What Is PascalCase?

PascalCase is a naming convention where every word in a compound identifier begins with a capital letter, with no spaces or separators. It looks like CamelCase but with the first letter also capitalized. • camelCase: userProfileSettings (first word lowercase) • PascalCase: UserProfileSettings (every word capitalized)

Where Is PascalCase Used?

• •C# and .NET: PascalCase is the official convention for class names, method names, properties, and namespaces.
• •React components: All React component names must start with a capital letter to distinguish them from plain HTML elements — <MyButton />, <UserCard />.
• •TypeScript interfaces and types: TypeScript conventions use PascalCase for interfaces (IUserData), type aliases, and enums.
• •Python classes: While Python uses snake_case for functions, it uses PascalCase for class names per PEP 8 — class UserProfile.
• •Swift classes and structs: Apple's Swift naming conventions use PascalCase for types and protocols.
• •Java classes: Java class names are PascalCase by convention — ArrayList, HttpClient, UserRepository.

When to Use PascalCase vs. camelCase

• JavaScript variables/functions → camelCase • JavaScript/TypeScript class names → PascalCase • React component names → PascalCase • Python functions → snake_case • Python class names → PascalCase • C# everything (methods, classes, properties) → PascalCase

Frequently Asked Questions