assertions.h
No OneTemporary
Actions

Subscribers

None

File Metadata

	/**
	\file
	\copyright Copyright 2017. Tom de Geus. All rights reserved.
	\license This project is released under the GNU Public License (GPLv3).
	*/

	#ifndef GOOSEFEM_ASSERTIONS_H
	#define GOOSEFEM_ASSERTIONS_H

	#include "config.h"

	namespace GooseFEM {

	/**
	Returns true is a list is unique (has not duplicate items).
	\param arg Array-like.
	\return `true` if `arg` is unique.
	*/
	template <class T>
	inline bool is_unique(const T& arg)
	{
	array_type::tensor<typename T::value_type, 1> flat = xt::ravel(arg);
	array_type::tensor<typename T::value_type, 1> unique = xt::unique(flat);
	array_type::tensor<typename T::value_type, 1> sorted = xt::sort(flat);

	if (unique.size() != sorted.size()) {
	return false;
	}

	return xt::all(xt::equal(unique, sorted));
	}

	} // namespace GooseFEM

	#endif