Hi - I am trying to write some unit tests for Datomic using core.match to
keep things succinct. I was hoping to use a match pattern like this:
[ {:e tx-eid :a :db/txInstant :v _ :tx tx-eid
:added true}
{:e _ :a :community/category :v "free stuff" :tx tx-eid
:added false} ]
to show that the transaction EID (tx-eid) shows up in 3 places in the
datoms result of a transaction. However, I am getting the error:
Exception in thread "main" java.lang.AssertionError: Pattern row 1: Pattern
row reuses wildcards in [[{:e tx-eid, :a :db/txInstant, :v _, :tx tx-eid,
:added true} {:e _, :a :community/category, :v "free stuff", :tx tx-eid,
:added false}]]. The following wildcards are ambiguous: tx-eid. There's
no guarantee that the matched values will be same. Rename the occurrences
uniquely.,
So I am apparently unable to use core.match in the way I was hoping. Are
there any workarounds to this problem?
Thanks,
Alan
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