golang 中 cannot use ** (type interface {}) as type **解決方案
在beego中從session中取值的時候，取出來的是intergace{}，可是我先返回的值是int型，或者是string，這個時候會出現一個錯誤： cannot use ** （變量）(type interface {}) as type **（類型）session 錯誤代碼：code func CurrentId(ctx *context.Context) int {
userStr
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