Revision history for Perl extension String::Trigram.

0.01 Fri Nov 16 19:37:41 2001

• original version; created by h2xs 1.21 with options -AX Trigram

0.02 Wed Jan 16, 2002

• Added use locale to methods getSimilarStrings() and _trigramify() on kind suggestion by Oleg Bartunov. This should make keepOnlyAlNums and ignoreCase work correctly with non-ascii characters.

0.1 Sat Mar 8, 2003

• moved use locale to top of package
• Added method extendBase which adds strings to base of comparison any time after object has been created (like reInit, but it does not delete the old base of comparison).
• getSimilarStrings has now optional parameters warp and minSim to change those temporarily
• Implemented one internal method in C (makes it somewhat faster)
• Made module faster in other places
• Extended module to be 1-gramable, 2-gramable, 4-gramable etc.
• Set default padding to n - 1 for (n from n-gram), i.e. 2 for 3-grams, 3 for 4-grams etc. (this changes the default behaviour of a padding of 1 for trigrams!!!)
• debogustified module in some places
• removed one bug which should have occurred extremely rarely and only, when feeding the same string(s) several times to the Trigram object, but nevertheless ...
• made compare function save against getting no parameters (croaks now)
• made getBestMatch return 0 instead of -1, when no match is found 0.11 Fri Jul 25, 2008
• Fixed bug in reInit()