Module fmt

Utilities for formatting and printing strings.

Re-exports

pub use self::builders::DebugList;

pub use self::builders::DebugMap;

pub use self::builders::DebugSet;

pub use self::builders::DebugStruct;

pub use self::builders::DebugTuple;

pub use self::builders::FromFn;Experimental

pub use self::builders::from_fn;Experimental

Modules

builders 🔒

flags 🔒

float 🔒

macros 🔒

num 🔒

Integer and floating-point number formatting

rt 🔒 Experimental

All types and methods in this file are used by the compiler in the expansion/lowering of format_args!().

Macros

fmt_refs 🔒

last_type 🔒

maybe_tuple_doc 🔒

peel 🔒

tuple 🔒

Structs

Arguments

This structure represents a safely precompiled version of a format string and its arguments. This cannot be generated at runtime because it cannot safely be done, so no constructors are given and the fields are private to prevent modification.

Error

The error type which is returned from formatting a message into a stream.

Formatter

Configuration for formatting.

PostPadding 🔒

Padding after the end of something. Returned by Formatter::padding.

FormattingOptionsExperimental

Options for formatting.

Enums

Alignment

Possible alignments returned by Formatter::align

DebugAsHexExperimental

Specifies whether the Debug trait should use lower-/upper-case hexadecimal or normal integers.

SignExperimental

The signedness of a Formatter (or of a FormattingOptions).

Traits

Binary

b formatting.

Debug

? formatting.

Display

Format trait for an empty format, {}.

LowerExp

e formatting.

LowerHex

x formatting.

Octal

o formatting.

Pointer

p formatting.

UpperExp

E formatting.

UpperHex

X formatting.

Write

A trait for writing or formatting into Unicode-accepting buffers or streams.

Functions

getcount 🔒 ^⚠

pointer_fmt_inner 🔒

Since the formatting will be identical for all pointer types, uses a non-monomorphized implementation for the actual formatting to reduce the amount of codegen work needed.

run 🔒 ^⚠

write

Takes an output stream and an Arguments struct that can be precompiled with the format_args! macro.

Type Aliases

Result

The type returned by formatter methods.

Derive Macros

Debug

Derive macro generating an impl of the trait Debug.