GoFrame 類型轉(zhuǎn)換-基本類型

常用基本類型的轉(zhuǎn)換方法比較簡單，我們這里使用一個(gè)例子來演示轉(zhuǎn)換方法的使用及效果。

基本示例

更多的類型轉(zhuǎn)換方法請(qǐng)參考接口文檔：https://pkg.go.dev/github.com/gogf/gf/v2/util/gconv

package main

import (
    "fmt"
    "github.com/gogf/gf/v2/util/gconv"
)

func main() {
    i := 123.456
    fmt.Printf("%10s %v\n", "Int:",        gconv.Int(i))
    fmt.Printf("%10s %v\n", "Int8:",       gconv.Int8(i))
    fmt.Printf("%10s %v\n", "Int16:",      gconv.Int16(i))
    fmt.Printf("%10s %v\n", "Int32:",      gconv.Int32(i))
    fmt.Printf("%10s %v\n", "Int64:",      gconv.Int64(i))
    fmt.Printf("%10s %v\n", "Uint:",       gconv.Uint(i))
    fmt.Printf("%10s %v\n", "Uint8:",      gconv.Uint8(i))
    fmt.Printf("%10s %v\n", "Uint16:",     gconv.Uint16(i))
    fmt.Printf("%10s %v\n", "Uint32:",     gconv.Uint32(i))
    fmt.Printf("%10s %v\n", "Uint64:",     gconv.Uint64(i))
    fmt.Printf("%10s %v\n", "Float32:",    gconv.Float32(i))
    fmt.Printf("%10s %v\n", "Float64:",    gconv.Float64(i))
    fmt.Printf("%10s %v\n", "Bool:",       gconv.Bool(i))
    fmt.Printf("%10s %v\n", "String:",     gconv.String(i))
    fmt.Printf("%10s %v\n", "Bytes:",      gconv.Bytes(i))
    fmt.Printf("%10s %v\n", "Strings:",    gconv.Strings(i))
    fmt.Printf("%10s %v\n", "Ints:",       gconv.Ints(i))
    fmt.Printf("%10s %v\n", "Floats:",     gconv.Floats(i))
    fmt.Printf("%10s %v\n", "Interfaces:", gconv.Interfaces(i))
}

執(zhí)行后，輸出結(jié)果為：

      Int: 123
     Int8: 123
    Int16: 123
    Int32: 123
    Int64: 123
     Uint: 123
    Uint8: 123
   Uint16: 123
   Uint32: 123
   Uint64: 123
  Float32: 123.456
  Float64: 123.456
     Bool: true
   String: 123.456
    Bytes: [119 190 159 26 47 221 94 64]
  Strings: [123.456]
     Ints: [123]
   Floats: [123.456]
Interfaces: [123.456]

注意事項(xiàng)

數(shù)字轉(zhuǎn)換方法例如?gconv.Int/Uint?等等，當(dāng)給定的轉(zhuǎn)換參數(shù)為字符串時(shí)，會(huì)自動(dòng)識(shí)別十六進(jìn)制、八進(jìn)制。

八進(jìn)制轉(zhuǎn)換

?gconv?將前導(dǎo)?0?的數(shù)字字符串當(dāng)做八進(jìn)制轉(zhuǎn)換。例如，?gconv.Int("010")?將會(huì)返回?8?。

十六進(jìn)制轉(zhuǎn)換

?gconv?將?0x?開頭的數(shù)字字符串當(dāng)做十六進(jìn)制轉(zhuǎn)換。例如，?gconv.Int("0xff")?將會(huì)返回?255?。

特別注意，?gconv?對(duì)于前導(dǎo)?0開頭的字符串處理與標(biāo)準(zhǔn)庫的?strconv?包不一樣：?gconv?將前導(dǎo)?0?的數(shù)字字符串當(dāng)做八進(jìn)制轉(zhuǎn)換，而?strconv?將會(huì)自動(dòng)去掉前導(dǎo)?0?并按照十進(jìn)制進(jìn)行轉(zhuǎn)換。