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sort list Dependence on another list


hosneyalaa

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HI Everyone ,  Question please

How can an  sort   as in the example?
I have a list

(setq lst '(("dwgmodels.com" "10006" 1 "") ("dwgmodels.com" "10005" 10 "") ("dwgmodels.com" "10004" 7 "") ("dwgmodels.com" "10003" 3 "") ("dwgmodels.com" "10002" 4 "") ("dwgmodels.com" "10001" 4 "")))

And another list

(setq dsd '(10008 10006 10002	10001	10005 10007	10003	10004) )

 

I want  SORT  lst LIST    Dependence on  dsd LIST

the result

(setq lstret '(("dwgmodels.com" "10006" 1 "") ("dwgmodels.com" "10002" 4 "") ("dwgmodels.com" "10001" 4 "") ("dwgmodels.com" "10005" 10 "") ("dwgmodels.com" "10003" 3 "") ("dwgmodels.com" "10004" 7 "")))

 

 

 

Thanks in advance

 

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Here's one possible way -

(vl-sort lst '(lambda ( a b ) (< (vl-position (atoi (cadr a)) dsd) (vl-position (atoi (cadr b)) dsd))))

 

Or, perhaps faster:

(mapcar '(lambda ( n ) (nth n lst)) (vl-sort-i (mapcar '(lambda ( x ) (vl-position (atoi (cadr x)) dsd)) lst) '<))

 

Or, if you only want members that are present in dsd, you could use -

(vl-remove nil (mapcar '(lambda ( x ) (car (vl-member-if '(lambda ( y ) (= x (atoi (cadr y)))) lst))) dsd))

 

Edited by Lee Mac
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