Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
It never ceases to amaze me, how much more there is to learn in Perl. I've been using Perl for around 5 years and I tried to do something today and was suprised that I could not. Consider the following code...
#!/usr/bin/perl use strict; use warnings; my %hash = ( key => 'value'); my @array = (1..5); foreach $hash{key} (@array){ print "\$hash{key} is $hash{key}\n"; }
I would have assumed that $hash{key} would be a valid iterator variable but it's not. It dies with the message
syntax error at ../../hashodd.pl line 9, near "$hash{key"
Execution of ../../hashodd.pl aborted due to compilation erro

Obviously this is easy to get around and seeing I've never needed it before I guess it isn't a big deal, but I was suprised it wouldn't parse correctly.

The reason I attempted this BTW, was I had some validation routines and figured I would extend them to validate multiple values by wrapping the existing code in a forloop. (the inner code references the hash key). It's trivial to fix but is anyone else suprised by this?

-Lee

"To be civilized is to deny one's nature."

In reply to Surpised by foreach iterator limitation by shotgunefx

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



  • 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 or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

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

How do I use this? | Other CB clients
Other Users?
Others lurking in the Monastery: (1)
As of 2021-07-27 23:00 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?