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Frink

frinklang.org

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Re: Frink

#14

Post by arnarbi »

simias wrote: post #9
Twirrim wrote: post #6

I love these examples: Let's say you wanted to fill your bedroom up with water. How much water would it take? Let's say your room measures 10 feet by 12 feet wide by 8 feet high. 10 feet 12 feet 8 feet -> gallons 552960/77 (approx. 7181.298701298701) It would take approximately 7181 gallons to fill it. Note that you get both an exact fraction and an approximation. (If you don't want to see the fraction, put a decimal…

Amusingly, this example wouldn't be nearly as impressive if you used metric units instead.

Indeed

  3 m 4 m 3 m -> liters
  36000
  
  3 m 4 m 3 m water -> kg
  36000
  
  2 metricton / (3 m 4 m water) -> m
  1/6

Re: Frink

#15

Post by seiferteric »

Twirrim wrote: post #6

I love these examples: Let's say you wanted to fill your bedroom up with water. How much water would it take? Let's say your room measures 10 feet by 12 feet wide by 8 feet high. 10 feet 12 feet 8 feet -> gallons 552960/77 (approx. 7181.298701298701) It would take approximately 7181 gallons to fill it. Note that you get both an exact fraction and an approximation. (If you don't want to see the fraction, put a decimal…

These are fun and I do them often, but you can just use google for most of this.

Re: Frink

#17

Post by [deleted] »

arnarbi wrote: post #14
simias wrote: post #9

Earlier quoted context omitted.

Amusingly, this example wouldn't be nearly as impressive if you used metric units instead.

Indeed 3 m 4 m 3 m -> liters 36000 3 m 4 m 3 m water -> kg 36000 2 metricton / (3 m 4 m water) -> m 1/6

[deleted]

Re: Frink

#18

Post by blattimwind »

seiferteric wrote: post #15
Twirrim wrote: post #6

I love these examples: Let's say you wanted to fill your bedroom up with water. How much water would it take? Let's say your room measures 10 feet by 12 feet wide by 8 feet high. 10 feet 12 feet 8 feet -> gallons 552960/77 (approx. 7181.298701298701) It would take approximately 7181 gallons to fill it. Note that you get both an exact fraction and an approximation. (If you don't want to see the fraction, put a decimal…

These are fun and I do them often, but you can just use google for most of this.

GNU units

Re: Frink

#19

Post by gerdesj »

tosh wrote: post #5

The units file (and its comments) makes a thrilling read https://frinklang.org/frinkdata/units.txt

There are some great notes in there and also things that you will almost certainly not know already.

Beware the SI's broken definition of Hz. You should treat the radian as being correct, as a fundamental dimensionless property of the universe that falls out of pure math like the Taylor series for sin[x], and you should treat the Hz as being a fundamental property of incompetence by committee.

[...]

Either way, if I ever develop a time machine, I'm going to go back and knock both groups' heads together. At a frequency of about 1 Hz. Or better yet, strap them to a wheel and tell them I'm going to spin one group at a frequency of 1 Hz, and the other at 1 radian/s and let them try to figure out which one of those stupid inconsistent definitions means what. Hint: It'll depend on which time period I do it in, I guess, thanks to their useless inconsistent definition changes.

The rest of the diatribe on Hz ends up amusingly spittle flecked with some decent frothing in evidence. I always knew that the kilo was bollocks (lump in a jar) but that barely gets a nod here. I had no idea about the state of some of the other units (like Hz)

Re: Frink

#20

Post by heisenzombie »

For people in Python-world, I've tried many units packages and tend to prefer https://pint.readthedocs.io

For the bedroom example someone posted, here's the equivalent in pint:

    import pint
    # Possibly my least favorite thing about Pint is 
    # the verbose importing/instantiating dance
    u = pint.UnitRegistry()
    q = u.quantity()

    # there are multiple ways of making  objects:
    volume = q('10 feet') * q(10, 'feet') * (10 * u.feet)
    volume.to('gallons)
    
    # How deep could you fill the room?
    (q('2 tons') / (q('10 feet') * q('12 feet') * u.water/u.gravity)).to('feet')
Notes:

- Pint has far fewer material property entries in its database (though one can make arbitrary unit registries --- I'm wondering about an importer for the Frink ones... but https://frinklang.org/frinkdata/units.txt doesn't seem to have a license?)

- That said, I'm not wild about Frink's treatment of material properties: Why is the constant `butter` a density, but `eggwhite` a mass, and `naturalgas` a specific energy?

- Pint works (mostly) nicely with numpy and can (sometimes) drop into existing code, since objects quack like builtin numbers.

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