Expressions – constant logic expressed in text

In Appian, you use low-code methods to design the largest parts of your applications. Although this is very powerful, there are situations where you need more flexibility, which only code can provide.

You can find all details about expressions on the following Appian documentation page:

https://docs.appian.com/suite/help/latest/Expressions.html

To be able to write expressions, you need to know the available functions. I highly recommend the following list of Appian functions: https://docs.appian.com/suite/help/21.4/Appian_Functions.html.

Programming paradigms

If you already have experience in other programming languages such as Java or C#, be aware that the Appian expression language is different—and by different, I mean not just the syntax; Appian expressions use an entirely different programming paradigm.

Java and C# are imperative languages in which you describe the individual steps of data transformation...