Perl has Readonly and constant which provide the same functionality.
They're not the same thing. const is not about constructing immutable values it's about being able to declare that "in the following code, the contents of this variable should not be modified, if you see me trying to modify it, throw a compile-time error".
It's also about making a promise in your API which the caller knows will be kept because it has been checked at compile-time. Of course you can force the compiler to let you break the promise using a cast but it can't happen as an unanticipated side-effect or typo.
-
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.
|
