This is from Charles Dickens's Little Dorrit, Chapter 16:
The expressionless uniform twenty houses, all to be knocked at and rung at in the same form, all approachable by the same dull steps, all fended off by the same pattern of railing, all with the same impracticable fire-escapes, the same inconvenient fixtures in their heads, and everything without exception to be taken at a high valuation—who has not dined with these?
What does the "who has not dined with these?" mean?