This sort of mistake is one of the reasons we're thinking about distinguishing two different levels of pattern match in Perl 6, which we're currently calling "token" matching and "rule" matching, for lack of better names. Rule matching does scanning while token matching doesn't. When a token is matched from within a rule it has to match at the current location, and it's the embedding of the token within the rule match that allows other stuff to match after the token. By itself, a token must match an entire string (maybe with surrounding whitespace). So eventually we should have a way to just ask if the string matches a "num" or "int" pattern of some sort by pretending the token matcher is a subroutine or method of some sort. Perhaps somewhere in the relationship between tokens and rules we also can manage whitespace without scattering modifiers everywhere.
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|