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Assignment 1 Review (cont)

Storing in canonical form (e.g. all lower-case), and pre-split
  • simplifies query-time operations like email_cmp()
Having a generic email_cmp() function
  • simplifies rest of code, especially operator functions
Accesing data in var-length pre-split struct: 

struct Email *ep;
ep = (struct Email *)PG_GETARG_POINTER(0);
char *local = &(ep->addr[0]);
char *domain = &(ep->addr[ep->dom0]);