Trait FormattedSize 

pub trait FormattedSize {
    const FORMATTED_SIZE: usize;
    const FORMATTED_SIZE_DECIMAL: usize;
}

Available on crate features write-floats or write-integers only.

The size, in bytes, of formatted values.

Required Associated Constants

const FORMATTED_SIZE: usize

Maximum number of bytes required to serialize a number to string. If power-of-two or radix is not enabled, this is the same as FORMATTED_SIZE_DECIMAL.

Note that this value may be insufficient if digit precision control, exponent break points, or disabling exponent notation is used. If you are changing the number significant digits written, the exponent break points, or disabling scientific notation, you will need a larger buffer than the one provided. An upper limit on the buffer size can then be determined using WriteOptions::buffer_size.

Using an insufficiently large buffer will lead to the code panicking.

const FORMATTED_SIZE_DECIMAL: usize

Maximum number of bytes required to serialize a number to a decimal string.

Note that this value may be insufficient if digit precision control, exponent break points, or disabling exponent notation is used. If you are changing the number significant digits written, the exponent break points, or disabling scientific notation, you will need a larger buffer than the one provided. An upper limit on the buffer size can then be determined using WriteOptions::buffer_size.

Using an insufficiently large buffer will lead to the code panicking.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl FormattedSize for f32

const FORMATTED_SIZE: usize = 256usize

const FORMATTED_SIZE_DECIMAL: usize = 64usize

impl FormattedSize for f64

const FORMATTED_SIZE: usize = 256usize

const FORMATTED_SIZE_DECIMAL: usize = 64usize

impl FormattedSize for i8

const FORMATTED_SIZE: usize = 16usize

const FORMATTED_SIZE_DECIMAL: usize = 4usize

impl FormattedSize for i16

const FORMATTED_SIZE: usize = 32usize

const FORMATTED_SIZE_DECIMAL: usize = 6usize

impl FormattedSize for i32

const FORMATTED_SIZE: usize = 64usize

const FORMATTED_SIZE_DECIMAL: usize = 11usize

impl FormattedSize for i64

const FORMATTED_SIZE: usize = 128usize

const FORMATTED_SIZE_DECIMAL: usize = 20usize

impl FormattedSize for i128

const FORMATTED_SIZE: usize = 256usize

const FORMATTED_SIZE_DECIMAL: usize = 40usize

impl FormattedSize for isize

const FORMATTED_SIZE: usize = 128usize

const FORMATTED_SIZE_DECIMAL: usize = 20usize

impl FormattedSize for u8

const FORMATTED_SIZE: usize = 16usize

const FORMATTED_SIZE_DECIMAL: usize = 3usize

impl FormattedSize for u16

const FORMATTED_SIZE: usize = 32usize

const FORMATTED_SIZE_DECIMAL: usize = 5usize

impl FormattedSize for u32

const FORMATTED_SIZE: usize = 64usize

const FORMATTED_SIZE_DECIMAL: usize = 10usize

impl FormattedSize for u64

const FORMATTED_SIZE: usize = 128usize

const FORMATTED_SIZE_DECIMAL: usize = 20usize

impl FormattedSize for u128

const FORMATTED_SIZE: usize = 256usize

const FORMATTED_SIZE_DECIMAL: usize = 39usize

impl FormattedSize for usize

const FORMATTED_SIZE: usize = 128usize

const FORMATTED_SIZE_DECIMAL: usize = 20usize

Implementors

impl FormattedSize for bf16

const FORMATTED_SIZE: usize = 256usize

const FORMATTED_SIZE_DECIMAL: usize = 64usize

impl FormattedSize for f16

const FORMATTED_SIZE: usize = 256usize

const FORMATTED_SIZE_DECIMAL: usize = 64usize