If I declare constants as the following I get the error 'const initializer in os.Getenv("MY_SECRET") is not a constant'. Why is this?
New to Go and I see the return type of Getenv is a string, but I don't understand why this wouldn't work as a constant.
const (
secret = os.Getenv("MY_SECRET")
key = os.Getenv("MY_KEY")
)
如果我将常量声明为以下内容，则会在os.Getenv（“ MY_SECRET”）中得到错误'const initializer 不是一个常数”。 为什么会这样？
Go的新手，我看到Getenv的返回类型是一个字符串，但是我不明白为什么这不能作为常量工作。
const（
secret = os.Getenv（“ MY_SECRET”）
key = os.Getenv（“ MY_KEY”）
）
< / pre>
Just like the error says, a constant must have a constant value. You cannot set it to the return of a function. It must be evaluated at compile time (e.g. a string literal). If you want to store the values of environment variables looked up at run time, you'll have to store them in variables, not constants.
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