Is there a technical reason why that piece of DWIMmery would be considered harmful at some edge case?
I can think of one. Whether it is right or not is another matter :)
There would be times when you wanted to return to your position in the hash.
If the iterator (or hashkey pointer) was reset everytime the program left a control loop, you would have to save it in a variable and then restore it each time you went into another control structure.
I don't see this as being a bad thing - other languages do it like this. I also don't know why it wasn't done this way rather than the way it currently is.
Having said that, I have found this to be a problem before, but some careful data structure design worked around it just fine.
____________________
Jeremy
I didn't believe in evil until I dated it.
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, details, 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, summary, 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: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.