C++.Coding.Standards.1918.Rules.Guidelines [Electronic resources]

Discussion

The more context you can give a function, the better the chances that it can do something useful with the information. In particular, when you call a single function and pass it a pair of iterators

first and

last that delimit a range, it can perform optimizations based on knowing the number of objects that are going to be added, which it obtains by computing

distance(first,last) .

The same applies to "repeat

n times" operations, such as the

vector constructor that takes a repeat count and a value.