gconv

gf框架提供了非常强大的类型转换包gconv，可以实现将任何数据类型转换为指定的数据类型，对常用基本数据类型之间的无缝转换，同时也支持任意类型到struct对象的转换。由于gconv模块内部大量使用了断言而非反射(仅struct转换使用到了反射)，因此执行的效率非常高。

使用方式：

  1. import "github.com/gogf/gf/util/gconv"

接口文档：

https://godoc.org/github.com/gogf/gf/util/gconv

  1. // 基本类型
  2. func Bool(i interface{}) bool
  3. func Float32(i interface{}) float32
  4. func Float64(i interface{}) float64
  5. func Int(i interface{}) int
  6. func Int16(i interface{}) int16
  7. func Int32(i interface{}) int32
  8. func Int64(i interface{}) int64
  9. func Int8(i interface{}) int8
  10. func String(i interface{}) string
  11. func Uint(i interface{}) uint
  12. func Uint16(i interface{}) uint16
  13. func Uint32(i interface{}) uint32
  14. func Uint64(i interface{}) uint64
  15. func Uint8(i interface{}) uint8
  17. // slice类型
  18. func Bytes(i interface{}) []byte
  19. func Ints(i interface{}) []int
  20. func Floats(i interface{}) []float64
  21. func Strings(i interface{}) []string
  22. func Interfaces(i interface{}) []interface{}
  23. func Structs(params interface{}, pointer interface{}, mapping ...map[string]string) (err error)
  24. func StructsDeep(params interface{}, pointer interface{}, mapping ...map[string]string) (err error)
  26. // 时间类型
  27. func Time(i interface{}, format ...string) time.Time
  28. func TimeDuration(i interface{}) time.Duration
  30. // Map转换, 支持的类型包括：任意map或struct
  31. func Map(value interface{}, tags ...string) map[string]interface{}
  32. func MapDeep(value interface{}, tags ...string) map[string]interface{}
  34. // 对象转换
  35. func Struct(params interface{}, pointer interface{}, mapping ...map[string]string) error
  36. func StructDeep(params interface{}, pointer interface{}, mapping ...map[string]string) error
  38. // 根据类型名称执行基本类型转换(非struct转换)
  39. func Convert(i interface{}, t string, extraParams ...interface{}) interface{}

基准性能测试

测试转换变量值为123456789，类型int。

  1. john@john-B85M:~/Workspace/Go/GOPATH/src/github.com/gogf/gf/util/gconv$ go test *.go -bench=".*" -benchmem
  2. goos: linux
  3. goarch: amd64
  4. BenchmarkString-4               20000000                71.8 ns/op            24 B/op          2 allocs/op
  5. BenchmarkInt-4                  100000000               22.2 ns/op             8 B/op          1 allocs/op
  6. BenchmarkInt8-4                 100000000               24.5 ns/op             8 B/op          1 allocs/op
  7. BenchmarkInt16-4                50000000                23.8 ns/op             8 B/op          1 allocs/op
  8. BenchmarkInt32-4                100000000               24.1 ns/op             8 B/op          1 allocs/op
  9. BenchmarkInt64-4                100000000               21.7 ns/op             8 B/op          1 allocs/op
  10. BenchmarkUint-4                 100000000               22.2 ns/op             8 B/op          1 allocs/op
  11. BenchmarkUint8-4                50000000                25.6 ns/op             8 B/op          1 allocs/op
  12. BenchmarkUint16-4               50000000                32.1 ns/op             8 B/op          1 allocs/op
  13. BenchmarkUint32-4               50000000                27.7 ns/op             8 B/op          1 allocs/op
  14. BenchmarkUint64-4               50000000                28.1 ns/op             8 B/op          1 allocs/op
  15. BenchmarkFloat32-4              10000000               155 ns/op              24 B/op          2 allocs/op
  16. BenchmarkFloat64-4              10000000               177 ns/op              24 B/op          2 allocs/op
  17. BenchmarkTime-4                  5000000               240 ns/op              72 B/op          4 allocs/op
  18. BenchmarkTimeDuration-4         50000000                26.2 ns/op             8 B/op          1 allocs/op
  19. BenchmarkBytes-4                10000000               149 ns/op             128 B/op          3 allocs/op
  20. BenchmarkStrings-4              10000000               223 ns/op              40 B/op          3 allocs/op
  21. BenchmarkInts-4                 20000000                55.0 ns/op            16 B/op          2 allocs/op
  22. BenchmarkFloats-4               10000000               186 ns/op              32 B/op          3 allocs/op
  23. BenchmarkInterfaces-4           20000000                66.6 ns/op            24 B/op          2 allocs/op
  24. PASS
  25. ok      command-line-arguments  35.356s