ml and cc^3 are not being simplified about js-quantities HOT 5 CLOSED

Doesn't the unit "ml" mean "milli-liter" (volume)? And "cm" mean "centi-meter" (length)?
Volume and length are not equivalent unit types. The "eq" function should throw an incompatible unit error.

Duh... Never-mind... "cm^3" (volume), not "cm" (length).

from js-quantities.

Ok, I see what you're doing here. The issue is just that things aren't simplified in the text representation, since the "g/cm^3" is not compatible with "ml". If you instead did:

var simplifiedVolume = v.to(sample_v);
var density = w.div(simplifiedVolume);
sample_w = sample_v.mul(density)

...it would simplify?

from js-quantities.

Thanks for that explanation. So we should just cast the units manually rather relying on automatic simplification... So are units (or prefixes) ever simplified automatically?

Do you think this would work?

// same setup as before...
var w = Qty('1 g');
var v = Qty('1 cm^3');
var density = w.div(v);
var sample_v = Qty('100 ml');
var sample_w = sample_v.mul(density);
sample_w.toString() // returns '100 ml*g/cm^3'

// would this work?
sample_w.toString('g') // expect to return '100 g'?

I'll try this next time I work with on this part of my project.

from js-quantities.

or maybe (if you already know you are looking at a result in units of "g"):

var result_in_g = sample_w.to("g");
result_in_g.toString();

,,,but yes, it looks like he added the option for target units in the toString function, so ignore my above.

from js-quantities.

So Qty does properly simplify/convert between 'ml' and 'cm^3'.

Qty('100 ml*g/cm^3').toString('g')  // returns 100g

from js-quantities.