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Programming language: Go
License: MIT License
Tags: Go Generate Tools    
Latest version: v2.2.1

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README

Generic

go.dev reference License codecov Go Report Card

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"
)

type User struct {
    Name String      `json:"name"`
    Age  generic.Int `json:"age"`
}

var user1 User
u1 := []byte(`{"name":"Daryl Dixon","age":"40"}`)
json.Unmarshal([]byte(u1), &user1)
b, _ := json.Marshal(user1)
Println(string(b))
// {"name":"Daryl Dixon","age":40}

var user2 User
u2 := []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"
)

func main() {
    v := 1.0

    var tb generic.Bool
    tb.Set(v)
    vb := tb.Weak()
    fmt.Printf("%v, (%T)\n", vb, vb)
    // true, (bool)

    var tf generic.Float
    tf.Set(v)
    vf := tf.Weak()
    fmt.Printf("%v, (%T)\n", vf, vf)
    // 1, (float64)

    var ti generic.Int
    ti.Set(v)
    vi := ti.Weak()
    fmt.Printf("%v, (%T)\n", vi, vi)
    // 1, (int64)

    var ts generic.String
    ts.Set(v)
    vs := ts.Weak()
    fmt.Printf("%v, (%T)\n", vs, vs)
    // 1, (string)

    var tt generic.Time
    tt.Set(v)
    vt := tt.Weak()
    fmt.Printf("%v, (%T)\n", vt.UTC(), vt)
    // 1970-01-01 09:00:01 +0900 JST, (time.Time)

    var tu generic.Uint
    tu.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


*Note that all licence references and agreements mentioned in the generic README section above are relevant to that project's source code only.