How should expression names be formatted according to best practices?

Using Pascal casing for expression names is considered a best practice because it enhances readability and clarity. In Pascal casing, each word in the expression name begins with a capital letter, creating a visual distinction between the words. This is particularly valuable in environments like Appian where expression names can be complex and may contain multiple words.

For instance, an expression name like "CalculateTotalPrice" is immediately clear about its intent and purpose, making it easier for other developers to understand the functionality at a glance. This practice aligns with conventions in many programming languages and frameworks, promoting consistency and easier maintenance of the codebase.

This approach contrasts with other naming conventions which may not provide the same level of clarity. For example, using camel casing begins with a lowercase letter for the first word, which can sometimes obscure the beginning of the expression for those unfamiliar with the naming. Lowercase with underscores or hyphens can become cumbersome in readability, especially as expression names grow longer and more complex.