如果找到字符串，可以使用indexOf，返回的结果将不同于-1
In this tutorial, you'll learn the best way to check whether a Python string contains a substring. You'll also learn about idiomatic ways to inspect the substring further, match substrings with conditions using regular expressions, and search for substri
在JAVA中,可以使用contains()方法来判断一个字符串是否包含某个子串。示例代码如下: Stringstr="Hello World";if(str.contains("World")){System.out.println("字符串包含子串");}else{System.out.println("字符串不包含子串");} 1. 2. 3. 4. 5. 6. 7. 在上面的代码中,我们定义了一个字符串str,然后...
布林運算式是任何會傳回布林值 (true 或false) 的程式碼。 最簡單的布林運算式就只是值 true 與false。 或者,布林運算式可以是傳回值 true 或false 的方法結果。 例如,以下是一個簡單的程式碼範例,此範例會使用 string.Contains() 方法來評估某個字串是否包含另一個字串。
str_contains(PHP 8)str_contains — Determine if a string contains a given substring说明str_contains(string $haystack, string $needle): boolPerforms a cas
If the string is not found,containsreturnsfalse: Assert.assertFalse("Hey Ho, let's go".contains("jey"));Copy In the last example, “hey” is not found becauseString.containsis case-sensitive. Assert.assertFalse("Hey Ho, let's go".contains("hey")); ...
運算子 -in 就像運算子一樣, -contains 但集合位於右側。PowerShell 複製 $array = 1..6 if ( 3 -in $array ) { # do something } 變化:-in 不區分大小寫的比對 -iin 不區分大小寫的比對 -cin 區分大小寫的比對 -notin 不區分大小寫不相符 -inotin 不區分大小寫不相符 -cnotin 不相符區分...
You can check whether a text string contains a particular substring, at the start, end or anywhere within the text string. Either of these text strings can be text variables or text constants. The text comparison is case-insensitive.
publicclassSubstringInString{publicstaticvoidisSubstring(String subStr, String mainStr){intflag=0;intcounter=0; OUTER:for(inti=flag; i<subStr.length(); i = i+flag){ INNER:for(intj=0; j< mainStr.length(); j=counter ){if(subStr.charAt(i) == mainStr.charAt(j)){ count...
str_contains— Determine if a string contains a given substring 说明 str_contains(string $haystack, string $needle): bool Performs a case-sensitive check indicating if needle is contained in haystack. 参数 haystack The string to search in. needle The substring to search for in the haystack....