regexFind

swordfish.function.regexFind()

Search in str for another string that matches pattern and return an integer that indicates the beginning position of the first matched substring. If no substring matches, return -1.

参数:

• str (Constant) -- A string or a string vector.

• pattern (Constant) -- An ordinary string scalar or a regular expression pattern to be searched in str. Regular expression pattern includes character literals, metacharacters, or a combination of both.

• offset (Constant, optional) -- A non-negative integer with default value of 0. This optional argument is the starting position in str to conduct the search operation. The first character in str corresponds to position 0.