Class: Amatch::Hamming

Inherits:

Object

• Object
• Amatch::Hamming

Defined in:

ext/amatch.c,
ext/amatch.c

Overview

This class computes the Hamming distance between two strings.

The Hamming distance between two strings is the number of characters, that
are different. Thus a hamming distance of 0 means an exact
match, a hamming distance of 1 means one character is different, and so on.
If one string is longer than the other string, the missing characters are
counted as different characters.

Instance Method Summary

• #initialize ⇒ Object constructor
• #match ⇒ Object
• #pattern ⇒ Object

  call-seq: pattern -> pattern string.

• #pattern= ⇒ Object

  call-seq: pattern=(pattern).

• #similar(strings) ⇒ Object

  Uses this Amatch::Hamming instance to match Amatch::Hamming#pattern against strings, and compute a Hamming distance metric number between 0.0 for very unsimilar strings and 1.0 for an exact match.

Constructor Details

#initialize ⇒ Object

Instance Method Details

#match ⇒ Object

#pattern ⇒ Object

call-seq: pattern -> pattern string

Returns the current pattern string of this instance.

#pattern= ⇒ Object

call-seq: pattern=(pattern)

Sets the current pattern string of this instance to pattern.

#similar(strings) ⇒ Object

Uses this Amatch::Hamming instance to match Amatch::Hamming#pattern against strings, and compute a Hamming distance metric number between 0.0 for very unsimilar strings and 1.0 for an exact match. strings has to be either a String or an Array of Strings. The returned results are either a Fixnum or an Array of Fixnums respectively.

# File 'ext/amatch.c', line 1042

static VALUE rb_Hamming_similar(VALUE self, VALUE strings)
{                                                                            
    GET_STRUCT(General)
    return General_iterate_strings(amatch, strings, Hamming_similar);
}