How to encode a nested map to JSON in Elixir?

Use `JSON.encode/1` with your nested map; it recursively converts Elixir maps and lists to JSON objects and arrays. For instance, `JSON.encode(%{data: %{nested: true}})` outputs a valid JSON string with nested structure.

Elixir JSON or Jason: which is better for my project?

Elixir JSON is simpler and native, good for basic JSON tasks, while Jason offers more features and better performance via NIFs. If you need speed or advanced parsing, Jason is typically preferred; otherwise, Elixir JSON works for straightforward use.

How to handle errors when JSON decoding fails?

The `JSON.decode/1` function returns a tuple like {:ok, result} or {:error, reason}, so you can pattern match to manage errors. For example, use case statements to log issues or provide fallback data in your application.

Can I use Elixir JSON with Phoenix for building APIs?

Yes, it integrates well with Phoenix by encoding responses and decoding requests in controllers. Add it as a dependency in mix.exs and call the encode/decode functions in your action handlers to handle JSON payloads.

How to enable verbose logging for JSON library debugging?

Add `config :json, log_level: :debug` to your application's config file, along with setting the logger level, as shown in the README. This provides detailed logs specific to JSON operations for troubleshooting.

Does Elixir JSON support streaming large JSON files?

No, Elixir JSON does not support streaming; it's designed for complete JSON strings. For streaming large datasets, consider libraries like Jason or implement custom chunked parsing, as this library lacks built-in streaming capabilities.

json — Native Elixir JSON Library

What is json?

Elixir JSON is a native JSON library for the Elixir programming language that provides encoding and decoding functions. It solves the problem of converting between Elixir data types and JSON format, which is crucial for building web APIs, handling configuration, or communicating with external services. The library is implemented directly in Elixir, offering good performance and seamless integration with Elixir projects.

Target Audience

Elixir developers who need to work with JSON data in their applications, such as when building RESTful APIs, processing JSON-based configurations, or integrating with third-party JSON APIs.

Value Proposition

Developers choose Elixir JSON for its native Elixir implementation, which ensures compatibility and performance within the Elixir ecosystem, along with its simple API for encoding and decoding JSON without external dependencies.

Native JSON library for Elixir

Use Cases

Best For

Encoding Elixir data structures like lists and maps into JSON strings
Decoding JSON strings from external APIs into Elixir maps
Building JSON-based web APIs in Elixir frameworks like Phoenix
Serializing configuration data in JSON format for Elixir applications
Handling JSON payloads in Elixir-based microservices
Debugging JSON processing with configurable library-specific logging

Not Ideal For

High-performance applications requiring NIF-based JSON parsing optimizations
Projects needing JSON Schema validation or advanced custom encoding/decoding rules
Teams already integrated with ecosystems using more feature-rich libraries like Jason

Pros & Cons

Pros

Native Elixir Integration

Built directly in Elixir, ensuring seamless compatibility with Elixir projects and good performance without external dependencies, as emphasized in the README's native implementation focus.

Simple API Design

Offers straightforward functions like `JSON.encode/1` and `JSON.decode/1` for easy JSON handling, making it accessible for common tasks such as encoding lists or decoding strings.

Configurable Debugging Support

Allows verbose logging specific to the library via application configuration, aiding in debugging JSON processing issues, as detailed in the README's logging setup example.

Cons

Limited Advanced Features

Lacks support for streaming JSON parsing, schema validation, or custom encoders/decoders, which are available in more comprehensive libraries like Jason, limiting its use for complex scenarios.

Tuple-Based Error Handling

Returns results as tuples with status (e.g., {:ok, result}), which might be less idiomatic for some Elixir patterns compared to using exceptions or monadic approaches, potentially increasing boilerplate code.

Basic Performance Profile

As a pure Elixir implementation, it may not match the speed of NIF-based alternatives for high-throughput applications, though the README does not claim superior performance, making it less ideal for demanding use cases.

Frequently Asked Questions

What is json?

Target Audience

Elixir developers who need to work with JSON data in their applications, such as when building RESTful APIs, processing JSON-based configurations, or integrating with third-party JSON APIs.

Value Proposition

Use Cases

Best For

Encoding Elixir data structures like lists and maps into JSON strings
Decoding JSON strings from external APIs into Elixir maps
Building JSON-based web APIs in Elixir frameworks like Phoenix
Serializing configuration data in JSON format for Elixir applications
Handling JSON payloads in Elixir-based microservices
Debugging JSON processing with configurable library-specific logging

Not Ideal For

High-performance applications requiring NIF-based JSON parsing optimizations
Projects needing JSON Schema validation or advanced custom encoding/decoding rules
Teams already integrated with ecosystems using more feature-rich libraries like Jason

Pros & Cons

Pros

Native Elixir Integration

Built directly in Elixir, ensuring seamless compatibility with Elixir projects and good performance without external dependencies, as emphasized in the README's native implementation focus.

Simple API Design

Offers straightforward functions like `JSON.encode/1` and `JSON.decode/1` for easy JSON handling, making it accessible for common tasks such as encoding lists or decoding strings.

Configurable Debugging Support

Allows verbose logging specific to the library via application configuration, aiding in debugging JSON processing issues, as detailed in the README's logging setup example.

Cons

Limited Advanced Features

Lacks support for streaming JSON parsing, schema validation, or custom encoders/decoders, which are available in more comprehensive libraries like Jason, limiting its use for complex scenarios.

Tuple-Based Error Handling

Basic Performance Profile

Frequently Asked Questions

json

What is json?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?

json

What is json?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?