It returns null if the source string is null or empty.
如果源字符串是null或空，则将返回null。
Position 0 is the first character in the source string.
在源字符串中，位置0是第一个字符。
Position 1 is the first character in the source string.
位置1是源字符串中的第一个字符。
If the source string is null or empty, then 0 is returned.
如果源字符串是null或空，则将返回0。
The Substring function will extract text from a source string.
Substring函数将从源字符串提取文本。
Enter the parameters required to format the source string data.
输入格式化源字符串数据所需的参数。
Based on the specified delimiter, the source string is divided into sections.
根据指定的分隔符，源字符串被划分为几个部分。
It returns a null if no match is found, or if the source string is null or empty.
如果没有发现匹配项或源字符串是null或空，则返回null。
Determines whether the specified source string ends with the specified suffix.
确定指定的源字符串是否以指定的后缀结尾。
Determines whether the specified source string starts with the specified prefix.
确定指定的源字符串是否以指定的前缀开头。
The function strncpy (3) can also be used to copy only a part of the source string into the destination.
函数strncpy(3)还可以用来仅把源字符串的一部分复制到目标中。
The Substring function uses a delimiter and index to determine what text to extract from the incoming source string.
Substring函数使用一个分隔符和索引来判断要从进入的源字符串提取哪些文本。
When doing that, the number of characters to be copied is usually computed based on information about the source string.
在执行这个操作时，要复制的字符的数目通常是基于源字符串的相关信息来计算的。
Searches for the specified character and returns the zero-based index of the last occurrence within the entire source string.
搜索指定的子字符串，并返回整个源字符串内最后一个匹配项的从零开始的索引。
Searches for the specified substring and returns the zero-based index of the last occurrence within the entire source string.
搜索指定的字符，并返回整个源字符串内最后一个匹配项的从零开始的索引。
Searches for the specified substring and returns the zero-based index of the first occurrence within the entire source string.
搜索指定的字符并返回整个源字符串内第一个匹配项的从零开始的索引。
This function attempts to match and return a specific occurrence of a pattern that is defined by the regular expression against the source string.
此函数试图匹配并返回正则表达式针对源字符串定义的模式的特定发生项。
The function strncpy(3) also doesn't NUL-terminate its destination if the source string is at least as long as the destination; this can cause havoc later.
如果源字符串至少和目标一样长，那么函数strncpy(3)还不会使用NUL 来结束字符串；这可能会在以后导致严重破坏。
Before using a translation provided by WebSphere translation Server, it is probably a good business practice to verify that the translation actually parallels the source string.
在使用WebSphereTranslationServer提供的翻译之前，验证翻译是否确实与源字符串匹配或许是个很好的业务实践。
Searches for the specified character and returns the zero-based index of the first occurrence within the section of the source string that extends from the specified index to the end of the string.
搜索指定的子字符串，并返回源字符串内从指定的索引位置到字符串结尾这一部分中第一个匹配项的从零开始的索引。
If the optional start is specified, it indicates the character position in the source-string at which the search is to begin.
如果指定了可选的起始位置，则表明它是源字符串中开始进行搜索的字符位置。
If the optional start is specified, it indicates the character position in the source-string at which the search is to begin.
如果指定了可选的起始位置，则表明它是源字符串中开始进行搜索的字符位置。
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