Macro format_compact

macro_rules! format_compact {
    ($($arg:tt)*) => { ... };
}

Creates a CompactString using interpolation of runtime expressions.

The first argument format_compact! receives is a format string. This must be a string literal. The power of the formatting string is in the {}s contained.

Additional parameters passed to format_compact! replace the {}s within the formatting string in the order given unless named or positional parameters are used; see std::fmt for more information.

A common use for format_compact! is concatenation and interpolation of strings. The same convention is used with print! and write! macros, depending on the intended destination of the string.

To convert a single value to a string, use the ToCompactString::to_compact_string method, which uses the std::fmt::Display formatting trait.

Panics

format_compact! panics if a formatting trait implementation returns an error.

This indicates an incorrect implementation since ToCompactString::to_compact_string never returns an error itself.