可以使用+操作符连接多个字符串字面值。
To concatenate multiple String literals, use the + operator.
如果到达输入字符串的末尾，弹出所有操作符并添加到结果字符串。
If the end of the input string is found, pop all operators and append them to the result string.
如果字符是个闭括号(closingparenthesis)，在遇见开括号前，弹出所有操作符，然后把它们添加到结果字符串。
If the character is a closing parenthesis, pop all operators until you reach an opening parenthesis and append them to the result string.
您可以随意将字符串传递给 preg_quote()来自动转义它找到的所有regex操作符，如第 1行所示。
Optionally, you can pass a string to preg_quote() to automatically escape any regex operator it finds, as in line 1.
很多Python程序员都感觉用来格式化字符串的这个内置的%操作符太有限了，这是因为。
Many Python programmers felt that the built-in % operator for formatting strings was too constrained, because.
当要编写规则处理多个相似的设备时，udev可以使用类似C语言的printf函数中的字符串替换操作符。
When writing rules which will potentially handle multiple similar devices, udev's printf-like string substitution operators are very useful.
如果不喜欢使用这么长的字符串连接语句，另一种方法是使用字符串格式操作符，可以使用下面这样的表达式。
If you prefer not to use a long string concatenation statement like this, an alternative is to use the string formatting operator which enables you to have an expression like.
例如，Python有一个内置的“ % ”操作符，它就执行格式化操作(“ % ”前面的参数就是指定的格式)，因此要确保攻击者不会控制这个格式，也就是说使用常量作为字符串的格式。
For example, Python has a built-in "%" operator that does formatting (the argument before "%" is the format), so make sure the attacker can't control the format, say by making it a constant.
regex操作符 |（竖线）表示备选项，因此this|that匹配字符串 this或字符串 that。
The regex operator | (vertical bar) is the alternation, so this|that matches either the string this or the string that.
在使用like 操作符时，在Value框中直接输入字符串值并使用 % 字符作为文本模式的通配符。
To enter a String value using the like operator, type directly into the value field using the % character as a wild card for a text pattern.
在使用equals操作符时，在Value框中直接输入字符串值。
To enter a String value using the equals operator, type directly into the value field.
注意那些围绕参数名的引号不是必需的（因此通常被省略掉），因为操作符=>将它左边的裸单词（barewords）看作是被引用的字符串。
Note that quotes around the parameter names are not required (and are therefore commonly omitted), because the => operator forces barewords on its left to be treated as quoted strings.
一个值为包括空格的字符串的C表达式，代表定义包含已初始化的只读数据段的汇编程序操作符。
C expression whose value is a string, including spacing, containing the assembler operation to identify the following data as read-only initialized data.
“matches”操作符只能应用于协议或者字符串类型的协议字段。
The "matches" operator is only implemented for protocols and for protocol fields with a text string representation.
这种操作符，会返回字符串中从第『n』个到第『m』个的字符，包含开头的第『n』个，但不包含末尾的第『m』个。
The operator [n:m] returns the part of the string from the "n-eth" character to the "meth" character, including the first but excluding the last.
这种操作符，会返回字符串中从第『n』个到第『m』个的字符，包含开头的第『n』个，但不包含末尾的第『m』个。
The operator [n:m] returns the part of the string from the "n-eth" character to the "meth" character, including the first but excluding the last.
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