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courses:mapreduce-tutorial:perl-api [2012/01/27 17:45]
straka 		courses:mapreduce-tutorial:perl-api [2012/01/27 17:48]
straka
Line 69: Line 69:
     * ''$values%%->%%value()'' -- returns the current value, undef if there is any.     * ''$values%%->%%value()'' -- returns the current value, undef if there is any.
     * ''$values%%->%%next()'' -- advance to next value. Returns true if there is any, false otherwise.     * ''$values%%->%%next()'' -- advance to next value. Returns true if there is any, false otherwise.
-    * At the beginning there is no current value, the first value should be obtained by calling 'next'.+    * At the beginning there is no current value, the first value should be obtained by calling ''next''.
   * ''sub reduce($self, $key, $values, $context)'' -- the variable ''$content'' has following methods:   * ''sub reduce($self, $key, $values, $context)'' -- the variable ''$content'' has following methods:
     * ''$content%%->%%write($key, $value)'' -- output the (''$key'', ''$value'') pair     * ''$content%%->%%write($key, $value)'' -- output the (''$key'', ''$value'') pair

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