condition for structure class

Let's say:

A : 4x1 structure class
A= Field1 :[1000x1 double],
   Field2 : [2x1 double], 
   Field3 : [5x1 double],
   Field4 : [1x1 double]

A= Field1 : [1;2;3...;1000],
   Field2 : [99;11], 
   Field3 : [44;11;33;88;66],
   Field4 : [77]

Question: I wanna implement the condition as follow:

    If ......[the length of each field in structure A < 5]......

          ........do.....s.thing.....

       else

    end

How can I write the condition :[the length of each field in structure A < 5] ?

Example:

length of field1= 1000

length of field2= 2

length of field3= 5

length of field4= 1

Answer 1

[Walter Roberson]

arrayfun(@(S) all(structfun(@length, S) < 5), A)

[ha ha]

May i ask you one more question related to this? How can i count how many member in each field (count length of each field)?

I hope the result will be like this:

result=[1000;2;5;1];

[Walter Roberson]

arrayfun(@(S) structfun(@length, S), A, 'uniform', 0)

[ha ha]

Thank so much @Walter Roberson