93 lines
1.8 KiB
Markdown
93 lines
1.8 KiB
Markdown
# Humane Units
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Just a few functions for helping humanize times and sizes.
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`go get` it as `github.com/dustin/go-humanize`, import it as
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`"github.com/dustin/go-humanize"`, use it as `humanize`
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See [godoc](https://godoc.org/github.com/dustin/go-humanize) for
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complete documentation.
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## Sizes
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This lets you take numbers like `82854982` and convert them to useful
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strings like, `83MB` or `79MiB` (whichever you prefer).
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Example:
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```go
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fmt.Printf("That file is %s.", humanize.Bytes(82854982))
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```
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## Times
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This lets you take a `time.Time` and spit it out in relative terms.
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For example, `12 seconds ago` or `3 days from now`.
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Example:
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```go
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fmt.Printf("This was touched %s", humanize.Time(someTimeInstance))
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```
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Thanks to Kyle Lemons for the time implementation from an IRC
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conversation one day. It's pretty neat.
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## Ordinals
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From a [mailing list discussion][odisc] where a user wanted to be able
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to label ordinals.
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0 -> 0th
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1 -> 1st
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2 -> 2nd
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3 -> 3rd
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4 -> 4th
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[...]
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Example:
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```go
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fmt.Printf("You're my %s best friend.", humanize.Ordinal(193))
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```
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## Commas
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Want to shove commas into numbers? Be my guest.
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0 -> 0
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100 -> 100
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1000 -> 1,000
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1000000000 -> 1,000,000,000
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-100000 -> -100,000
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Example:
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```go
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fmt.Printf("You owe $%s.\n", humanize.Comma(6582491))
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```
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## Ftoa
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Nicer float64 formatter that removes trailing zeros.
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```go
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fmt.Printf("%f", 2.24) // 2.240000
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fmt.Printf("%s", humanize.Ftoa(2.24)) // 2.24
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fmt.Printf("%f", 2.0) // 2.000000
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fmt.Printf("%s", humanize.Ftoa(2.0)) // 2
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```
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## SI notation
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Format numbers with [SI notation][sinotation].
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Example:
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```go
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humanize.SI(0.00000000223, "M") // 2.23nM
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```
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[odisc]: https://groups.google.com/d/topic/golang-nuts/l8NhI74jl-4/discussion
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[sinotation]: http://en.wikipedia.org/wiki/Metric_prefix
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