golang判断字符串是否为空的方法

golang判断字符串是否为空的方法：

var s string
if s=="" {
    
}

或：

if len(s)==0{}

推荐使用第一种方法判断字符串是否为空，就字符串是否为空这个语义而言，第一种语义更直接了当，应该是更推荐的。

> The one that makes the code clear.
If I'm about to look at element x I typically write
len(s) > x, even for x == 0, but if I care about
"is it this specific string" I tend to write s == "".
>
>It's reasonable to assume that a mature compiler will compile
len(s) == 0 and s == "" into the same, efficient code.
Right now 6g etc do compile s == "" into a function call
while len(s) == 0 is not, but that's been on my to-do list to fix.

>Make the code clear.
>
>Russ

更多golang知识请关注golang教程栏目。

以上就是golang判断字符串是否为空的方法的详细内容，更多请关注gxlsystem.com其它相关文章！