Class: Numeric
- Inherits:
-
Object
- Object
- Numeric
- Defined in:
- lib/lafcadio/util.rb
Instance Method Summary collapse
-
#precisionFormat(precision, padDecimals = true) ⇒ Object
Returns a string that represents the numbeer to
precision
decimal places, rounding down if necessary.
Instance Method Details
#precisionFormat(precision, padDecimals = true) ⇒ Object
Returns a string that represents the numbeer to precision
decimal places, rounding down if necessary. If padDecimals
is set to false
and the number rounds to a whole number, there will be no decimals shown.
(24.55).precisionFormat( 3 ) -> "24.550"
(24.55).precisionFormat( 0 ) -> "24"
100.precisionFormat( 2, false ) -> "100"
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# File 'lib/lafcadio/util.rb', line 53 def precisionFormat(precision, padDecimals = true) str = floor.to_s if precision > 0 decimal = self - self.floor decimalStr =(decimal * 10 ** precision).floor.to_s if decimalStr.size < precision decimalStr += "0" *(precision - decimalStr.size) end if padDecimals || decimalStr =~ /[123456789]/ str += "." str += decimalStr end end str end |