What is a Function?

• Functions are displayed in the multiway select with their names, followed by parentheses (), indicating that they are a function.

• If a function has parameters, these will be displayed alongside the expected parameter type within the parentheses, such as (string).

• When a function is selected in the multiway select, it will appear in a light blue color tag to indicate that it is currently selected. Any associated parameters for the selected function will be displayed on the next line.

• There are two types of Functions in Langstack applications: Static functions and Variable functions.

  • Static functions do not require a value to use them.

    • Static Function is accessible directly from the Type by simply referencing the Type itself. Therefore, users must navigate to the Type first to reach its available functions.

    • The available Static functions in Langstack applications are for the following Types:

      • DateTime

      • GUID

      • Numerical

      • String

      • Timestamp

• Variable functions can only be accessed if a value exists.

  • The value is either displayed as the function's returned result or is stored in a variable.

  • To access the functions available for the value, users need to navigate further down (drill into) the value.

  • When selecting a function, it is possible to call the functions available from the returned value to refine the desired result further. For example: Type>Static Function>Returned Variable Function>Returned value of the returned value.

  • The value returned from the function can be stored in a variable.

  • The Update Variable Action is used to update the variable with a value.

  • The Value must be provided by the user or returned from a function.