Finds the first sub-string within the passed string which matches the target regular expression
A string against which the regular expression is matched
An optional index with the string at which to start matching
Table — the first match
This method compares the target regular expression against the characters comprising the passed string and returns a table whose keys indicate the location of the first sub-string whose characters match the regular expression.
The table contains just two keys, begin and end, whose values are the indexes delimiting the matched sub-string within the source string. If there is no match, search() returns
A second, optional parameter may be passed to the method: the index within the passed string at which to begin the search for pattern matches. If this parameter is not provided, the search commences at the start of the string.
Compare this method with capture() which returns all the matched sub-strings found within the source string.