我试图找到确定给定整数在哪个范围内的最佳方法.
以此哈希为例:
以此哈希为例:
score_levels = { 1 => {'name' => 'Beginner','range' => 0..50},2 => {'name' => 'Intermediate','range' => 51..70},3 => {'name' => 'Pro','range' => 71..85},4 => {'name' => 'Expert','range' => 86..96},5 => {'name' => 'Master','range' => 97..100} }
我希望在得分时运行不同的逻辑,例如:
case score when score_levels[1]['range'] level_counters[1] += 1 when score_levels[2]['range'] level_counters[2] += 1 when score_levels[3]['range'] level_counters[3] += 1 end
有更通用的方法吗?
也许是这种精神的东西:
score_levels.each |key,val| {if val['range'].member?(score) then level_counters[key] += 1 }
谢谢!
解决方法
就在这里.
level_counters[score_levels.find{|_,h| h["range"].include?(score)}.first] += 1