Allow specify numbers with suffixes
Andrey Muzalevsky
face2world at gmail.com
Thu Nov 23 13:16:44 UTC 2017
Idea is simple, also is simple to implement and do not conflicting with
existing standard
Readability of javascript can be improved in certain cases like:
- populationSize = 100000000
- maxMessageSize = 4194304
- setTimeout(foo, 30000)
- if(timeElapsed > 100) {...}
This can be changed to following:
- populationSize = 100M
- maxMessageSize = 4MB
- setTimeout(foo, 30s)
- if(timeElapsed > 0.1s) {...}
Also it will be great to support floating number, most convinient way to do
this is tract suffix just like a multipler, so
1.5MB == 1.5 * 1MB
Supported suffixes, as I see them:
- Metric prefixes group
- follow SI Prefixes
<http://www.npl.co.uk/reference/measurement-units/si-prefixes/>
scheme, to decrease entrance level
- allowing to use short and full form
- it is case sensetive (bad, but everyone knows it)
- not sure about μ, it either:
- (my preference) supported as UTF-8 sumbol, always can be replaced
with 'full' form when needed(is it recommended to use?)
- has a replace symbol which can be easily typed
- allowed only in full form
- samples:
- 4M == 4mega == 4 000 000
- 5n == 5nano == 0.000 000 005
- 1micro == 0.000 001
- Bytes prefixes group
- Metric prefixes turned into bytes prefixes by adding either 'B' to
short form, or 'byte[s]' to full form
- Byte suffix is written in upper-case 'B', e.g. 'kB', 'MB', 'GB'
- This is done to remove inconsistency with widely used
bit/byte differentiation, e.g. `kb` and `KB` usually mean
different things
- Samples:
- 1kB = 1kilobyte = 1024
- 1MB = 1megabyte = 1024*1024
- Time group, counted in milliseconds
- s, sec = 1000
- min = 60 * 1000
- h, hr = 60 * 60 * 1000
- d, day[s] = 24 * 60 * 60 * 1000
- w, week[s] = 7 * 24 * 60 * 60 * 1000
- Also it will be good to allow compound number definitions, samples
- 1h 30min = 1h + 30min
- 1mB 200kB = 1mB + 200kB
What do you think?
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