EKeknkc·May 10, 2017
There are also a couple of code generation tools availbale such as https://github.com/cheekybits/genny and https://github.com/joeshaw/gengen
In Codegen for type safety in Gojoeshaw
gengen
Go2014–2017
joeshaw / gengen · Archived
gengen
A Go source transformation tool for generics
3Distinct people
3Mentions
0Explicit recommenders
259GitHub stars
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What it is
A Go source transformation tool for generics
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HN mentions by year3 dated mentions
Observed mentions: 2014-04-28 19:40:48 UTC to 2017-05-10 22:34:25 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2014 | 2014-01-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 2 | 1 | 1 |
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 1 | 0 | 1 |
What Hacker News says
3 sourcesGengen: A generator for typed source code from generic source code in Go
5 points · Open discussionI posted a comment about this to the blog, but I released a tool which will generate type-specific source code from a generic definition. Code is at https://github.com/joeshaw/gengen
The abs example could be reduced to:
import "github.com/joeshaw/gengen/generic"
func abs(x generic.T) generic.T {
if x < 0 {
return -x
}
return x
}
You could then generate different type-specific versions:
gengen abs.go int32 | gofmt -r 'abs -> absInt32' > abs_int32.go
gengen abs.go float64 | gofmt -r 'abs -> absFloat64' > abs_float64.go
...
The downside is that the API is annoyingly non-generic (a different abs variant for each type) but at least you didn't have to type it in a bunch of times.
I agree that abs() is kind of a toy example, but this approach has helped me a lot for various slice op
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