System

From Reia

System exposes various interfacing routines for working with the external environment.

System.args()

This is used to retrieve arguments passed to the Reia interpreter. The arguments are returned as a list of strings.

Consider the example script:

puts(System.args().inspect())

If executed with:

reia example.re --foo bar --baz

it will print out:

["--foo","bar","--baz"]

System.args() even works with ire:

~$ ire 1 2 3
Reia Interactive Shell (prerelease)
Running on Erlang (BEAM) emulator version 5.6.5 [source] [smp:2] [async-threads:0] [hipe] [kernel-poll:true]

>> System.args()
=> ["1","2","3"]

System.cpus()

This returns the number of CPUs visible to Reia (i.e. the Erlang virtual machine)

>> System.cpus()
=> 4

System.halt()

This terminates the virtual machine, with an optional error code