AlephAlpha 6e63014d57 Add default value for properties (takes a function instead of an expression) (#881)
* Add `default` value for properties

* Default values specified by paths instead of exprs

* Fix misleading error message

* Remove confusing Option
2020-01-20 00:21:32 +08:00
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2019-07-20 22:38:50 -04:00