Type conversion of singleton lists

[saig0]

Is your feature request related to a problem? Please describe.
A singleton list (i.e. a list with one item) can be converted into a value and visa-verse.

For example, if a function expects an argument of the type list<string> and the parameter value is of type string then the parameter value is converted into list<string>.

Describe the solution you'd like

From DMN 1.3 (page 134)

Related issues

• Camunda BPM:
• Zeebe broker:

[falko]

Here is a practical use case where this standard feature would lead to more readable code, i.e. the index access could be left out and weights[sensor = "ARIC"][1].weight would become just weights[sensor = "ARIC"].weight