alan is a programming language created in 2018.
| #3131on PLDB | 8Years Old |
'Reasons': collection { }
'Users': collection {
'Name': text
'Active': stategroup @default: 'Yes' (
'Yes' -> { }
'No' -> {
'Reason': text -> ?^ .^ .'Reasons'
}
)
}
'Active Users':= integer 'n' = count .'Users'?'Active'|'Yes'