obscure implementation details
Disagree. The shape of booleans in Perl 5 is specified behaviour, and is only going to become more explicit in Perl 6.
I would instead suggest that a clearer, more maintainable version might be ($string) x ($cond ? 1 : 0)
If youíre using a ternary anyway, why would you want to throw in an x op? All that does is lose the shortcircuiting, make the code longer, and force some extraneous parens. Just do all the work using the ternary: $cond ? $string : ()
I donít find either of your original ďproblemĒ examples to be particularly onerous
Iíd never use the push version. The one with ternaries doesnít look onerous because there are so many conditional bits that you have no hope of putting it all on a single line anyway, and the lists are simpler than the conditionals, and itís highly regular, and all. I was trying to come up with an example that canít be simplified using grep.
I canít recall the exact code that led me to post the thread on perl6-users which led Larry to nudge me in this direction, but it was a case of injecting a single list into the arguments of a one-liner join, where precedence forced me to parenthesise things, so the version using the ternary absolutely was more ornery than it should have been. With such a short list, itís more annoying than the example I gave in the root node, because nothing really helps Ė putting it on a single line makes it unwieldy, breaking it into multiple lines makes it breathlessly verbose, using an extra temporary looks hackish. Sticking an x!! wouldnít have been ideal, but would certainly read better than all the alternatives.
Makeshifts last the longest.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
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:
Outside of code tags, you may need to use entities for some characters:
- 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.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||