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Documentation of class 'PhoneticStringUtilities::ExtendedSoundexStringComparator':

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Class: ExtendedSoundexStringComparator (private in PhoneticStringUtilities

This class is only visible from within PhoneticStringUtilities.

Inheritance:

   Object
   |
   +--PhoneticStringUtilities::PhoneticStringComparator
      |
      +--PhoneticStringUtilities::ExtendedSoundexStringComparator

Package:
stx:libbasic2
Category:
Collections-Text-Support
Owner:
PhoneticStringUtilities

Description:


There are many extended and enhanced soundex variants around;
here is one, called 'extended soundex'. It is destribed for example in
http://www.epidata.dk/documentation.php.
An author or origin is unknown.

The number of digits is increased to 5 or 8;
The first character is not used literally; instead it is encoded like the rest.
This might have a negative effect on names starting with a vovel, though.

Overall, it can be doubted if this is really an enhancement after all.


Instance protocol:

api
o  phoneticStringsFor: aString
generates both an extended soundex of length 5 and one of length 8
usage example(s):
     self basicNew phoneticStringsFor:'müller'  #('87900' '87900000')  
     self basicNew phoneticStringsFor:'miller'  #('87900' '87900000')   
     self basicNew phoneticStringsFor:'muller'  #('87900' '87900000')    
     self basicNew phoneticStringsFor:'muler'   #('87900' '87900000')
     self basicNew phoneticStringsFor:'schmidt'    #('38600' '38600000')
     self basicNew phoneticStringsFor:'schneider'  #('38690' '38690000')
     self basicNew phoneticStringsFor:'fischer'    #('23900' '23900000')
     self basicNew phoneticStringsFor:'weber'      #('19000' '19000000')
     self basicNew phoneticStringsFor:'meyer'      #('89000' '89000000')
     self basicNew phoneticStringsFor:'wagner'     #('48900' '48900000')
     self basicNew phoneticStringsFor:'schulz'     #('37500' '37500000')
     self basicNew phoneticStringsFor:'becker'     #('13900' '13900000')
     self basicNew phoneticStringsFor:'hoffmann'   #('28800' '28800000')
     self basicNew phoneticStringsFor:'schäfer'    #('32900' '32900000')

private
o  translate: aCharacter
use simple if's for more speed when compiled



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