I need slices of varying length from the input array. There's currently no way to express this succintly - the splice solution is merely the least unsatisfactory given my biases. It's not good, no, but the alternative is even worse.
The other approach would have been to loop over the letter array and manually compare previous and current property. Conceptually, that's a very basic form of pattern matching - so why not use the native pattern matching mechanism Perl already offers?
The problem is that the regex engine only works against characters in a string - if it was possible to run against any ordered sequence of elements, regardless of representation (whether that be the traditional characters in a string or elements in an array or maybe something else completely like records in a database), I wouldn't need to go through mapping to a string first. Rather than get a series of strings out of the match, I'd get exactly the series of slices I'm building manually here.
Since I can only have the former, I have to somehow construct the latter from that. And a series of slice lengths to take from an array is not elegantly expressible in current Perl idioms.
Makeshifts last the longest.
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.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||