Macro bump_scope::bump_format

macro_rules! bump_format {
    (in $bump:expr) => { ... };
    (in $bump:expr, $($arg:tt)*) => { ... };
    (try in $bump:expr) => { ... };
    (try in $bump:expr, $($arg:tt)*) => { ... };
}

This is like format! but allocates inside a mutable bump allocator, returning a BumpString.

If you don’t need a BumpString you can use alloc_fmt instead, which does not require a mutable $bump.

Panics

If used without try, panics on allocation failure or if a formatting trait implementation returns an error.

Errors

If used with try, errors on allocation failure or if a formatting trait implementation returns an error.

Examples

let greeting = "Hello";
let mut string = bump_format!(in bump, "{greeting} world!");
string.push_str(" How are you?");

assert_eq!(string, "Hello world! How are you?");