racket - Scheme filter with a function as a predicate -


I'm sorry if I'm opening a lot of scheme questions, but for some time it's been annoying me.

So I have a function (called pair-scoreer) which takes a list of pair of stars in the form of parameters and according to how close the score is (2 points for the same character, -1 For example, for the example 

  (pair-scorer '("AAA" "BBB") ("CCC" "CCC") ("AAA"   
 return  '(- 3 6 3)   
 I also have the maximum function that will take the maximum number in this list of numbers  
 like  
  (max-list '(-3,63))> 6   
 Now here's the problem I added to the string To create a list, there is a need to create a filter, that is, i.e.  ("aaa" "bbb") ("ccc" "ccc") ("AAA" "AAB") and  only pair Or couples) who generate maximum value when run through scoring function Areas are.  
 How do I apply this filter? I hope I was quite clear.  
  
 
 
 I think you have a  score  function that is a single pair Try it out:  
  (argmax score '("aaa" "bbb") (" ccc "" ccc "(" AAA "" AAB ")))   
 The trick here was used, which receives a function applied to each element in the list and Finds that element for which the function returns a maximum value.  
 Keep in mind that  argmax  will return the same element, even if there are many with the same maximum value, if it is a problem then you have to type your function, but the existing processes In context and it is easy to use:   
 will return a list with the above elements which is the highest score. If there is only one, then the list will contain an element.

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