如何将多个字符串和int合并为单个字符串

我是Go的新手。 找不到任何官方文档显示如何将多个字符串合并为一个新字符串。

我所期望的是：

输入值: "key:", "value", ", key2:", 100

输出值: "Key:value, key2:100"

如果可能的话，我想使用+来合并字符串，就像在Java和Swift中一样。

I like to use fmt's Sprintf method for this type of thing. It works like normal Printf in Go or C only it returns a string. Here's an example;

output := fmt.Sprintf("%s%s%s%d", "key:", "value", ", key2:", 100)

Go docs for fmt.Sprintf

You can use strings.Join, which is almost 3x faster than fmt.Sprintf. However it can be less readable.

output := strings.Join([]string{"key:", "value", ", key2:", strconv.Itoa(100)}, "")

See https://play.golang.org/p/AqiLz3oRVq

strings.Join vs fmt.Sprintf

BenchmarkFmt-4       2000000           685 ns/op
BenchmarkJoins-4     5000000           244 ns/op

Buffer

If you need to merge a lot of strings, I'd consider using a buffer rather than those solutions mentioned above.