http://tfletcher.com/lib/double_metaphone.rb
Adapted from the PHP version. There’s at least one person looking for
it:
http://groups.google.com/group/comp.lang.ruby/search?group=comp.lang.ruby&q=double+metaphone
Bug reports/fixes welcome!
I do have one comment though: perhaps have the key be a symbol instead
of a string, since we’re probably not gonna alter it. E.g.
DoubleMetaphone[“foo”] => [:F, nil]
It may just be a personal preference, though.
Cheers,
Daniel
Tim F. wrote:
http://tfletcher.com/lib/double_metaphone.rb
Adapted from the PHP version. There’s at least one person looking for
it:
Very cool! Maybe cook up a gem?
I’ve played with it for a few minutes, and look!
require ‘double_metaphone’
module SpellChecker
def self.words
@words ||= {}
end
def self.add_word(word)
word.downcase!
raise ArgumentError unless word =~ /^[a-z]+$/
words[word.to_sym] = DoubleMetaphone[word]
end
def self.valid? word
words.has_key? word.to_sym
end
def self.check(word)
word.downcase!
if valid? word
puts "`#{word}' is valid"
else
puts "`#{word}' is invalid. did you mean one of these?"
key = DoubleMetaphone[word]
words.select{|w, k| k == key}.each do |alt|
puts " * #{alt.first}"
end
end
end
end
A bit rough, but hey.
Thanks mate!
Daniel
Tim F. wrote:
As for symbols/strings, the string is already there and generated, so
might as well return it. It’s easy enough to use to_sym, if that’s what
your application needs/prefers.
The string gets GC’ed, though. If you’re going to store lots of keys, it
may be better to store them as symbols.
Cheers,
Daniel
Not sure it’s worth a gem, as it’s quite easy just to drop in.
As for symbols/strings, the string is already there and generated, so
might as well return it. It’s easy enough to use to_sym, if that’s what
your application needs/prefers.
Forgot to mention: if anyone’s looking for the regular (non Double)
Ruby metaphone, it’s at http://po-ru.com/projects/metaphone/
Not sure whether you’re referring to the function or the memoization -
is it the memo hash keys you think should be stored as symbols, or
the double_metaphone return values?
On 18/08/06, Tim F. [email protected] wrote:
Not sure it’s worth a gem, as it’s quite easy just to drop in.
As for symbols/strings, the string is already there and generated, so
might as well return it. It’s easy enough to use to_sym, if that’s what
your application needs/prefers.Forgot to mention: if anyone’s looking for the regular (non Double)
Ruby metaphone, it’s at http://po-ru.com/projects/metaphone/
Oh, that’s one of mine. Perhaps we should package Metaphone, Double
Metaphone, and Levenshtein[1] together - perhaps with Soundex[2] too.
Paul.
Tim F. wrote:
Not sure whether you’re referring to the function or the memoization -
is it the memo hash keys you think should be stored as symbols, or
the double_metaphone return values?
Both.
Cheers,
Daniel