C++ Primer, Fifth Edition

10.5.3. Algorithm Naming Conventions

Separate from the parameter conventions, the algorithms also conform to a set of naming and overload conventions. These conventions deal with how we supply an operation to use in place of the default < or == operator and with whether the algorithm writes to its input sequence or to a separate destination.

Some Algorithms Use Overloading to Pass a Predicate

Algorithms that take a predicate to use in place of the < or == operator, and that do not take other arguments, typically are overloaded. One version of the function uses the element type’s operator to compare elements; the second takes an extra parameter ...