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Method in macro · Attr compiler

`Attr::arg`

pub fn arg(string key, string fallback) -> string

Import

use macro::{Attr};

Source: compiler/src/prelude/macro.hy

Value of the key = value argument, or fallback.

Called on a Attr value as value.arg(…).

Parameters#

Name	Type
`key`	`string`
`fallback`	`string`

Returns#

string

See also#

Attr: #[name(args)] on a declaration, field or variant.
Attr::src: The attribute as written: #[name(key = "v", 2)].
Attr::has: True when the attribute has an argument named key, or a bare key.