with in normal use

Sometimes a with is just a with.

with when used in common English contexts.

# // Copyright 2025 Google LLC
# // SPDX-License-Identifier: Apache-2.0
#
// impl block for slices
impl <T> [T] {
    // A condition, but doesn't start with `is`, and uses `with` as a normal word.
    fn starts_with(&self, &[T]) -> bool;
}

• Name fragments are not hard rules, they are guidance. Sometimes a method's name will include words that break its pattern.

• In this example with have starts_with, which is a boolean condition that does not start with "is" and is suffixed by "with".

  If naming conventions were to be treated as hard rules, this would fail as a case.

  This is a good name for understanding what is going on at the callsite. We end up writing <variable>.starts_with(<sequence>) which scans well for authors and readers of code.

• Remember: the point of naming conventions is predictability, and how predictability is in service of callsite clarity and readability.