Difference between revisions of "Physical units/CalDims"
From HaskellWiki
m (corrected days per year and result of the related calculation) |
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| Line 21: | Line 21: | ||
840 W h | 840 W h | ||
> #How much is it in a year (we derrive `year` first) | > #How much is it in a year (we derrive `year` first) | ||
| − | > year := | + | > year := 365 d |
ok. | ok. | ||
> 60 W * 2 h / d * 1 year | W h | > 60 W * 2 h / d * 1 year | W h | ||
| − | + | 43799.99999999999 W h | |
> # Bits and bytes are not defined. We do so: | > # Bits and bytes are not defined. We do so: | ||
> \u bit | > \u bit | ||
Latest revision as of 18:47, 1 February 2009
CalDims is a flexible and easy to use calculation tool that has support for units.
The calculator's features
- Support for user defined basic units and derrived units
- user defined functions
- built-in feature to simplify units
- easy unit-conversion
Example session
> # A bird is moving 1 meter per second, how far will it be in 2 hours?
> 1m/s * 2h | m
7200 m
> # A 60 Watt electric light is burning 2 hours a day. How much energy is consumed in one week?
> 60 W * 2 h / d * 7 d | J
3024000 J
> # What's that in Watt hours?
> 60 W * 2 h / d * 7 d | W h
840 W h
> #How much is it in a year (we derrive `year` first)
> year := 365 d
ok.
> 60 W * 2 h / d * 1 year | W h
43799.99999999999 W h
> # Bits and bytes are not defined. We do so:
> \u bit
ok, but an object has changed
> byte := 8 bit
ok, but an object has changed
> kbyte := 1024 byte
ok.
> mbyte := 1024 kbyte
ok.
> 2 mbyte | -
16777216 bit
> 2 mbyte | kbyte
2048 kbyte
Sources
Sources are availables at HackageDB: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/caldims