Module: Ish

Defined in:
lib/ish.rb,
lib/ish/time.rb,
lib/ish/fixnum.rb,
lib/ish/number.rb,
lib/ish/version.rb

Defined Under Namespace

Modules: Number, Time

Constant Summary collapse

VERSION = 
"0.0.1"

Class Method Summary collapse

Class Method Details

.default_precision ⇒ Object 



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# File 'lib/ish.rb', line 8

def self.default_precision
  @default_precision ||= 0.05
end

.default_precision=(val) ⇒ Object 



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# File 'lib/ish.rb', line 12

def self.default_precision=(val)
  @default_precision = val
end

.default_time_offset_seconds ⇒ Object

5 min = 300 sec



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# File 'lib/ish.rb', line 17

def self.default_time_offset_seconds
  @default_time_offset_seconds ||= 300 
end

.default_time_offset_seconds=(val) ⇒ Object 



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# File 'lib/ish.rb', line 21

def self.default_time_offset_seconds=(val)
  @default_time_offset_seconds = val
end

.fuzzify(num, opts = {}) ⇒ Object 



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# File 'lib/ish.rb', line 25

def self.fuzzify(num, opts={})
  raise "argument must be a number!" if !num.respond_to?(:abs)

  offset = offset_from_opts(num, opts)

  # min offset for fixnum is 1
  offset = 1 if num.is_a?(Fixnum) && offset.abs < 1

  rand_offset = if num.is_a? Fixnum
    rand_integer_offset(offset)
  else
    rand_float_offset(offset)
  end

  result = num + rand_offset

  # Fixnum in, fixnum out, aka FIFO
  if num.is_a? Fixnum
    result.to_i 
  else
    result
  end
end

.fuzzify_time(time, opts = {}) ⇒ Object 



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# File 'lib/ish.rb', line 49

def self.fuzzify_time(time, opts={})
  raise 'argument must be a time!' if !time.is_a? Time
  offset = time_offset_from_opts(opts)
  rand_offset = rand_integer_offset(offset)
  time + rand_offset
end

.rand_float_offset(offset) ⇒ Object 



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# File 'lib/ish.rb', line 63

def self.rand_float_offset(offset)
  term = offset * rand # rand is between 0.0 and 1.0
  term *= -1 if rand(2) == 0 # minus half the time
  term
end

.rand_integer_offset(offset) ⇒ Object 



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# File 'lib/ish.rb', line 56

def self.rand_integer_offset(offset)
  range = offset + 1 # because rand(1) only returns 0
  term = rand(range) 
  term *= -1 if rand(2) == 0 # minus half the time
  term
end