Support single-expression closures in templates #611
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Fixes #284 (and #398?)
Example
Drawbacks
I think the only inconvenience of the current implementation is that
Copy
types can cause problems in combination with the automatic borrowing, see below. This should always be fixable by a clone, in this casedata.flag.clone()
. (Edit: Or by usingcopied
on the Option as mentioned by @vallentin)The alternative would be to not automatically borrow the closure expression. But then non
Copy
types would not work anymore.