Appian Expression Language Essentials: Data Types, Operators & Functions (Day 2)

Day 2 of the Lowcode Learners Appian beginner-to-advanced series. Learn the expression-language basics every Appian developer uses daily, then combine them into a real rule that builds a leave summary. You'll learn: • Data types: Text, Integer, Decimal, Boolean, Date, Date and Time, lists • Operators: + - * / ^ %, = and , and & for text • Text: upper, proper, trim, len • Dates: today, date, text formatting, networkdays with holidays • Lists: sum, length, index (1-based, with default), contains • Two common mistakes and two interview questions Syntax checked against the Appian 25.3 documentation. ⏱️ Chapters: 0:00 Expression Essentials 0:34 Data Types 1:16 Operators 1:49 Text Functions 2:11 Date Functions 2:52 List Functions 3:24 Build: Leave Summary 4:11 Common Mistakes 4:43 Best Practices 5:12 Interview Questions 5:57 Next Up 💬 Day 2 challenge: write the expression that shows a leave end date as "Fri, 07 Nov". Best answer gets pinned 👇 📚 Full series: 26 days from Appian beginner to advanced, building one real HR Leave Management app. Subscribe to Lowcode Learners so you don't miss the next episode. #Appian #LowCode #AppianTutorial #Day2