C++ concepts: InputIterator
From cppreference.com
An InputIterator is an Iterator that can read from the pointed-to element.
[edit] Requirements
In addition to the above requirements, for a type It to be an InputIterator, instances a and b of It must:
| Expression | Return | Equivalent expression | Notes |
|---|---|---|---|
| a != b | bool | !(a == b) | |
| *a | value_type | If a == b equivalent to *b
|
|
| a->m | (*a).m | ||
| ++a | It& | After this, copies of a may be invalidated
|
|
| a++ | ++a | ||
| *a++ | value_type |
value_type t = *a; ++a; |