const_format_args in std - Rust (original) (raw)

std

Macro const_format_args

Source

macro_rules! const_format_args {
    ($fmt:expr) => { ... };
    ($fmt:expr, <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mo stretchy="false">(</mo></mrow><annotation encoding="application/x-tex">(</annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:1em;vertical-align:-0.25em;"></span><span class="mopen">(</span></span></span></span>args:tt)*) => { ... };
}

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

Expand description

Same as format_args, but can be used in some const contexts.

This macro is used by the panic macros for the const_panic feature.

This macro will be removed once format_args is allowed in const contexts.