Question 1

How do I handle null values instead of undefined in PureScript Simple JSON?

Accepted Answer

Use the Nullable type provided by the library, as the default Maybe type maps null and undefined to Nothing. This is crucial for APIs that distinguish between null and undefined, as noted in the README warning.

Question 2

How to customize JSON field names when decoding with Simple JSON?

Accepted Answer

Follow the guide on inferred record types, which explains how to change how fields are read or written using the library's API. This allows adapting to different JSON naming conventions without manual encoders.

Question 3

PureScript Simple JSON vs Argonaut: which should I use?

Accepted Answer

Simple JSON is better for automatic derivation from record types with minimal code, ideal for straightforward JSON handling. Argonaut offers more manual control and combinators for complex, custom JSON structures but requires more boilerplate.

Question 4

How to integrate Simple JSON with Affjax for HTTP requests?

Accepted Answer

Refer to the 'with Affjax' page in the documentation, which provides specific examples for handling JSON in HTTP calls. This integration simplifies API interactions by leveraging automatic encoding and decoding.

Question 5

Can Simple JSON decode nested JSON objects or arrays automatically?

Accepted Answer

Yes, it can handle nested records and arrays based on PureScript's type definitions, as long as the types statically match the JSON structure. This is inferred using RowToList without additional code.

Question 6

How to write encoders for custom data types in Simple JSON?

Accepted Answer

Use the generics-rep support detailed in the guide for working with data types, which enables automatic derivation for algebraic data types by leveraging PureScript's generic programming features.

purescript-simple-json

What is purescript-simple-json?

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