Programming in 5D

Gentle Introduction

For a gentle introduction, see 5D Tutorial.

Source Code Character Set

The Source Code Character Set is supposed to be UTF-8.

The first 128 characters are used for the following:

Valid Names

frobnicate
μ
mayTheForceBeWithYou42
σ
ελεκτρων
+
**
⋅

Valid Numbers

5
(-3)
5.23232245322151
358888888888888888888888888888888888888888888888888888888888888888888888888888
#xFF                    => 255
#o777                   => 511
#\A                     => 65   -- the character code of A

Module System

In order to access modules, use the requireModule function.

Note that this automatically ensures that the module isn't loaded twice.

Result is the module. By convention, you can check for exports by using the expression:

(requireModule "IO").exports

Foreign Function Interface

You can load and call procedures of shared libraries:

Example:

let FFI := requireModule "FFI" in 
let requireSharedLibrary := FFI.requireSharedLibrary in 
let puts! := FFI.requireSharedLibrary "/lib/x86_64-linux-gnu/libc.so.6" 'Cip "puts" in 
puts! "Hello world"

What this does is:

- load the library with the given file name.

- give a procedure signature (usually as a Symbol).

- give the name of the procedure to load (usually as a Str).

- result is a callable.

The procedure signature is a Symbol whose str consists of the following characters:

Result is a function which can be run in a World.

Possible type specifiers: