< cpp‎ | experimental‎ | ranges
Technical specifications
Filesystem library (filesystem TS)
Library fundamentals (library fundamentals TS)
Library fundamentals 2 (library fundamentals 2 TS)
Extensions for parallelism (parallelism TS)
Extensions for parallelism 2 (parallelism TS v2)
Extensions for concurrency (concurrency TS)
Concepts (concepts TS)
Ranges (ranges TS)
Special mathematical functions (special math TR)
Iterators library
Iterator concepts
Indirect callable concepts
Common algorithm requirements
Concept utilities
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Stream iterators
template < class I1, class I2, class Out, class R = ranges::less<>,

           class P1 = ranges::identity, class P2 = ranges::identity >
concept bool Mergeable =
  InputIterator<I1> &&
  InputIterator<I2> &&
  WeaklyIncrementable<Out> &&
  IndirectlyCopyable<I1, Out> &&
  IndirectlyCopyable<I2, Out> &&

  IndirectStrictWeakOrder<R, ranges::projected<I1, P1>, ranges::projected<I2, P2>>;
(ranges TS)

The Mergeable concept specifies the common requirements of algorithms that merge sorted sequences into an output sequence by copying the elements (for example, ranges::merge).