Skip to content
perl6 Physics::Measure - do calculations on objects with values and units of measurement
Perl 6 Jupyter Notebook Other
Branch: master
Clone or download
Type Name Latest commit message Commit time
Failed to load latest commit information.
bin move singplur to Role (some errors) Aug 18, 2019
eg Reduce height of drawing Aug 4, 2019
lib/Physics move singplur to Role (some errors) Aug 18, 2019
.gitignore refactor as perl6 module Jan 4, 2019
.travis.yml Bump to 2019.03.1 Jun 6, 2019
Dockerfile Adjust Math::Polygon dependency install to avoid eg collision Jun 7, 2019
LICENSE New License - Artistic 2.0 May 12, 2019
META6.json 6.d bug hunt with randomized grammar Jun 6, 2019 Improving Binder instructions Jul 31, 2019


A set of SI, Imperial and US Unit objects that are employed by Measure objects having value, units and error(tbd) and act as operands in most calculations. Some prefix and physical constants included where needed. Some use of unicode and operator overload.

NB. Feedback in general and on the [♎️] interface in particular is very welcome!

Build Status


zef install Physics::Measure

See - worked examples for Jupyter and Binder


use Physics::Measure;
use Physics::Measure::Unit;

#Instances the usual way 
    my Unit     $u .=new(name => 'm', unitsof => 'Distance');      #Unit m
    my Distance $a .=new(value => 10, units => $u);                #Distance 10 m
#Introducing the libra operator ♎️ as shorthand to declare and load
    my $b ♎️ '50 m';                #Distance 50 m
       $b ♎️ '3 yards';             #Distance 3 yards

#The usual arithmetic operators < + - * / ** > and () brackets just work
    my $c = $a + $b;                #Distance 12.7432 m 

#Time is a perl6 Duration
    my $t ♎️ '42 s';                #Time 42 s

#Area, Speed, Frequency, Volume
    my $ab = $a * $b;               #Area 27.432 m2
    my $s  = $a / $t;               #Speed 0.238095 m.s-1
    my $f  = 1  / $t;               #Frequency 0.02381 Hz
    my $v  = $b ** 3;               #Volume 27 yards3

#Unit Conversion with the .in method
    $a.=in: <m>;                    #Distance 2.7432 m
    $s.=in: <mph>;                  #Speed 0.532604 mph 

#Normalization with the .norm method
    my $p ♎️ '27 kg m^2 / s^3';     #Power 27 kg m^2 / s^3 
    $p.=norm;                       #Power 27 W 

#Measure instances can be compared and tested as numbers or strings
    $a cmp $c;                      #Less
    $a == $ <cm>;              #True  (i.e. 10 m == 1000 cm) 
    $a eq $b;                       #False (i.e. different units)

#Colloquial terms and unicode superscripts can be used
    #square, sq, squared, cubic, cubed
    #x¹ x² x³ x⁴ and x⁻¹ x⁻² x⁻³ x⁻⁴ 

say "$u $a $b $c $t $ab $s $f $v $p"; 

Testing on Jupyter / Binder

  1. Jupyter Notebook local
  1. Jupyter Notebook hosted on Binder
  • Please try - worked examples for Jupyter and Binder - more stable release usually with much faster load time than this repo (although this will build by virtue of Docker file provided)
  • If you are the first to build e.g. a new version this can take 30 mins or so and the Binder browser UI may lose hope - please just be patient (do not reload as this restarts the build) ...

Inspired by

You can’t perform that action at this time.