58 lines
1.5 KiB
Go
58 lines
1.5 KiB
Go
package main
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import (
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"fmt"
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"strconv"
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"time"
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)
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func main() {
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const loopCount = 10000000 // 1000万次循环，模拟高频场景
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// 一、整数→字符串
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// 1. fmt.Sprintf整数转字符串
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fmtStart := time.Now()
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for i := 0; i < loopCount; i++ {
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_ = fmt.Sprintf("%d", i)
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}
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fmt.Printf("整数→字符串 fmt.Sprintf耗时：%v\n", time.Since(fmtStart))
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// 2. strconv.Itoa整数转字符串
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strconvStart := time.Now()
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for i := 0; i < loopCount; i++ {
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_ = strconv.Itoa(i)
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}
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fmt.Printf("整数→字符串 strconv.Itoa耗时：%v\n", time.Since(strconvStart))
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// 二、浮点数→字符串
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// 1. fmt.Sprintf浮点数转字符串
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fmtStart2 := time.Now()
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for i := 0; i < loopCount; i++ {
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_ = fmt.Sprintf("%.2f", 3.14)
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}
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fmt.Printf("浮点数→字符串 fmt.Sprintf耗时：%v\n", time.Since(fmtStart2))
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// 2. strconv.FormatFloat浮点数转字符串
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strconvStart2 := time.Now()
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for i := 0; i < loopCount; i++ {
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_ = strconv.FormatFloat(3.14, 'f', 2, 64)
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}
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fmt.Printf("浮点数→字符串 strconv.FormatFloat耗时：%v\n", time.Since(strconvStart2))
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// 三、布尔值→字符串
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// 1. fmt.Sprintf布尔值转字符串
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strconvStart3 := time.Now()
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for i := 0; i < loopCount; i++ {
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_ = fmt.Sprintf("%t", true)
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}
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fmt.Printf("布尔值→字符串 fmt.Sprintf耗时：%v\n", time.Since(strconvStart3))
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// 2. fmt.FormatBool布尔值转字符串
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fmtStart3 := time.Now()
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for i := 0; i < loopCount; i++ {
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_ = strconv.FormatBool(true)
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}
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fmt.Printf("布尔值→字符串 strconv.FormatBool耗时：%v\n", time.Since(fmtStart3))
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}
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