decimal-encoded bytes to a number.
parse_lossy	High-level lossy conversion of decimal-encoded bytes to a number.
parse_partial	High-level, partial conversion of decimal-encoded bytes to a number.
parse_partial_lossy	High-level, partial, lossy conversion of decimal-encoded bytes to a number.
set_exponent_default_char⚠	Set the default character for the exponent symbol.
set_inf_string⚠	Set the short representation of Infinity from a byte slice.
set_infinity_string⚠	Set the long representation of Infinity from a byte slice.
set_nan_string⚠	Set representation of Not a Number from a byte slice.
to_string	High-level conversion of a number to a decimal-encoded string.

Type Definitions

Result

A specialized Result type for lexical operations.