关键词搜索与负面关键词

huangapple go评论95阅读模式
英文:

Keyword search with negative keywords

问题

我对Go语言中关键字搜索的一个简单问题有疑问。

我想使用正向和负向关键字来搜索一个字符串。

以下是我的代码:

func keyword(itemTitle string, keywords string) bool {
    splits := strings.Split(keywords, ",")
    for _, item := range splits {
        item = strings.TrimSpace(item)

        fmt.Println(strings.ToUpper(itemTitle))
        fmt.Println(strings.ToUpper(item))

        if strings.Contains(item, "-") {
            item = item[1:]
            if strings.Contains(strings.ToUpper(itemTitle), strings.ToUpper(item)) {
                return false
            }
        }

        item = item[1:]
        fmt.Println(strings.ToUpper(item))

        if strings.Contains(strings.ToUpper(itemTitle), strings.ToUpper(item)) {
            return true
        }
    }

    return false
}

这是我的搜索方法:

func TestKeyword(t *testing.T) {
    test1 := "Pokemon Nintendo Switch Cool Thing"
    keywordTest1 := "+pokemon,-nintendo"

    if keyword(test1, keywordTest1) {
        fmt.Println("matched")
    } else {
        fmt.Println("test")
    }

    test2 := "Pokemon Cards Cool"

    if keyword(test2, keywordTest1) {
        fmt.Println("matched")
    } else {
        fmt.Println("test")
    }
}

我的测试用例是:

我明白为什么它不起作用,因为"+amd"是切片中的第一个元素,当然会返回true,而不会测试其他的"-radeon",但我有点困惑该怎么办。

给出的输出是:

matched
matched

期望的输出是:

test
matched
英文:

I have a simple question about keywords searching in a Go.

I want to search a string using positive and negative keywords

func keyword(itemTitle string, keywords string) bool {
	splits := strings.Split(keywords, ",")
	for _, item := range splits {
		item = strings.TrimSpace(item)

		fmt.Println(strings.ToUpper(itemTitle))
		fmt.Println(strings.ToUpper(item))

		if strings.Contains(item,"-") {
			item = item[1:]
			if strings.Contains(strings.ToUpper(itemTitle), strings.ToUpper(item)) {
				return false
			}
		}

		item = item[1:]
		fmt.Println(strings.ToUpper(item))

		if strings.Contains(strings.ToUpper(itemTitle), strings.ToUpper(item)) {
			return true
		}
	}

	return false
}

heres my searcher method

func TestKeyword(t *testing.T) {
	test1 := "Pokemon Nintendo Switch Cool Thing"
	keywordTest1 := "+pokemon,-nintendo"

	if keyword(test1, keywordTest1) {
		fmt.Println("matched")
	} else {
		fmt.Println("test")
	}

    test2 := "Pokemon Cards Cool"

	if keyword(test2, keywordTest1) {
		fmt.Println("matched")
	} else {
		fmt.Println("test")
	}
}

my test cases
i understand why its not working because +amd is the first in the slice and its ofc going to return true and not test any of the other like -radeon but im just kinda stumped on what todo.

Output given

matched
matched

Expected Output

test
matched

答案1

得分: 0

我更新了你的搜索功能,但保留了签名。

func keyword(itemTitle string, keywords string) bool {
    a := strings.ToUpper(itemTitle)
    b := strings.ToUpper(keywords)
    keys := strings.Split(strings.Replace(b, "-", " ", -1), ",")
    for _, key := range keys {
        key = strings.TrimSpace(key)
        if strings.Contains(a, key) {
            return true
        }
    }
    return false
}

我还更新了你的测试函数,添加了一个通过的测试和一个失败的测试,以查看它的工作原理。

func TestKeyword(t *testing.T) {
    test1 := "Pokemon Nintendo Switch Cool Thing"
    keywordTest1 := "+pokemon,-nintendo"

    if keyword(test1, keywordTest1) {
        t.Log("matched")
    } else {
        t.Fail()
    }

    test2 := "Pokemon Cards Cool"

    if keyword(test2, keywordTest1) {
        t.Log("matched")
    } else {
        t.Fail()
    }
}

关于第二个测试失败的问题,如果需要,你可以通过正则表达式将带有+的关键字传递,以获取只包含字母数字字符的关键字。

英文:

I updated your search function but kept the signature

func keyword(itemTitle string, keywords string) bool {
	a := strings.ToUpper(itemTitle)
	b := strings.ToUpper(keywords)
	keys := strings.Split(strings.Replace(b, "-", " ", -1), ",")
	for _, key := range keys {
		key = strings.TrimSpace(key)
		if strings.Contains(a, key) {
			return true
		}
	}
	return false
}

And updated your test function with a passing test and a failed one to see how it works.

func TestKeyword(t *testing.T) {
	test1 := "Pokemon Nintendo Switch Cool Thing"
	keywordTest1 := "+pokemon,-nintendo"

	if keyword(test1, keywordTest1) {
		t.Log("matched")
	} else {
		t.Fail()
	}

	test2 := "Pokemon Cards Cool"

	if keyword(test2, keywordTest1) {
		t.Log("matched")
	} else {
		t.Fail()
	}
}

Regarding the second test failing with a keyword with + on it, you could pass that through a regex to get only alphanumeric characters, if required.

huangapple
  • 本文由 发表于 2021年12月10日 04:29:54
  • 转载请务必保留本文链接:https://go.coder-hub.com/70296328.html
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