C++ concepts: SeedSequence

A seed sequence is an object that produces unsigned integer values i in the range 0 ≤ i < 232
based on a consumed range of integer data.

Requirements

• S is a SeedSequence.
• q is an object of S and r is a potentially constant object of S.
• T is the result_type.
• ib,ie are InputIterators with a value_type of unsigned integer values of at least 32 bits.
• il is an std::initializer_list<T>.
• rb,re are mutable RandomAccessIterators with a value_type of unsigned integer values of at least 32 bits.
• ob is an OutputIterator.

Expression	Type	Notes	Complexity
S::result_type	T	Unsigned integer of at least 32 bits	compile-time
S()		Creates a seed sequence with the same default values as other objects of type S	constant
S(ib,ie)		Creates a seed sequence based on the supplied input bits by [ib,ie)	O(ie-ib)
S(il)		The same as S(il.begin(), il.end())
q.generate(rb,re)	void	Fills [rb,re) with 32-bit quantities depending on the initial supplied values and potential previous calls to generate. If rb == re, it does nothing.	O(re-rb)
r.size()	size_t	The amount of 32-bit integers copied by param.	constant
r.param(ob)	void	Copies 32-bit values to ob that would reproduce the current state of the object if passed to a constructor of S.	O(r.size())

See also

• std::seed_seq