Module parse_float_options

lexical_core

Module parse_float_options 

Source
Available on crate feature parse-floats only.
Expand description

Configuration options for parsing floats.

This enables extensive control over how the float is parsed, from control characters like the decimal point and the valid non-finite float representations.

§Examples

For example, to parse a European-style float:

use lexical_parse_float::{FromLexicalWithOptions, Options};
use lexical_parse_float::format::STANDARD;

const OPTIONS: Options = Options::builder()
    .decimal_point(b',')
    .build_strict();
let value = "1,2345e300";
let result = f64::from_lexical_with_options::<STANDARD>(value.as_bytes(), &OPTIONS);
assert_eq!(result, Ok(1.2345e300));

§Pre-Defined Formats

These are the pre-defined formats for parsing numbers from various programming, markup, and data languages.

Structs§

Options
Options to customize parsing floats.
OptionsBuilder
Builder for Options.

Constants§

CARAT_EXPONENT
Numerical format where ^ is used as the exponent notation character. This isn’t very common, but is useful when e or p are valid digits.
CLOJURE_LITERAL
Number format for a Clojure literal floating-point number.
CLOJURE_STRING
Number format to parse a Clojure float from string.
COBOL_LITERAL
Number format for a COBOL literal floating-point number.
COBOL_STRING
Number format to parse a COBOL float from string.
COFFEESCRIPT_LITERAL
Number format for a Coffeescript literal floating-point number.
COFFEESCRIPT_STRING
Number format to parse a Coffeescript float from string.
CSHARP_LITERAL
Number format for a C# literal floating-point number.
CSHARP_STRING
Number format to parse a C# float from string.
CXX_LITERAL
Number format for a C++ literal floating-point number.
C_LITERAL
Number format for a C literal floating-point number.
DECIMAL_COMMA
Numerical format with a decimal comma. This is the standard numerical format for most of the world.
D_LITERAL
Number format for a D literal floating-point number.
ELIXIR_LITERAL
Number format for an Elixir literal floating-point number.
ELIXIR_STRING
Number format to parse an Elixir float from string.
ELM_LITERAL
Number format for an Elm literal floating-point number.
ELM_STRING
Number format to parse an Elm float from string.
ERLANG_LITERAL
Number format for an Erlang literal floating-point number.
ERLANG_STRING
Number format to parse an Erlang float from string.
FORTRAN_LITERAL
Number format for a FORTRAN literal floating-point number.
FSHARP_LITERAL
Number format for an F# literal floating-point number.
GAMBITC_LITERAL
Number format for a Gambit-C literal floating-point number.
GAMBITC_STRING
Number format to parse a Gambit-C float from string.
GO_LITERAL
Number format for a Go literal floating-point number.
GUILE_LITERAL
Number format for a Guile literal floating-point number.
GUILE_STRING
Number format to parse a Guile float from string.
HASKELL_LITERAL
Number format for a Haskell literal floating-point number.
HASKELL_STRING
Number format to parse a Haskell float from string.
HEX_FLOAT
Numerical format for hexadecimal floats, which use a p exponent.
JAVASCRIPT_LITERAL
Number format for a Javascript literal floating-point number.
JAVASCRIPT_STRING
Number format to parse a Javascript float from string.
JAVA_LITERAL
Number format for a Java literal floating-point number.
JAVA_STRING
Number format to parse a Java float from string.
JSON
Number format for a JSON literal floating-point number.
JULIA_LITERAL
Number format for a Julia literal floating-point number.
KAWA_LITERAL
Number format for a Kawa literal floating-point number.
KAWA_STRING
Number format to parse a Kawa float from string.
KOTLIN_LITERAL
Number format for a Kotlin literal floating-point number.
KOTLIN_STRING
Number format to parse a Kotlin float from string.
MATLAB_LITERAL
Number format for a MATLAB literal floating-point number.
MAX_SPECIAL_STRING_LENGTH
Maximum length for a special string.
MONGODB
Number format for a MongoDB literal floating-point number.
MYSQL
Number format for a MySQL literal floating-point number.
OBJECTIVEC_LITERAL
Number format for an Objective-C literal floating-point number.
OBJECTIVEC_STRING
Number format to parse an Objective-C float from string.
OCAML_LITERAL
Number format for an OCaml literal floating-point number.
PERL_LITERAL
Number format for a Perl literal floating-point number.
PHP_LITERAL
Number format for a PHP literal floating-point number.
POSTGRESQL
Number format for a PostgreSQL literal floating-point number.
PYTHON_LITERAL
Number format for a Python literal floating-point number.
REASONML_LITERAL
Number format for an ReasonML literal floating-point number.
RUBY_LITERAL
Number format for a Ruby literal floating-point number.
RUBY_STRING
Number format to parse a Ruby float from string. Ruby can write NaN and Infinity as strings, but won’t round-trip them back to floats.
RUST_LITERAL
Number format for a Rust literal floating-point number.
R_LITERAL
Number format for an R literal floating-point number.
SAGE_LITERAL
Number format for a Sage literal floating-point number.
SCALA_LITERAL
Number format for a Scala literal floating-point number.
SCALA_STRING
Number format to parse a Scala float from string.
SQLITE
Number format for a SQLite literal floating-point number.
STANDARD
Standard number format.
SWIFT_LITERAL
Number format for a Swift literal floating-point number.
TOML
Number format for a TOML literal floating-point number.
VB_LITERAL
Number format for a Visual Basic literal floating-point number.
VB_STRING
Number format to parse a Visual Basic float from string.
XML
Number format for an XML literal floating-point number.
YAML
Number format for a YAML literal floating-point number.
ZIG_LITERAL
Number format for a Zig literal floating-point number.