std::range_format

(C++26)

Defined in header `<format>`
enum class range_format { disabled, map, set, sequence, string, debug_string };		(since C++23)

Specifies how a range should be formatted.

Enumerator	Meaning
`disabled`	disallows range default formatter to format range
`map`	allows to format range as map representation with modified brackets "{", "}" and separator ": " for underlying pair-like types in the following format: { key-1 : value-1, ..., key-n : value-n }
`set`	allows to format range as set representation with modified brackets "{" and "}" in the following format: { key-1, ..., key-n }
`sequence`	allows to format range as sequence representation with default brackets "[", "]" and separator ", " in the following format: [ element-1, ..., element-n ]
`string`	allows to format range as string
`debug_string`	allows to format range as escaped string

formatter (C++20)	defines formatting rules for a given type (class template) [edit]
format_kind (C++23)	selects a suited std::range_format for a range (variable template)[edit]

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros (C++20)
Language support library
Concepts library (C++20)
Diagnostics library
Memory management library
Metaprogramming library (C++11)
General utilities library
Containers library
Iterators library
Ranges library (C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library (C++17)
Concurrency support library (C++11)
Execution control library (C++26)
Technical specifications
Symbols index
External libraries

Standard format specification
Formatting functions
format (C++20)
format_to (C++20)
format_to_n (C++20)
formatted_size (C++20)
vformat (C++20)
vformat_to (C++20)
Format strings
basic_format_stringformat_stringwformat_string (C++20)(C++20)(C++20)
runtime_format (C++26)
Formatting concepts
formattable (C++23)
Formatter
formatter (C++20)
formatter<pair-or-tuple> (C++23)
formatter<range> (C++23)
range_formatter (C++23)
enable_nonlocking_formatter_optimization (C++23)
basic_format_parse_contextformat_parse_contextwformat_parse_context (C++20)(C++20)(C++20)
basic_format_contextformat_contextwformat_context (C++20)(C++20)(C++20)
range_format (C++23)
format_kind (C++23)
Formatting arguments
basic_format_arg (C++20)
basic_format_arg::handle (C++20)
basic_format_argsformat_argswformat_args (C++20)(C++20)(C++20)
visit_format_arg (C++20) (deprecated in C++26)
make_format_argsmake_wformat_args (C++20)(C++20)
Format error
format_error (C++20)