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dangerous methods indicated with !-terminated names receiver-changing effects data, normalizing Date class constructors date operations package Date.civil Date.new Date.today dates arithmetic conversion methods format specifiers formatting methods iterating over range object, instantiation parse constructor query methods datetime civil constructor conversion methods formatting methods iterating over range new constructor now constructor object, instantiation parse constructor query methods DateTime class constructors datetime objects sec method second method Daylight Saving Time day-of-week method debugging with pass-through overrides def keyword local scope def/end keywords default object, 2nd as message receiver ...
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