System.Keys - Manhunter07/MFL GitHub Wiki

Declaration

function Keys(Value: System.Struct): array = \built-in\

Description

The Keys function in the System package returns all member keys within the structure passed as argument for the Value parameter in an array.

• If the argument holds a string or an array, the function returns all possible indices (this being a list of numbers from 0 to Length(Value) - 1)
• If the argument holds a record, the function returns all its key strings
• If the argument holds an empty structure ("", [] or {}), the function returns an empty array ([])

See also

• System.Values
• System.Length