Function from_context_mut

pub fn from_context_mut<C, F, R>(f: F) -> R
where
    F: FnOnce(Option<&mut C>) -> R,
    C: 'static,

Provides mutable access to the current context value

Type Parameters

• C - The type of the context value to access
• F - The function type that will operate on the context
• R - The return type from the function

Arguments

• f - A function that receives an Option<&mut C> and returns R

Examples

use with_async_context::from_context_mut;

struct MyContext {
    counter: i32
}
from_context_mut(|ctx: Option<&mut MyContext>| {
    if let Some(ctx) = ctx {
        ctx.counter += 1;
    }
});