cpp/ranges/chunk view/iterator/iterator

Construct an iterator.

@1@ Default constructor. Value-initializes the underlying :
 * with ,
 * with ,
 * with ,
 * with.

@2@ Conversion from to. Initializes the underlying :
 * with ,
 * with ,
 * with ,
 * with.

@3@ A private constructor which is used by ranges and ranges. This constructor is not accessible to users. Initializes the underlying :
 * with ,
 * with ,
 * with ,
 * with.