---
name: "index_set"
section: "7rheolef"
platform: "linux"
package: "librheolef-dev"
version: "7.0-2+b1"
release: "Debian 10 (Buster)"
platforms: ["linux"]
url: "https://new.carta.tech/index_set"
---

# index\_set(7rheolef)

a set of indexes (rheolef-7.0)

## NAME

index\_set - a set of indexes (rheolef-7.0)

## SYNOPSIS

A class for: l = {1,3,...9} i.e. a wrapper for STL **set\<size\_t\>** with some assignment operators, such as l1 += l2. This class is suitable for use with the **disarray\<T\>** class, as **disarray\<index\_set\>** (see disarray(2)).

## IMPLEMENTATION

```
class index_set : public std::set<std::size_t> {
public:
// typedefs:
  typedef std::set<std::size_t>    base;
  typedef std::size_t              value_type;
  typedef std::size_t              size_type;
// allocators:
  index_set ();
  index_set (const index_set& x);
  index_set& operator= (const index_set& x);
  template <int N>
  index_set& operator= (size_type x[N]);
  void clear ();
// basic algebra:
  void       insert     (size_type dis_i);    // a := a union {dis_i}
  index_set& operator+= (size_type dis_i);    // idem
  index_set& operator+= (const index_set& b); // a := a union b
  // a := a union b
  void inplace_union        (const index_set& b);
  void inplace_intersection (const index_set& b);
  // c := a union b
  friend void set_union        (const index_set& a, const index_set& b, index_set& c);
  friend void set_intersection (const index_set& a, const index_set& b, index_set& c);
// io:
  friend std::istream& operator>> (std::istream& is, index_set& x);
  friend std::ostream& operator<< (std::ostream& os, const index_set& x);
// boost mpi:
#ifdef _RHEOLEF_INDEX_SET_H
#ifdef _RHEOLEF_HAVE_MPI
  template <class Archive>
  void serialize (Archive& ar, const unsigned int version);
#endif // _RHEOLEF_HAVE_MPI
#endif // _RHEOLEF_INDEX_SET_H
};

```

## SEE ALSO

disarray(2)

## COPYRIGHT

Copyright (C) 2000-2018 Pierre Saramito \<Pierre.Saramito@imag.fr\> GPLv3+: GNU GPL version 3 or later \<http://gnu.org/licenses/gpl.html\>. This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.