32651: Fehler beim Vergleich von Float mit Float fehlgeschlagen ruby ​​

Question

Ich bin neu bei Schienen, und ich bekomme einen Fehler und ich kann nicht finden, wo das Problem ist. Hier ist das Protokoll:

[32651:ERROR] 2012-10-09 13:46:52 :: comparison of Float with Float failed 
[32651:ERROR] 2012-10-09 13:46:52 :: /home/sunny/backend/lib/analytics/lifetime.rb:45:in `each' 
/home/sunny/backend/lib/analytics/lifetime.rb:45:in `max' 
/home/sunny/backend/lib/analytics/lifetime.rb:45:in `max_growth' 
/home/sunny/backend/lib/analytics/lifetime.rb:15:in `run' 
/home/sunny/backend/lib/analytics/post_analytics.rb:102:in `lifetime' 
/home/sunny/backend/lib/analytics/post_analytics.rb:27:in `run`run' 
lib/endpoints/posts/index.rb:65:in `block in response' 
lib/endpoints/posts/index.rb:62:in `each' 
lib/endpoints/posts/index.rb:62:in `response' 
/usr/local/lib/ruby/gems/1.9.1/gems/goliath-1.0.0.beta.1/lib/goliath/api.rb:163:in `call' 
/usr/local/lib/ruby/gems/1.9.1/gems/goliath-1.0.0.beta.1/lib/goliath/rack/validation/required_param.rb:43:in `call' 
/usr/local/lib/ruby/gems/1.9.1/gems/goliath-1.0.0.beta.1/lib/goliath/rack/params.rb:61:in `block in call' 
/usr/local/lib/ruby/gems/1.9.1/gems/goliath-1.0.0.beta.1/lib/goliath/rack/validator.rb:40:in `safely' 
/usr/local/lib/ruby/gems/1.9.1/gems/goliath-1.0.0.beta.1/lib/goliath/rack/params.rb:59:in `call' 
/usr/local/lib/ruby/gems/1.9.1/gems/goliath-1.0.0.beta.1/lib/goliath/rack/async_middleware.rb:73:in `call' 
/usr/local/lib/ruby/gems/1.9.1/gems/rack-1.4.1/lib/rack/content_length.rb:14:in `call' 
/usr/local/lib/ruby/gems/1.9.1/gems/async-rack-0.5.1/lib/async_rack/async_callback.rb:114:in `call' 
/usr/local/lib/ruby/gems/1.9.1/gems/async-rack-0.5.1/lib/async_rack/async_callback.rb:91:in `block in new' 
/usr/local/lib/ruby/gems/1.9.1/gems/goliath-1.0.0.beta.1/lib/goliath/request.rb:163:in `call' 
/usr/local/lib/ruby/gems/1.9.1/gems/goliath-1.0.0.beta.1/lib/goliath/request.rb:163:in `block in process' 

Jedes Mal, wenn ich in die Datei gehen und finden Sie die Zeile, gibt es keine each, und ich kann nicht verstehen, wo das Problem ist. Kann jemand helfen? Mehr als eine Lösung, ich möchte das Problem verstehen. Hier

ist die Datei:

class Lifetime 
    attr_reader :values 

    GROWTH_CUT_OFF = 0.10 

    def initialize(engaged_users_values) 
    @values = engaged_users_values 
    end 

    def run 
    growths  = growth(values) 

    return [0] if growths.uniq.first == 0 || growths.empty? 

    max_growth = max_growth(growths) 
    dead_growth = least_growth(growths, max_growth) 

    time_diff = time_diff(values.last['end_time'], 
          values.first['end_time']) 
    return [time_diff] unless dead_growth 

    dead_loc  = growths.index(dead_growth) 
    dead_value = values[dead_loc] 
    lifetime(values.first, dead_value) 
    end 

    def time_diff(last, first) 
    in_minutes(parse_time(last)-parse_time(first)) 
    end 

    def parse_time(time) 
    DateTime.parse(time) 
    end 

    def growth(values) 
    values.each_cons(2).map do |one, two| 
     one_value = one['value'].to_f 
     two_value = two['value'] 

     ((two_value-one_value)/(one_value)*100).round(2) 
    end 
    end 

    def max_growth(growths) 
    growths.max 
    end 

    def least_growth(growths, max_growth) 
    growth_cut = growth_cut(max_growth) 
    growths.select {|g| g <= growth_cut}.first 
    end 

    def growth_cut(max_growth) 
    max_growth*GROWTH_CUT_OFF 
    end 

    def lifetime(first_value, last_value) 
    first = parse_time(first_value['end_time']) 
    last = parse_time(last_value['end_time']) 

    result = last-first 
    [in_minutes(result)] 
    end 

    def in_minutes(time) 
    time.to_f*24*60 
    end 
end 

Answer 1

Wenn eine der beiden Floats NaN ist dann diese Meldung. Also, verhindere den NaN-Fall.

Wir bieten Ihnen weitere Informationen geben, wenn Sie den genauen Code des Fehlers (der max_growth Methode)