Golang 高效字符串拼接

go 用 strings.Builder 代替普通的 + 号拼接， 在本人的项目中性能有 8 ~15倍的提升，之前写的太差了。

golang code

代码是很简单的

var puts fmt.Sprintf

var builder strings.Builder

builder.WriteString(puts("0x%x,", blkHash))
builder.WriteString(puts("%d,", blkHeader.Number))
builder.WriteString(puts("0x%x,", getFromAddr(tx, big.NewInt(int64(i)))))
builder.WriteString(puts("0x%x,", txGas))
builder.WriteString(puts("0x%x,", txGasPrice))
builder.WriteString(puts("0x%x,", tx.Hash()))
builder.WriteString(puts("0x%x,", txInput))
builder.WriteString(puts("%v,", txNonce))
builder.WriteString(puts("%v,", txTo))
builder.WriteString(puts("%v,", txValue))
builder.WriteString(puts("%d\r\n", blkHeader.Time))

builder.String()

参考：

https://juejin.im/entry/5ad0696751882555784e60d3

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