Named arguments in C++
We have seen how collecting logically related values into aggregate objects gives us a side benefit; we can pass these values to functions and access them by name instead of by their order in a long list. The key is logically related, though; aggregating values for no reason other than they happen to be used together in one function call creates unnecessary objects with names we would rather not have to invent. We need a way to create temporary aggregates, preferably without explicit names or declarations. We have a solution to this problem, and had it for a long time in C++; all it needs is a fresh look from a different perspective, which we are about to take now.
Method chaining
Method chaining is a borrowed C++ technique; it originates in Smalltalk. Its main purpose is to eliminate unnecessary local variables. You have used method chaining already, although you may not have realized it. Consider this code that you have probably written many times:
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