`with`: Working with Closures

with as in "do X, but with this specific way of computing things."

rust,compile_fail

# // Copyright 2025 Google LLC
# // SPDX-License-Identifier: Apache-2.0
#
impl<T> Vec<T> {
    // Simplified. If the resize is larger than the current vec size, use the
    // closure to populate elements.
    pub fn resize_with(&mut self, new_len: usize, f: impl FnMut() -> T);
}

mod iter {
    // Create an infinite, lazy iterator using a closure.
    pub fn repeat_with<A, F: FnMut() -> A>(repeater: F) -> RepeatWith<F>;
}

with can appear as a suffix to communicate there is a specific function or closure that can be used instead of a "sensible default" for a computation.

Similar to by.

</details>

`with`: Working with Closures

with: Working with Closures

`with`: Working with Closures