Module rt

🔬This is a nightly-only experimental API. (fmt_internals)

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

Do not modify them without understanding the consequences for the format_args!() macro.

Macros

argument_new 🔒 Experimental

Structs

ArgumentExperimental

This struct represents a generic “argument” which is taken by format_args!().

PlaceholderExperimental

UnsafeArgExperimental

This struct represents the unsafety of constructing an Arguments. It exists, rather than an unsafe function, in order to simplify the expansion of format_args!(..) and reduce the scope of the unsafe block.

Enums

ArgumentType 🔒 Experimental

CountExperimental

Used by width and precision specifiers.