Class: SPCore::Limiters

Inherits:
Object
  • Object
show all
Defined in:
lib/spcore/util/limiters.rb

Overview

the given limits.

Class Method Summary collapse

Class Method Details

.make_enum_limiter(good_values) ⇒ Object

make a limiter that limits values to a set of good values. Given also the current value, it either returns the input value if it’s included in the set of good values, or it returns the current value.



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# File 'lib/spcore/util/limiters.rb', line 50

def self.make_enum_limiter good_values
  return lambda do |input, current|
    if good_values.include?(input)
      return input
    else
      return current
    end
  end
end

.make_lower_limiter(limit) ⇒ Object

make a limiter that keeps values at or above the given lower limit.



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# File 'lib/spcore/util/limiters.rb', line 37

def self.make_lower_limiter limit
  return lambda do |input|
    if input < limit
      return limit
    else
      return input
    end
  end
end

.make_no_limiter ⇒ Object

make a limiter that actually doesn’t limit at all.



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# File 'lib/spcore/util/limiters.rb', line 6

def self.make_no_limiter
  return lambda do |input|
    return input
  end
end

.make_range_limiter(range) ⇒ Object

make a limiter that keeps values within the given range.



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# File 'lib/spcore/util/limiters.rb', line 13

def self.make_range_limiter range
  return lambda do |input|
    if input < range.first
      return range.first
    elsif input > range.last
      return range.last
    else
      return input
    end
  end
end

.make_upper_limiter(limit) ⇒ Object

make a limiter that keeps values at or below the given upper limit.



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# File 'lib/spcore/util/limiters.rb', line 26

def self.make_upper_limiter limit
  return lambda do |input|
    if input > limit
      return limit
    else
      return input
    end
  end
end