Is there a Monk who'll help my perling-style?
In my scripts I often use ternary operators of the kind:
$Target = Function($Params) ? Function($params) : $DefaultValue;
This example is simple enough. But if Function() takes multiple parameters, and they are themselves complex (e.g. using dereferencing or array / hash indexing), there is a risk that the two invocations may be subtly mis-typed; not to mention side-effects from calling the function multiple times.
My question is - Is there a way to simplify this construct? Is there something I can use between the '?' and ':' that gets the result from imediately left of the '?' ?
On possible solution using an intermediate result:
$Target = ($temp = Function($params)) ? $temp : $DefaultValue;
breaks up the elegant left-to-right sequence of the code.
And an elegant sequence help understanding and maintainability.
-
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.
|
