Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

This hits on a difference in our "Perl views" (like "world views") that has come up before. I find aliases in Perl to be a special case and so I prefer to avoid them except in certain situations.

I guess my heuristic is to avoid using them except across very short distances. The distance between the call to bind() and the definition of sub bind is pretty big, if you look at it one way.

However, Perl's read sets a precedent that I sometimes follow and this case is close enough that I could certainly make arguments that it would an appropriate use here. But I also see two reason why someone wouldn't do this. The first is avoiding user surprise as I tried to explain briefly above (and probably failed).

To make it more concrete, we don't have (w/o using C code not built into Perl) the ability to do:

my( $name, $dob, $salary ); my @arrayOfAliases= ...( $name, $dob, $salary ); ...->bind_columns( @arrayOfAlises ); # nor my( $name, $dob, $salary ); my %colMap= ( Name => aliasOf($name), DOB => aliasOf($dob), Salary => aliasOf($salary), ); ...->bind_columns( @colMap{@colNames} ); # nor ...->bind_columns( map ... );

so using aliases in your API restricts how people can use your API. (And I don't think my last example could be used even if you allow for a module including C code.)

The second reason is "comfort" of implementation, which I see fits exactly the "not thinking of your users" problem I brought up.

In Perl4 we had globs. In Perl5 we got references. In Perl6 we'll finally get full control over aliases and so they'll finally be acceptable to me to use in more general ways (I suspect).

- tye        

In reply to Re^2: How to make Win32::API easy to use by tye
in thread How to make Win32::API easy to use by tye

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others drinking their drinks and smoking their pipes about the Monastery: (7)
    As of 2020-09-23 12:48 GMT
    Find Nodes?
      Voting Booth?
      If at first I donít succeed, I Ö

      Results (131 votes). Check out past polls.