Disqus - Latest Comments for steveharris

Re: Implementing a great final project

steveharris — Thu, 17 Jan 2008 14:27:18 -0000

I'm deploying the RESTful acts_as_authenticated, which (if I'm understanding what I'm seeing) uses a cookie.

I'm following Alameda's example (chapter 6) -- in his controllers, he restricts every request to only the records "owned" by the current_user, e.g.:

def index
exercises = current_user.exercises.find(:all)
...
end

But this appears to violate the REST statelessness principle.

Sigh. Back to the drawing board...

- Steve

Re: Assignment 4; due Nov. 11

steveharris — Fri, 02 Nov 2007 09:57:33 -0000

fta ???

Re: Assignment 4; due Nov. 11

steveharris — Thu, 01 Nov 2007 17:00:12 -0000

For the quiz:

- you just want us to fill out the table and email it to you?
- as an attachment? in the body?
- if, for a given line, the foreign key is in standard Rails format, just leave that column blank?
- ok to abbreviate "habtm"?

Re: Your one-liners?

steveharris — Thu, 01 Nov 2007 11:26:09 -0000

Proposed 1-liner:

Hash#invert returns a new hash where the keys of the new hash are the values of the old hash, and vice-versa. If the original hash contains multiple keys that map to the same value, the new hash will contain a single entry for that value (now the new key) and which of the original keys becomes the new value is not predictable.

Write a one-liner which inverts a hash, but where each value in the new hash is an array containing all the keys of the original hash.

Now, write a one-liner like the above, but if there is only one (new) value, it should be a simple value, not an array.

- Steve

Re: D’oh! My numlock issue was . . .

steveharris — Thu, 18 Oct 2007 13:47:41 -0000

Nope. When you go to disqus and enter text into their input box, they preview it for you -- in the preview (and on their site) the backslashes appear, but here they are clobbered.

PS: Any special plans for Halloween lecture?

Re: D’oh! My numlock issue was . . .

steveharris — Thu, 18 Oct 2007 13:43:50 -0000

I'm trying one more time, but this time I'm posting from http://e168f07.disqus.com/ (rather than http://e168f07.7fff.com/) -- I hope the backslashes will be preserved this way.

Here's the regex in extended format:

regex = /
\b([aeiou]) # vowel at start of word
| # or
([^aeiouq])(u)\B # non-(vowel-or-q) followed by 'u' (not at end of word)
| # or
([^aeio]|qu)([aeio])\B # non-vowel or 'qu' followed by (non-u) vowel (not at end of word)
/ix

And here it is in a single line (paste into irb):

regex=/\b([aeiou])|([^aeiouq])(u)\B|([^aeio]|qu)([aeio])\B/i

t = "did you know that if you mix equal parts of gasoline and frozen orange juice concentrate you can make napalm"

t.gsub(regex){ ($2||$4||"") + "UB" + ($1||$3||$5) }

Re: D’oh! My numlock issue was . . .

steveharris — Thu, 18 Oct 2007 13:35:45 -0000

Drat. all the backslash chars have been ripped out. Here's the one-liner again, but replace each Z with a back-slash:

regex=/Zb([aeiou])|([^aeiouq])(u)ZB|([^aeio]|qu)([aeio])ZB/i

Re: D’oh! My numlock issue was . . .

steveharris — Thu, 18 Oct 2007 13:30:28 -0000

New subject: regex for ubbi dubbi

(I originally posted this as a "Start New Topic" on http://e168f07.disqus.com/, and it appeared there, but it never showed up here or on any RSS feed, so I am postin it again).

# Here's a regex and gsub for doing ubbi dubbi transformations.
#
# Features:
# - only inserts UB before first of a sequence of vowels
# - does not insert UB before single final vowel (silent vowel)
# - does not insert UB between 'q' and 'u'
# - inserts upper-case UB for readability
#
# Here's the regex in "extended" notation (sigh -- the in-line comments should all be indented so they line up, but when I enter them into this blog comment system, all the spaces are squeezed out -- use your imagination!)

# here's the same regex in one line (easier to paste into irb):

regex=/\b([aeiou])|([^aeiouq])(u)\B|([^aeio]|qu)([aeio])\B/i

# and here's the string and the gsub:

t = "did you know that if you mix equal parts of gasoline and frozen orange juice concentrate you can make napalm"

t.gsub(regex){ ($2||$4||"") + "UB" + ($1||$3||$5) }

# explanation: ($2||$4||"")
#
# $2 refers to whatever was matched by the 2nd paren group of the regex. If the match did not involve the 2nd paren group (e.g., if it was a match for a vowel at the start of a word), then $2 is nil.
#
# So, the chain of logical short-circuit ORs will return either:
#
# - $2 -- the non-(vowel-or-q) that preceded a 'u'
# - $4 -- the non-vowel-or-qu that preceded a (non-u) vowel
# - "" (the empty string)

Re: Instances of the class Class

steveharris — Tue, 16 Oct 2007 11:21:42 -0000

I don't recall exactly, late yesterday afternoon. My post appeared almost immediately, both on e168f07.disqus.com and on e168f07.7fff.com -- it just takes a while for Google reader to get the feed.

What confused me was seeing (in Google Reader) posts on the old feed, and none on the new (disqus) feed --I wondered if it was working. But now I see -- followups to old posts remain with the old feed, and new posts go to disqus.

I hear the Sox have a new slugger named "Casey" ;-)

Re: Instances of the class Class

steveharris — Mon, 15 Oct 2007 15:24:54 -0000

Well, how about that, my comment just showed up!
Guess I'm just impatient. :-)

Re: Instances of the class Class

steveharris — Mon, 15 Oct 2007 15:14:04 -0000

Hi John,

None of the more recent comments have appeared in e168f07.disqus.com, or in the RSS feed.

- Steve