19 lines
379 B
Go
19 lines
379 B
Go
package main
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import (
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"fmt"
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"time"
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)
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func main() {
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const loopCount = 100000 // 10万次拼接
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var result string
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start := time.Now()
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for i := 0; i < loopCount; i++ {
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result += fmt.Sprintf("item_%d,", i) // 每次拼接生成新字符串，内存分配频繁
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}
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fmt.Printf("fmt循环拼接耗时：%v\n", time.Since(start))
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_ = result // 避免未使用变量警告
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}
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