the mug of Perl
in [Perl]
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From: ccc31807 on 30 Mar 2010 13:03 http://nostarch.com/mugperl.htm cheat sheet is here: http://nostarch.com/mugperl_big.htm The cheat sheet appears to be targeted more to the casual user rather than to the daily grind. I wondering what would appear on a cheat sheet for journeymen Perlistas. My nomination would include the ||= operator. CC
From: John Bokma on 30 Mar 2010 13:43 ccc31807 <cartercc(a)gmail.com> writes: > http://nostarch.com/mugperl.htm > > cheat sheet is here: > > http://nostarch.com/mugperl_big.htm > > The cheat sheet appears to be targeted more to the casual user rather > than to the daily grind. I wondering what would appear on a cheat > sheet for journeymen Perlistas. My nomination would include the ||= > operator. IMO ||= is used a lot in a way I wouldn't use it. On older perl I use an explicit defined test, e.g. defined $foo or $foo = 'bar'; on recent perl I use //= As for what I would put on a cheat sheet: http://johnbokma.com/perl/perl-quick-reference-card.html Note that it's outdated, and probably incomplete. I hope to have time soon to add the more recent stuff to it, and also add what is available since which version of Perl. -- John Bokma j3b Hacking & Hiking in Mexico - http://johnbokma.com/ http://castleamber.com/ - Perl & Python Development
From: Ben Morrow on 30 Mar 2010 14:21 Quoth John Bokma <john(a)castleamber.com>: > > As for what I would put on a cheat sheet: > http://johnbokma.com/perl/perl-quick-reference-card.html Hmm. My reaction to lists like that is 'isn't that just all the stuff you hold in your head?', but I guess if it isn't a cheat sheet is useful. What does 'atomic' mean wrt regex metachars? Ben
From: John Bokma on 30 Mar 2010 15:09 Ben Morrow <ben(a)morrow.me.uk> writes: > Quoth John Bokma <john(a)castleamber.com>: >> >> As for what I would put on a cheat sheet: >> http://johnbokma.com/perl/perl-quick-reference-card.html > > Hmm. My reaction to lists like that is 'isn't that just all the stuff > you hold in your head?', but I guess if it isn't a cheat sheet is > useful. I certainly don't have all that information on that cheat sheet in my head. The reason I made it was that some of the more exotic (to me) file test ops I couldn't recall which one did which, and some other stuff I had to look up when needed. Originally some notes on an index card, then I decided to type it in and print it out. And while typing it in, I decided to make it useful to more people. To be honest, after I made it and printed out my own version I've used it rarely. Can't even recall where my print out is at the moment :-). One advantage of typing stuff in like this is that you learn a lot (well, I did). I got better at Textpad after I made a similar cheat sheet: http://johnbokma.com/textpad/quick-reference-card.html > What does 'atomic' mean wrt regex metachars? "To avoid confusing, we'll call the thing with width an atom" p141, Programming Perl. -- John Bokma j3b Hacking & Hiking in Mexico - http://johnbokma.com/ http://castleamber.com/ - Perl & Python Development
From: J�rgen Exner on 30 Mar 2010 15:11
John Bokma <john(a)castleamber.com> wrote: >As for what I would put on a cheat sheet: >http://johnbokma.com/perl/perl-quick-reference-card.html > >Note that it's outdated, and probably incomplete. I hope to have time >soon to add the more recent stuff to it, and also add what is available >since which version of Perl. I find it very interesting where you put the emphasis on your sheet: 3 1/2 columns out of 5 deal with regular expressions, only 1 1/2 are actually Perl itself.. What I would include/add from my perspective: - Perl functions by name sorted by category as in perldoc perlfunc but with argument list and return value, including indication for optional arguments - Perl syntax, at least for less common constructs, e.g. modifiers - syntax (maybe by examples) for references and OO jue |