## Article

```catala
declaration structure S:
  data id content integer
  data income content money

declaration scope A:
   context output x content collection S

scope A:
   definition x equals [
      S { -- id: 0 -- income: $0 };
      S { -- id: 1 -- income: $4 + $5 };
      S { -- id: 2 -- income: $8 * 0.65 }
   ]

declaration scope B:
   a scope A
   output argmax content S
   output argmin content S

scope B:
   definition argmax equals
     (m among a.x such that m.income * 2.0 is maximum
      or if collection empty then S { -- id: -1 --income: $0 })
   definition argmin equals
     (m among a.x such that m.income + $5 is minimum
      or if collection empty then S { -- id: -1 --income: $20 })
```

```catala-test-inline
$ catala Interpret -s A
[RESULT] Computation successful! Results:
[RESULT] x =
           [S { "id"= 0; "income"= $0.00 }; S { "id"= 1; "income"= $9.00 };
             S { "id"= 2; "income"= $5.20 }]
```

```catala-test-inline
$ catala Interpret -s B
[RESULT] Computation successful! Results:
[RESULT] argmax = S { "id"= 1; "income"= $9.00 }
[RESULT] argmin = S { "id"= 0; "income"= $0.00 }
```