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TOPIC OVERVIEW

GraphQL/Scalars

Define the basic building blocks that tell GraphQL what kind of values your API accepts and returns.

10 QuestionsBeginnerMedium Priority ~7 min read

Scalars represent individual values in GraphQL. The standard scalar types include String, Int, Float, Boolean, and ID, and GraphQL uses them to validate the values flowing into and out of your API.

Real applications often need values that do not fit neatly into the built-in scalars, such as dates, timestamps, or custom identifiers. GraphQL allows you to define custom scalar types with your own parsing and serialization rules.

What you'll walk away knowing

How GraphQL's built-in scalar types work
Why ID is different from String
How input and output values are validated
How custom scalar types can represent values such as dates
1What are scalar types in GraphQL?Intermediate
All Topics
1
Basics
Schema
Scalars
2
Queries
Mutations
Subscriptions
Resolver
3
Directives
Pagination
Batching and Caching
Federation
4
Error Handling
Authentication and Authorization
Performance
Tools
Security
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