► |  | The Racket Reference

1 | Language Model
2 | Syntactic Forms
3 | Datatypes
4 | Structures
5 | Classes and Objects
6 | Units
7 | Contracts
8 | Pattern Matching
9 | Control Flow
10 | Concurrency and Parallelism
11 | Macros
12 | Input and Output
13 | Reflection and Security
14 | Operating System
15 | Memory Management
16 | Unsafe Operations
17 | Running Racket
| Bibliography
| Index

▼ | 17 | Running Racket

17.1 | Running Racket or GRacket
17.2 | Libraries and Collections
17.3 | Interactive Help
17.4 | Interactive Module Loading
17.5 | Debugging
17.6 | Kernel Forms and Functions

• | 17.6 | Kernel Forms and Functions

5.3.6
top ← prev up next →

#### 17.6`` Kernel Forms and Functions

#lang racket/kernel

The racket/kernel library is a cross-phase persistent module that provides a minimal set of syntactic forms and functions.

“Minimal” means that racket/kernel includes only forms that are built into the Racket compiler and only functions that are built into the run-time system. Currently, the set of bindings is not especially small, nor is it particularly well-defined, since the set of built-in functions can change frequently. Use racket/kernel with care, and beware that its use can create compatibility problems.

The racket/kernel module exports all of the bindings in the grammar of fully expanded programs (see Fully Expanded Programs), but it provides #%plain-lambda as lambda and λ, #%plain-app as #%app, and #%plain-module-begin as #%module-begin. Aside from #%datum (which expands to quote), racket/kernel provides no other syntactic bindings.

The racket/kernel module also exports many of the function bindings from racket/base, and it exports a few other functions that are not exported by racket/base because racket/base exports improved variants. The exact set of function bindings exported by racket/kernel is unspecified and subject to change across versions.

(require racket/kernel/init)

The racket/kernel/init library re-provides all of racket/kernel. It also provides #%top-interaction, which makes racket/kernel/init useful with the -I command-line flag for racket.
top ← prev up next →