Clearing an input field causes an empty string.
清除一个输入域会导致空字符串。
The parse method returns null for an empty string input.
对于空字符串输入，该解析方法返回null。
This parameter can be an empty string or NULL, if defaults should be picked.
如果应该使用默认值，那么这个参数可以是空字符串或NULL。
Both of these methods return an empty string if the attribute doesn't exist.
如果属性不存在，那么这两种方法都将返回空字符串。
Scope: The scope to search; an empty string means search all available indexes.
scope：搜索范围；空字符串表示搜索所有可用的索引页。
In some cases, the IP address range is returned as an empty array or an empty string.
在某些情况下，IP地址范围返回为一个空数组或一个空字符串。
If the supplied string does not contain a prefix, the namespace URI is an empty string.
如果提供的字符串并不包含前缀，则对应的名称空间uri将为一个空字符串。
If you don't want a header to appear, you can simply set the value to an empty string.
如果不想让标题出现，只需将值设置为空字符串。
In all other cases where we cannot find the beginning of a tag, we return the empty string.
在无法找到标签开头的其他所有情况下，我们返回一个空字符串。
For example, Line 2 shows a check that determines if an empty string has been provided.
例如，第2行检查提供的是否是空字符串。
The previous parameter starts off with the initial value, or, in this case an empty string.
previous参数有一个初始值，在本例中，是一个空白字符串。
If you omit this parameter or pass an empty string, the default matching modes are used.
如果您忽略了此参数或传递空字符串，则将使用默认匹配模式。
Image with empty string SRC attribute occurs more than one will expect. It appears in two form.
一个sr c属性为空串的图像有两种情况。
If this value is set to null or empty string, CLP throws a JCC exception: Column not updatable.
如果将这个值设置为null或空字符串，clp会抛出JCC异常：Column not updatable。
Note that the RSS_URI constant represents the default prefix, so an empty string is used as the prefix.
注意，RSS_URI常量代表默认前缀，因此一个空字符串用作前缀。
You might be asking why the \W+ is necessary: \b is the empty string at the beginning or end of a word.
您可能会提出疑问，为什么 \W+是必需的：\b 是位于单词开头或结尾的空字符串。
If the index of the current letter is equal to the length of the string, this variable is an empty string.
如果当前字母的下标和字符串的长度相等，那么这个变量是一个空字符串。
The skip variable was set to "(empty string), so all input, including Spaces, goes to the token directive."
skip变量设置为' '(空字符串)，所以所有输入(包括空格)都转至标志伪指令。
This is different from using the empty string, which indicates that the property exists but has no value.
这与使用空字符串不同，空字符串表示属性存在但是没有值。
The rest of the expression is used to see if the value (without leading or trailing blanks) is an empty string.
表达式的其余部分用来检查值(去掉头尾的空格之后)是否是空字符串。
The second call to the read method, where you try to assign the value to the str variable, returns an empty string.
在对read方法的第二个调用中，试图把值分配给str变量，结果返回一个空的 string。
This both says I'm going to accept a parameter called tracegroups, and makes its default value the empty string.
引号中的两个字段表明，我将要接受名为tracegroups 的参数，并且它的缺省值为空字符串。
If the schema is NULL or the empty string, the procedure restores the schema to the name from where it was backed up.
如果模式是NULL或空字符串，那么这个过程采用备份时的模式名进行恢复。
This line also traps for a null value and converts it to an empty string to prevent problems during later processing.
这一行代码也会专门处理null值，它将null值转换为一个空字符串以避免后面的处理出现问题。
Also, the test in Line 13 will fail to detect an error because the result of the call will not be an empty string.
第13行中的检查也无法探测到错误，因为调用的结果不是空字符串。
If this property is omitted or defined as an empty string, the schema is not used for constructing the parameter's URI.
如果省略该属性或将其定义为空串，那么模式将不能用来构造参数的URI。
You might also consider checking for empty string values. A user could specify a blank value surrounded by double quotes.
您还可能会考虑检查空的字符串值。
Attempting to continue reading past the end of the file in this way doesn't cause an error, but returns an empty string.
在过了文件末尾之后，如果还用这种方式继续读取，并不会造成错误，只会返回空的string。
Bool empty : If the path object contains an empty string for example, path path1 " ", then this routine returns True or False.
boolempty：如果path对象包含空字符串(例如pathpath1(“ ”))，则此例程将返回True。
STD: : string root_directory : Given a path, this API would return the root directory; otherwise, it would return an empty string.
string root _ directory：在提供了路径的情况下，此api将返回根目录，否则将返回空字符串。
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