在我正在写的打印函数中,我试图根据switch语句的结果返回一个值;但是,我得到的错误太多,无法返回。
如果这个问题的答案很简单,请原谅我,但是函数有多少个参数可以返回一件事就不应该吗?还是需要为每个参数返回一件事。
这是我的代码。我在返回行上收到错误(返回的参数过多)。如何修复它,使其返回在switch语句中设置的字符串?
package bay func Print(DATA []TD, include string, exclude []string, str string) { result := NBC(DATA, include, exclude, str) var sentAnal string switch result { case 1: sentAnal = "Strongly Negative" case 2: sentAnal = "Very Negative" case 3: sentAnal = "Negative" case 4: sentAnal = "Little Negative" case 5: sentAnal = "Neurtral" case 6: sentAnal = "Little Positive" case 7: sentAnal = "Positive" case 8: sentAnal = "More Positive" case 9: sentAnal = "Very Positive" case 10: sentAnal = "Strongly Positive" default: sentAnal = "Unknown" } return sentAnal }
您需要指定输入参数后返回的内容,这不是python。
这个:
func Print(DATA []TD, include string, exclude []string, str string) {
应该:
func Print(DATA []TD, include string, exclude []string, str string) string {
推荐读物:
http://golang.org/doc/effective_go.html#multiple-returns
http://golang.org/doc/effective_go.html#named-results
甚至全部有效