Your observations about similarities are true!
BUT there are certain differences in Perl.
- arrays are ordered, hashes aren't
- two indices with distance n mean the array has >n elements, the hash only >2
- array lookup and memory consumption is far better for same number of elements
These differences in nature lead to different operators, something like push
doesn't make much sense for hashes without order. How do you find the highest index/key of an array?
And sometimes, e.g. when dealing with sparse matrices, arrays are simulated via hashes.
( addicted to the Perl Programming Language)
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:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- 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
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||