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Improve `unwrap_or_else_default` when handling `unwrap_or_else(XXX::new)` by pmn...
source link: https://github.com/rust-lang/rust-clippy/pull/8163
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changelog: change unwrap_or_else_default to work with std constructors like Vec::new, HashSet::new, HashMap::new.
Notes:
- Code to handle detecting those constructors is already there. I moved it out to
is_default_equivalent_call
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