Generic

flexible data type for Go

support: Go 1.12+

Install

standard go get:

go get -u github.com/usk81/generic/v2

Usage

encode/decode:

package main
import (
"encoding/json""github.com/usk81/generic/v2"
)
typeUserstruct {
NameString`json:"name"`Age generic.Int`json:"age"`
}
varuser1Useru1:= []byte(`{"name":"Daryl Dixon","age":"40"}`)
json.Unmarshal([]byte(u1), &user1)
b, _:=json.Marshal(user1)
Println(string(b))
// {"name":"Daryl Dixon","age":40}varuser2Useru2:= []byte(`{"name":"Rick Grimes"}`)
json.Unmarshal([]byte(u2), &user2)
b, _:=json.Marshal(user2)
Println(string(b))
// {"name":"Rick Grimes","age":null}

set:

package main
import (
"fmt""github.com/usk81/generic"
)
funcmain() {
v:=1.0vartb generic.Booltb.Set(v)
vb:=tb.Weak()
fmt.Printf("%v, (%T)\n", vb, vb)
// true, (bool)vartf generic.Floattf.Set(v)
vf:=tf.Weak()
fmt.Printf("%v, (%T)\n", vf, vf)
// 1, (float64)varti generic.Intti.Set(v)
vi:=ti.Weak()
fmt.Printf("%v, (%T)\n", vi, vi)
// 1, (int64)varts generic.Stringts.Set(v)
vs:=ts.Weak()
fmt.Printf("%v, (%T)\n", vs, vs)
// 1, (string)vartt generic.Timett.Set(v)
vt:=tt.Weak()
fmt.Printf("%v, (%T)\n", vt.UTC(), vt)
// 1970-01-01 09:00:01 +0900 JST, (time.Time)vartu generic.Uinttu.Set(v)
vu:=tu.Weak()
fmt.Printf("%v, (%T)\n", vu, vu)
// 1, (uint64)
}

Benchmarks

Marshal

Bool

version	requests	/op	B/op	allocs/op
1.0.0	5000000	240 ns	185	3
2.0.0	200000000	6.69 ns	0	0

Float

version	requests	/op	B/op	allocs/op
1.0.0	3000000	425 ns	192	3
2.0.0	5000000	260 ns	64	3

Int

version	requests	/op	B/op	allocs/op
1.0.0	5000000	265 ns	192	3
2.0.0	20000000	70.5 ns	16	2

String (small)

version	requests	/op	B/op	allocs/op
1.0.0	3000000	382 ns	200	3
2.0.0	20000000	89.0 ns	128	2

String (Large)

version	requests	/op	B/op	allocs/op
1.0.0	1000000	1056 ns	776	4
2.0.0	5000000	237 ns	896	2

Time

version	requests	/op	B/op	allocs/op
1.0.0	1000000	1122 ns	360	5
2.0.0	3000000	401 ns	48	1

TimestampMS

version	requests	/op	B/op	allocs/op
1.0.0	20000000	97.9 ns	32	2
2.0.0	20000000	91.2 ns	32	2

TimestampNano

version	requests	/op	B/op	allocs/op
1.0.0	10000000	114 ns	64	2
2.0.0	10000000	112 ns	64	2

Timestamp

version	requests	/op	B/op	allocs/op
1.0.0	20000000	88.4 ns	32	2
2.0.0	20000000	86.7 ns	32	2

Uint

version	requests	/op	B/op	allocs/op
1.0.0	5000000	277 ns	192	3
2.0.0	20000000	64.2 ns	16	2

Licence

MIT

Author

Yusuke Komatsu