Method: When::TM::CalDate#cweek

Defined in:
lib/when_exe/inspect.rb

#cweek(d = 0) ⇒ Numeric

暦週

Parameters:

  • d (Integer) (defaults to: 0) —

    日付が‘年月日’でない表現のための桁位置変更指示(大きいほうに位置をずらす)

Returns:

  • (Numeric) —

    自身の「暦週」

Raises:

  • (IndexError) 


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# File 'lib/when_exe/inspect.rb', line 1194

def cweek(d=0)
  [1,0,-1].each do |i|
    start = ((self + PeriodDuration.new(i, YEAR-d)).floor(YEAR-d,DAY) + PeriodDuration.new(4, DAY)) & Residue.new(0,7,-1)
    return ((to_i - start.to_i).div 7) + 1 if self >= start
  end
  raise IndexError, 'Cannot decide year number'
end