Types Glossary

Browse 5 types terms defined in plain English, from the cultural dictionary of computing.

5 Types Terms

Complex Type
A type composed of multiple fields, nested structures, or richer constraints rather than a single primitive value. Complex types are used in schemas, typed...
Conditional Type
A type-system feature that selects one resulting type or another based on a type relationship or constraint, often used in advanced generic programming....
Custom Type
A type defined by application code rather than provided directly by the language's built-in primitives. Custom types help model domain concepts explicitly and...
Declaration File
A TypeScript file with a .d.ts extension that provides type information for JavaScript code without containing implementation. Declaration files enable IDE...
Type Safety Slang
Informal use of type safety for the confidence gained when code structure prevents certain classes of mistakes. In engineering slang, the phrase often shows up...

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