Class: Numeric
- Inherits:
-
Object
- Object
- Numeric
- Defined in:
- lib/utilities.rb
Instance Method Summary collapse
-
#degrees ⇒ Object
Convert to degrees.
-
#hour_to_string(delimiter = ':') ⇒ Object
Transform self to a string formatted time (HH:MM) Ex: 14.5 => “14:30“.
-
#percentage_of(n, t = 100) ⇒ Object
(also: #percent_of)
Calculate the percentage of self on n.
-
#rank(min, max) ⇒ Object
Calculate the rank of self based on provided min and max.
-
#sqrt ⇒ Object
Return the square root of self.
-
#square ⇒ Object
Return the square of self.
-
#to_decimals(decimals = 2) ⇒ Object
Transforms self to a string with decimals decimals.
Instance Method Details
#degrees ⇒ Object
Convert to degrees
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# File 'lib/utilities.rb', line 55 def degrees self * Math::PI / 180 end |
#hour_to_string(delimiter = ':') ⇒ Object
Transform self to a string formatted time (HH:MM) Ex: 14.5 => “14:30“
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# File 'lib/utilities.rb', line 65 def hour_to_string delimiter = ':' hour = self.to_i min = "%02d" % (self.abs * 60 % 60).to_i "#{hour}#{delimiter}#{min}" end |
#percentage_of(n, t = 100) ⇒ Object Also known as: percent_of
Calculate the percentage of self on n
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# File 'lib/utilities.rb', line 88 def percentage_of n, t = 100 n == 0 ? 0.0 : self / n.to_f * t end |
#rank(min, max) ⇒ Object
Calculate the rank of self based on provided min and max
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# File 'lib/utilities.rb', line 77 def rank min, max s, min, max = self.to_f, min.to_f, max.to_f min == max ? 0.0 : (s - min) / (max - min) end |
#sqrt ⇒ Object
Return the square root of self
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# File 'lib/utilities.rb', line 72 def sqrt Math.sqrt(self) end |
#square ⇒ Object
Return the square of self
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# File 'lib/utilities.rb', line 60 def square self * self end |
#to_decimals(decimals = 2) ⇒ Object
Transforms self to a string with decimals decimals
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# File 'lib/utilities.rb', line 83 def to_decimals decimals = 2 "%.#{decimals}f" % self end |