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searching a list of sublists for matching expression

jaleco

Is there a simple way to search a set of sublists for matching expressions and return the list of sublists that have the expression?

I have been trying the following example and only get the full master list of sublists returned:

mylist='(("one" 1) ("two" 2))

myset=setof(list mylist foreach(item setof(obj list stringp(obj)) rexMatchp("one" item)))

==> (("one 1) ("two" 2))

Parents
  • tweeksii

    It looks like you were trying to do something like this:

    setof(list mylist

      destructuringBind((first second) list

        string(first) && rexMatchp("one" first)

      )

    )

    You could also write that this way:

    setof(list mylist

      stringp(car(list)) && rexMatchp("one" car(list))

    )

  • jaleco
    in reply to tweeksii

    thanks so much for your reply, great examples!

    I'm dealing with sublists that are a little less structured than my simple example, and I should have made the example strings longer.

    My sublist fields may vary, the number of field that matches the string may vary, and the string is a partial match.

    Presuming a more complex list/sublist and string search, this seems to work ok :

    foreach(list mylist foreach(item list if(stringp(item) && rexMatchp("match_this" item) then mynewlist=cons(list mynewlist))))

    (Of course, the newlist variable has to be initialized first)

Reply
  • jaleco
    in reply to tweeksii

    thanks so much for your reply, great examples!

    I'm dealing with sublists that are a little less structured than my simple example, and I should have made the example strings longer.

    My sublist fields may vary, the number of field that matches the string may vary, and the string is a partial match.

    Presuming a more complex list/sublist and string search, this seems to work ok :

    foreach(list mylist foreach(item list if(stringp(item) && rexMatchp("match_this" item) then mynewlist=cons(list mynewlist))))

    (Of course, the newlist variable has to be initialized first)

Children
  • tweeksii
    in reply to jaleco

    thanks so much for your reply, great examples!

    I'm dealing with sublists that are a little less structured than my simple example, and I should have made the example strings longer.

    My sublist fields may vary, the number of field that matches the string may vary, and the string is a partial match.

    I that case, I suggest the following:

    > mylist='(("one" 1) ("two" 2) (3 "buckle") (_ 4 "my") (_ _ 5 "shoe"))
    (("one" 1)
     ("two" 2)
     (3 "buckle")
     (_ 4 "my")
     (_ _ 5 "shoe")
    )
    > setof(list mylist rexMatchList("e" setof(l list stringp(l))))
    (("one" 1)
     (3 "buckle")
     (_ _ 5 "shoe")
    )

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