One caution must be observed with Strings vs. Objects:
Suppose we had a function member which tests membership:
static boolean member(int sought, IntList L){while( !isEmpty(L) ){if( sought == first(L) )return true; // sought is foundL = rest(L);}return false; // sought never found}
This definition would not work well for Strings:
static boolean member(String sought, StringList L){while( !isEmpty(L) ){if( sought == first(L) )return true; // sought is foundL = rest(L);}return false; // sought never found}
Why not?
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