I wasn't being sarcastic about using the call_onobj function. I wouldn't have written that specific set of function calls because I don't use Gtk2. I used something similar in some code just yesterday. This is off the top of my head and I didn't use your specific function but it did the same sort of thing. In my case I'm effectively generating my functions and parameters by parsing a file and returning a list of events and parameters for them. It so happens that the general technique of writing your function calls as data is really convenient when parsing stuff. I can take one pass over the data to get my list of events and then just execute the events as code.
[ 'UseFont', 0 ],
[ 'SetDots', 52 ],
[ 'SetScanLines', 300 ],
[ 'AdjustDots', 15 ],
[ 'AdjustScanLines', 2 ],
[ 'Text', 'This is some text to be added to the output ] );
The original query was on a series of hardcoded method calls all onto the same object. This is more general because now the method calls are mutable as data. It benefits two ways - by being more powerful and by not being a mimic for an unrelated sort of thing. I read $obj->UseFont( 0 )->SetDots( 52 )->SetScanLines( 300 )->AdjustDots( 15 )->AdjustScanLines( 2 )->Text( '...' ) as more likely to be a deep object access than anything else. In general, I suspect that I will continue to be surprised when someone writes the preceding and they are all really just successive method calls on the $obj object. I grant that some uses of whitespace can make the chained-self intent more visible to someone who expects that. I don't think it helps anyone who didn't already have this technique in mind. I also think that no only I not be helped, that I will be hindered. The technique with this syntax is a dead end in perl5 and I would like it for people to write concise, clear code without it.
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.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||