rors.org - comments

#48: Dejan Simic on 'Editing /etc/hosts on Mac OS'

Dejan Simic — Sun, 11 Oct 2009 20:19:05 +0000

Cool tip, thanks!

#33: Daniel Cadenas on 'Editing /etc/hosts on Mac OS'

Daniel Cadenas — Wed, 07 Oct 2009 09:55:56 +0000

And another related bash tip: if you want to see /etc/hosts contents just type @ and then tab

#32: Dejan on 'My pet is growing'

Dejan — Thu, 15 Jan 2009 14:06:10 +0000

Thank you Chris :)

#31: Chris on 'My pet is growing'

Chris — Thu, 15 Jan 2009 10:54:35 +0000

Congratulations, Dejan, those are impressive numbers! And it sounds like you enjoy your pet, too.

#30: Konrad on 'Nested Ternary operator'

Konrad — Wed, 19 Nov 2008 10:01:05 +0000

This is a very interesting way of coding a switch, and does allow you to use boolean expressions rather than constants, but you need to realize that this will be much slower than a switch.

Since this is one line, one statement, it will need to process the entire statement before continuing with the execution of the rest of the program.

If efficiency of code is not a high priority or you really need to user a boolean expression for a switch then by all means use the example.

Good example though.

#27: Dejan on 'Alternatives'

Dejan — Wed, 20 Aug 2008 08:40:46 +0000

No, I haven’t actually tried merb.

Post is kind of a joke that I’d probably switched if I would tried it :) And, as you know, choosing any alternative technology over mainstream has its own advantages but also has its price(learning curve, smaller community(which leads to many bad things), managers don’t like it…)

#26: Srdjan Pejic on 'Alternatives'

Srdjan Pejic — Tue, 19 Aug 2008 13:45:50 +0000

Ne znam da li smijem ostavljati komentare na srpskom. Zbog toga cu prevesti na engleski ispod komentara.

Nego, da te pitam, zasto ne bi koristio Merb? Da li ima tehnickih razloga ili je samo nesto sto ne preferiras?

English:

Why not use Merb? Is it a technical reason or a preference?

#24: roger degree search on 'andand'

roger degree search — Wed, 30 Jul 2008 14:50:06 +0000

It is true. This is one of the nicest ‘gems’ I’ve run into for normal use.

#23: Eric on 'Nested Ternary operator'

Eric — Fri, 18 Jul 2008 18:52:07 +0000

Well, now that I think about it, he had something worse!

$mySort = ($sort==1) ? ‘avg_rating ’.$sortOrder : (($sort==2) ? ‘solved ’.$sortOrder : (($sort==4) ? ‘articletype ’ .$sortOrder : ‘question ’.$sortOrder));

#22: Eric on 'Nested Ternary operator'

Eric — Fri, 18 Jul 2008 18:32:43 +0000

It’s pretty interesting! I would not use it, though.
I’m currently updating a system and the developer that originally wrote the code had something like this:

var = col==0? person.getFirstName(): col==1? person.getLastName(): col==2? person.getAge(): col==3? person.getAddress(): null;

Everything in one line! That’s almost impossible to read.
This blog entry helped me a lot.
We just need to remember that the machine can read the code anyways, but the average human being needs it more simple and easy to read.

#21: Karl on 'Alternative join and split in Ruby'

Karl — Thu, 10 Jul 2008 12:32:03 +0000

Just my opinion here, but I don’t like either of those conventions. To me they are not clear. If someone else was picking up my code, they might find those a bit confusing. The split nomenclature is farily common among several languages.

But I will give you that they are concise.

#19: Dejan on 'andand'

Dejan — Mon, 24 Mar 2008 17:04:30 +0000

Cool, thanks! :)

#18: Reg Braithwaite on 'andand'

Reg Braithwaite — Mon, 24 Mar 2008 16:45:37 +0000

Thank you! I hope you don’t mind my quoting your post on andand

#17: Greg Weber on 'Self or default if empty, DRY way'

Greg Weber — Mon, 24 Mar 2008 15:28:21 +0000

gem install methodchain


require 'rubygems'
require 'methodchain'

person.phone.and {not empty?} || "N/A"

#16: Mark Wilden on 'Eleventh'

Mark Wilden — Mon, 24 Mar 2008 11:59:19 +0000

Actually, it’s the American sportscaster style that makes the podcast unlistenable for me. This is when they use emphasis and pauses for no reason.

///ark

#14: Sokolov Yura on 'Self or default if empty, DRY way'

Sokolov Yura — Mon, 24 Mar 2008 09:56:36 +0000

I use this:
somewhere in initialization

class Object
  def or(v)
    blank? ? v : self
  end
end

in code

person.phone.or(“N/A”)

#12: Arlen on 'Eleventh'

Arlen — Mon, 24 Mar 2008 00:04:40 +0000

Excellent! Thank you. Admittedly the strong American accent on matz’ name is quite painful, but otherwise this is excellent to listen to.

#11: Dejan on 'Eleventh'

Dejan — Sun, 23 Mar 2008 23:41:15 +0000

I’ve found alternative link, so check again, it should work now. Thanks for reporting.

#10: Arlen on 'Eleventh'

Arlen — Sun, 23 Mar 2008 23:24:15 +0000

As an aside, the link “Listen” doesn’t work. Any hints?

#9: Arlen on 'Eleventh'

Arlen — Sun, 23 Mar 2008 23:23:54 +0000

Incredible!

#8: Eric Anderson on 'Self or default if empty, DRY way'

Eric Anderson — Sun, 23 Mar 2008 21:28:36 +0000

I agree with Craig 100%. The code it’s obvious and I would much prefer the non-DRY obvious code compared to the mentally complex DRY code. The “default_to” method sounds like a great idea to get the advantages of both (DRY and obvious).

#7: Craig on 'Self or default if empty, DRY way'

Craig — Sun, 23 Mar 2008 20:49:00 +0000

This seems like “clever” code. Seeing it, I would need to open up IRB to figure out what it does. On the otherhand, person.phone.blank? ? person.phone : “N/A” is obvious. If you’re really obsessed with DRY, create a method default_to for Object so you have person.phone.default_to(“N/A”)

#6: coderrr on 'Self or default if empty, DRY way'

coderrr — Sun, 23 Mar 2008 19:05:19 +0000

or better…

s =~ /.+/m ? $& : ‘N/A’

#5: coderrr on 'Self or default if empty, DRY way'

coderrr — Sun, 23 Mar 2008 19:01:18 +0000

w/o need for andand how about:

s =~ /(.+)/m ? $1 : ‘N/A’